Ok so... supercharger time

[WPG98XJ]

So what do I need to do as far as fuel goes so I don't blow my engine up.

It should arrive in about a week and a half or so, and figure I might as well ebay the rest of the stuff I need while I'm waiting for it.

Was thinking an FMU where as the boost goes up it blocks the return line a little thereby increasing fuel pressure. I was also reading that this is a bandaid and don't do it..

I'm not looking for 500hp.. I wanna run like 5 or 6psi. I don't want some rediculas setup. And really shouldn't need one running lower boost.

So what do I need to do to not lean this pig out?

[WPG98XJ]

I will post pics of s/c tommorow morning after auction closes... don't want someone else deciding to man up and get er done and outbid me lol..

[streetpirate]

m90?

walboro high flow fuel pump, wideband o2, map adjuster, and a rising rate fmu should be enough to get you by. dont skimp on the wideband, you really do need it to tune the motor correctly. the last thing you want is to detonate and drop a piston under WOT and boost.


the right way to do it, would be witht he wideband and an aftermarket fuel controller. I have a megasquirt ecu to control fuel and spark, but its an involved (massively) install. i dont know if 5-6lbs would require a way to pull timing?

[WPG98XJ]

If you don't mind:

1. Ok so high flow fuel pump intank or inline? what specs would be good? Don't wanna get too big and explode my injectors or something dumb..


2. http://cgi.ebay.com/ebaymotors/PLX-DM-5-SM-AFR-Wideband-Air-Fuel-Ratio-O2-Sensor-kit_W0QQcmdZViewItemQQcategoryZ107063QQihZ006QQite mZ160184852166QQrdZ1QQsspagenameZWDVW
something like this?


3. fmu's have a few general ratios.... now, from what I've been able to read my 98 runs allready @ 49 or so psi for fuel pressure... running a 3:1 fmu would add an extra 15psi of f-psi this sufficient? or should I got with a 6:1 doing 30 f-psi more

[streetpirate]

that wideband will work, but ive heard great things about the innovate brand ones, http://www.innovatemotorsports.com/

http://www.titanmotorsports.com/lmdiairame.html

it does really good datalogging too


the fuel pump will replace the in tank pump, get the 255lph, you wont blow anything with a regulator and a return line.
i think this would eb the right one
http://www.expressfuelpumps.com/jeep-cherokee-walbro-fuel-pump-19941996-p-3641.html


adjustable rising rate fmu would be nice, like this but not this one $$$
http://www.superchargeronline.com/product_detail.asp?PartNumber=BEG-2027


there is also a threshhold on how much pressure the injectors can handle before they fail IIRC
make sure to get bigger injectors, umm... let see what else...


wait, look up the kenne bell and hesco kits, see what boost they run on a stock 4.0, and see what fmu is included in the kit!

[streetpirate]

so what kind of blower did you get?

[WPG98XJ]

pm sent

[JKMotorsports]

What about an AFC to recurve the MAP range and load up the the fuel injectors more.

Or better yet to use larger injectors say 450cc and recurve using the AFC.

The problem is an AFC advances the timing so a BTM code be used as there is no adjustment on a 4.0l eninge.

[WPG98XJ]

well.. i figure i'll get the fuel pump, and that adjustable fmu. regap my plugs accordingly.. get some better fuel lines and hope for the best.

That should get it somewhere near safe at the boost levels i'm looking for.

And props to you for getting M/S working.. screw that crap lol :D

[WPG98XJ]

oh crap almost forgot last Q of the night...

Does anyone make nice fuel rail for these things? Mine is a 98..

[streetpirate]

shouldnt need an aftermarket fuel rail of any kind,
btw, im looking in to getting a junkyard computer, desoldering the harness conector, and making an adatper harness to go from the megasquirt controller to the factory ecm harness. if i can do it with minimal or no rewiring underhood, i could make plug and play megasquirts for xj's.

[WPG98XJ]

Just wanted a nicer one. Maybe I'll take mine down to local machine shop and get a quote to get a nice one made up.

then you best be getting on that lol... I'm sure a there would be a few takers for sure.

[WPG98XJ]

Won the auction, paid now time to await delivery.

http://www.chemicaldreams.net/jeep/EatonM62.jpg

The Eaton Model 62 supercharger was engineered for 2.0L to 4.0L passenger cars and light truck engines. It was designed as a compact, flexible supercharger for increased power without adversely affecting fuel economy. The M62 has proven to be suitable for other engine sizes depending on overall system requirements.

Most installations see a realistic 40% plus increase in power output.
Eaton Superchargers will work effectively in any orientation (Flat, upside down, on edge).
Different length drives are available, giving the custom installer flexibility in the placement of the supercharger.
The M62 is available for counter rotating engines (2 Piece Drive).
A Bypass Valve is included with every supercharger, two different Bypass Valves are available, one that mounts directly on the intake port, and one for remote mount.

Whatever... we'll see how it goes once I get it and take it all down to my buddies custom shop.

[JKMotorsports]

Megasquirt would definitly be the way to go. I have never worked with the unit it's self, but normally tune Standalone. I have seen it in action as my College Prof was one of the developers. Roger Enns. Gained a wealth of knowledge from him about the unit.

As far as I know it is still better to control the spark some otherway if you go with V2.

[WPG98XJ]

DIY EFI sounds/looks intimidating and scary knowing my luck my damn engine would start running in the opposite rotation...then what. I'll have 5 speeds in reverse...

"hey does the supercharger make it go fast?"
"yeah... backwards"

no I'll pass..

besides.. i forsee large ammounts of brokeness and severe simptoms of empty bank/pocket syndrome in my somewhat imediate future.

[streetpirate]

just got my m90, sitting on my couch as we speak... well, you know what i mean

[seanyb505]

just got my m90, sitting on my couch as we speak... well, you know what i mean
Are you putting yours on the stock 4.0 block or are you stroking it? Im counting on you to pave the way for when i put mine on (it sits underneath my bed as of now). Motorcycles, finding a place to live among other things are taking what money i can get right now.

[streetpirate]

http://i33.photobucket.com/albums/d75/streetpirate2/DSCN1573.jpg
http://i33.photobucket.com/albums/d75/streetpirate2/DSCN1575.jpg
http://i33.photobucket.com/albums/d75/streetpirate2/DSCN1576.jpg

i'll be working on the plug-n-play megasquirt harness and the blower install this winter. i wonder how many psi the stocker will take...

last two pictures, my 70mm 5.0 mustang tb isnt going to be a bolt on after all


edit, ive got he 86-93 tb and the 94-95 is a bolt on, so im in the market to trade tb's i guess

[WPG98XJ]

damn you for getting yours first.. why you little.......


http://kingofpeace.org/images/bartandhomer.gif


although, today I recieved tracking #.. so glad the company is on it pretty quick. Hopefully in a week or so. We'll see :D

[streetpirate]

if that got your panties in a twist, this will rock your socks off
its in like new condition, no shaft play,
$100

[WPG98XJ]

not bad, I'm hoping the smaller size of mine will help me deal with the cost of it... plus its from a rebuilding company so it should be good for a while. Shouldn't have to worry about seals or bearings or ect..ect...

[seanyb505]

Ha! Ive got all you guys beat
http://i161.photobucket.com/albums/t217/seanyb505/Jeep/Picture001-1.jpg







Are you ready?

Came out of a flipped Supercoupe, blower in good condition and the engine was running before the car flipped......$67.35 USD I had no intention of getting one when I saw it, but 15 minutes later, it was mine. Ive had it for like 8 months or something.

[WPG98XJ]

yeah but i live in canada, where the commercial world, as well as the world countries feel because there is some sort of invisible line (border) seperating Canada/USA. They must charge us like 30-35% and sometimes 50% more on some stuff.

So I but all my stuff from the US.. and most places that have good prices won't ship to canada... so I'm stuck with getting whatever I can.

But I think we both have you beat in the sense that one day we will actually install them hehehe..... :laugh2:


edit: and i'm still pissed 33" tires here are like $1500....

[streetpirate]

what? sean will install his as soon as we can tell him how to do it :)
its hard going into the uncharted territory of putting junkyard blowers in vehicles that were never designed for them.

[WPG98XJ]

pffft... man up :)







j/k

[seanyb505]

what? sean will install his as soon as we can tell him how to do it :)
its hard going into the uncharted territory of putting junkyard blowers in vehicles that were never designed for them.
Oh money, where art thou money?
lol I would if i could. When I get the money to do it then i will get down to business. Until then, if you get it in before me then make my life easier and tell me how to do it:laugh3:

[WPG98XJ]

i'm just buggin' ya... i talk smack because I have a frien who runs a shop.. so it'll be a little easier for me...

[streetpirate]

Yeah, and buy one of my exclusive plug and play pre-tuned megasquirt kits.

[WPG98XJ]

build it... and they will come...

[seanyb505]

I know I will

[wolfpackjeeper]

I am gettign ready to start on a turbo setup on my stroker, is there an esy way to pull timing on a 91? finding someone to mess with my computer has bee impossible

[WPG98XJ]

I'll tell you if you make my supercharger get here sooner... ;)

[j33pownr]

Wolfpack, You need to rotate the distributor to advance/retard the timing. The stock distributor only fits one way (with no movement) so you have to grind the ears on the indexing tab a little so you get some movement.


edit: For messing with the computer it looks like MegaSquirt (previously mentioned) or Split Second FTC I are about the easiest to get your hands on.

[wolfpackjeeper]

yea, I figured I would be messing with the distributor

[Gramps]

Boy I tell you what. I dropped one of them fandangled M90s on my scooter and you wouldn't believe the kind of power I make. I run a standard fuel line. I got some alcohol injection to cool that hot air down. I been fabricating an intercooler for her down in the retirement home workshop. I run a 2.8 pulley right now. I make so much boost that if I just touch my throttle a bit I burn my tires off into the ground. They had a talent show at the retirement home the other day and I just told them to pour me a water box. I lit em up good for everyone, I filled that place full of smoke and then I ramped my scooter off the stage and proceeded to flex it on a chair. I got all those ladies that night boy.

[streetpirate]

Boy I tell you what. I dropped one of them fandangled M90s on my scooter and you wouldn't believe the kind of power I make. I run a standard fuel line. I got some alcohol injection to cool that hot air down. I been fabricating an intercooler for her down in the retirement home workshop. I run a 2.8 pulley right now. I make so much boost that if I just touch my throttle a bit I burn my tires off into the ground. They had a talent show at the retirement home the other day and I just told them to pour me a water box. I lit em up good for everyone, I filled that place full of smoke and then I ramped my scooter off the stage and proceeded to flex it on a chair. I got all those ladies that night boy.

someday im going to figure out who the hell this is.

[fitbmxseries1]

hhrmmm i have a supercharger off of a bonneville in my garage wonder if that will work? its off a 3.8 so its gotta be about right? eh i probably wouldnt do anything with it though probably sell it off on craigs list in a month lol

[WPG98XJ]

lol why sell it? throw it on your xj...

[streetpirate]

hhrmmm i have a supercharger off of a bonneville in my garage wonder if that will work? its off a 3.8 so its gotta be about right? eh i probably wouldnt do anything with it though probably sell it off on craigs list in a month lol

the GM ones are the ones you have to bolt directly to the intake via some crazy custom adaptor, or more likely, a crazy custom intake manifold.

[fitbmxseries1]

yeah i already built a crazy adaptor so i could put it on a 350 tpi engine almost as if it was a "remote" supercharger... like most huge projects like this i lost my intrest when prices on engine managment came up on somthing that may not even work that well on a larger engine. I made aplate for the bottem that adapted into a 3 inch pipe so i could put the supercharger anywhere ( well aslong as i can get the belt on it). didnt get to dealing with the intake end of it but i was going to eliminate all of it so its also just a 3 inch intake pipe. then i would run a exteral blow off valve some where before the intake..... dont know how well all this would have worked but i got the supercharger for free and once i got the to point of where i had to start cutting the supercharger i stopped because if i wasnt forsure gunna use it i didnt want to wreck it.

[fitbmxseries1]

ive just done some looking around alot of people seem to be using the ford sc ones on their cars juse because of ease of use, heres a few pics on other cars hopfully give some ideas on doing one on your jeeps
heres one on a camaro 305 tpi http://www.thirdgen.org/techboard/attachments/power-adder/87725d1108413089-eaton-m90-finally-blowing-c-documents-settings-dave


and heres a insane set up!!! twin superchargers on a thunderbird 302? but check this guys site out Alot of good info and fabrication
http://www.toohighpsi.com/SCTC/Images/sctc3.jpg
heres the link for his site http://www.toohighpsi.com/SCTC/sctc.htm

[streetpirate]

yeah i already built a crazy adaptor so i could put it on a 350 tpi engine almost as if it was a "remote" supercharger... like most huge projects like this i lost my intrest when prices on engine managment came up on somthing that may not even work that well on a larger engine. I made aplate for the bottem that adapted into a 3 inch pipe so i could put the supercharger anywhere ( well aslong as i can get the belt on it). didnt get to dealing with the intake end of it but i was going to eliminate all of it so its also just a 3 inch intake pipe. then i would run a exteral blow off valve some where before the intake..... dont know how well all this would have worked but i got the supercharger for free and once i got the to point of where i had to start cutting the supercharger i stopped because if i wasnt forsure gunna use it i didnt want to wreck it.



right on man!

go for it, look at http://www.naxja.org/forum/showthread.php?t=69302

this was the first real info i found on this, good stuff

[fitbmxseries1]

ok lets say i was going to put my supercharger on, whats wrong with an fmu? i have an adustable one already still sitting in its box... only 45$! (thank you craigs list!) or how difficult is it to do a mega squirt system with little knowlage of programming and fine tuning an engine?

[seanyb505]

how difficult is it to do a mega squirt system with little knowlage of programming and fine tuning an engine?
Id say quite difficult considering you have to be familiar with all the fuel/air parameters

[streetpirate]

Most of the difficulty is time and learning. and theres going to be lots of both. the fmu is a bandaid, it should work. you might also have to pull timing with boost, so you are looking at a msd boost refrenceing timing retard, which costs about what the megasquirt does by itself.

[WPG98XJ]

yeah for now thats what i'm doing.... adjustable FMU.. not gonna run much boost so whatever it'll work from everything I have read in the last few weeks.

[streetpirate]

ok, just start out pig rich and tune leaner from there, last thing you need is a hole in a piston

[WPG98XJ]

It came 30 minutes ago :D

Looks like I've got some work to do comming up... bumper...supercharger.. holy crap what am I getting myself into haha


http://www.chemicaldreams.net/jeep/ohyeahbaby.jpg

[seanyb505]

its a fun feeling...like holy crap did i just....yes! I definitely just bought that, and now i have it

[WPG98XJ]

its a fun feeling...like holy crap did i just....yes! I definitely just bought that, and now i have it

haha thats pretty close to what I said..


as we're signing i'm like sweet finally got my supercharger guy's eyes lit up but didn't say anything. As me and the g/f walking back up to apt. I was like "holy $hit I baught a supercharger sweet!"

My g/f just like ... uh huh

edit: haha my ms paint skillz own.

http://www.chemicaldreams.net/jeep/boost.jpg

[fitbmxseries1]

i should look into the mega squirt system. i wanted to use it in my Trans am but now the car is for sale. ive done Prom burning on that car but i had alot of help with that, i think some one needs to make a megasquirt kit for me thats all set up and ready to go. :yelclap: then ill probably put the supercharger on. also with this set up i can use a standard intercooler... that i already have. :shhh:

[streetpirate]

yeah, im working on the megasquirt over this winter, may be able to make a plug and play setup for pre-91 jeeps

[fitbmxseries1]

yeah, im working on the megasquirt over this winter, may be able to make a plug and play setup for pre-91 jeeps

how about for the 99 lol :wave:

[1bolt]

I wonder who will be the first to actually have their setup running...

[BBeach]

I wonder who will be the first to actually have their setup running...
x2, I'll prolly have one done before you guys :wave:

[WPG98XJ]

well my bumper was installed today... next project is supercharger.

I'm going start on friday and hopefully get done before xmas.

[seanyb505]

How are you mounting it? Brackets, belt, plumbing etc....

[WPG98XJ]

carefully....... ;)

[streetpirate]

How are you mounting it? Brackets, belt, plumbing etc....

hooker spit and duct tape

[fitbmxseries1]

how much is this hooker spit?

anyways id do this if every one else finished theirs so i can copy and learn from mistakes lol.

and brackets belts and plumbing... easy stuff once you solve every other issue.

[streetpirate]

Yeah, fuel and spark is the fun part

[WPG98XJ]

ok so I'm gonna remove the air box... mount the SC on its side cause its crazy narrow as you can see.

Blue is inlet: running out the back along side to front.
Red is out: Running from side up and accross top to manifold.
Pink is belt: Just going to custom order like 3 belts to the size I'll need.
Yellow is filter.

I have 10 places to bolt into the SC. So mounting is gonna be what looks best since I think I'll have quite a few places/options.http://www.chemicaldreams.net/jeep/fitting.jpg

[WPG98XJ]

Yeah, fuel and spark is the fun part

You keep saying that... I don't think it'll be so tough. :greensmok

[streetpirate]

You keep saying that... I don't think it'll be so tough. :greensmok

yeah, well you didnt spend all weekend reading about how stupid the stock ignition design is! I'm starting to think im gonna throw my distributor in the garbage and just run without one :looney:

[BBeach]

How are you going to mount that thing? You can't hook it to the intake manifold, you'd need some sort of supports coming from there the stock airbox is connected. And even then picture the stresses on those supports, you dont want much movement at all. If its suspended in the air, theres deff going to be some forces on those supports.

[streetpirate]

dude, but its got like... ten mounting holes

[BBeach]

dude, but its got like... ten mounting holesIf you're inferring for each of them to mount to some sort of metal, you're going to have a damn truss bridge under it with ten bars going to the "frame". :roflmao:

[WPG98XJ]

If you look on the snout, it has a large square block. And on the sides it has 4 major holes for bolting into. (came with bolts too nice).

Mounting it is the least of my worries.

I am concerned about keeping it @ max 5psi reliably. I'm going to be running an FMU so as boost goes up my Fuel Pressure will also go up... So if it isn't a steady blow off or if boost is spikey then that is going to XXXX with my fuel pressure.

The way I see it. If I don't cheap out on a BOV that should take care of that. Also not cheaping out on an FMU will also help with this.

I absolutly refuse to belive that crazyness (codeword for MS) is required to run 4.5 to 5psi on these engines. And to be honest if I get this all set up and that is the case then I'll pull it out, and buy something else to put it on. I'm not going to wire up all this other crap to it. The SC is allready cutting down reliability on the trail all that other stuff is just that one extra thing to go pop as your in the middle of a giant hill climb or the middle of a 50' diameter mud hole.

So I am going the keep it simple route and we'll see how it goes... I'm gonna order my needed parts in the next few days.

[fitbmxseries1]

any one with a welder and some metal and a drill press could fab up a mount that goes off the engine im not conserned with that at all, probably would be the easiest part IMO

[fitbmxseries1]

If you look on the snout, it has a large square block. And on the sides it has 4 major holes for bolting into. (came with bolts too nice).

Mounting it is the least of my worries.

I am concerned about keeping it @ max 5psi reliably. I'm going to be running an FMU so as boost goes up my Fuel Pressure will also go up... So if it isn't a steady blow off or if boost is spikey then that is going to XXXX with my fuel pressure.

The way I see it. If I don't cheap out on a BOV that should take care of that. Also not cheaping out on an FMU will also help with this.

I absolutly refuse to belive that crazyness (codeword for MS) is required to run 4.5 to 5psi on these engines. And to be honest if I get this all set up and that is the case then I'll pull it out, and buy something else to put it on. I'm not going to wire up all this other crap to it. The SC is allready cutting down reliability on the trail all that other stuff is just that one extra thing to go pop as your in the middle of a giant hill climb or the middle of a 50' diameter mud hole.

So I am going the keep it simple route and we'll see how it goes... I'm gonna order my needed parts in the next few days.

what are you going to do for electrical?, and if you have an adjustable FMU you could be able to adjust that back to stock and just disconnect the supercharger if you have an issue with it while on the trails so you can make it back home... right? maybe ... i dont know lol... maybe set it up so you have this option

[1bolt]

Might I introduce you fellows to the Apexi S-AFC II? Here's mine:
http://img243.imageshack.us/img243/2151/picture378ja9.jpg

Ebay $50 dollar buy it now :smoker:they go for $100+ all the time. That and 24 to 30# injectors takes care of fuel...

Prepare for some internet reading on the uses of the APEXI, or if you've got a degree in "Engrish" the Apexi manual will do:
http://www.apexi-usa.com/support_main.asp

Here's one amusing (if you're into Engrish) quote:

◆Knocking
Spontaneous ignition is caused by the heat and pressure of mixed air in the burning
portion of non-combustion gas which is far from the plug and the heat of combustion
chamber wall, so that the gas in the whole combustion chamber generates highpressure
waves momentarily. In this phenomenon, strong metallic noise is output from
the engine unlike car knocking by which the car body becomes jerky, with the result
that the valve is damaged and the piston is seized, thereby giving fatal damage to the
engine.
As countermeasures, fuel adjustment, ignition timing adjustment, compression ratio
adjustment, improvement of intake-side squish area, use of mirror type combustion
room wall, and profile improvement of the exhaust-side cam shaft can be mentioned.
Man :confused: my head hurts now and that's just page 4 of the manual out of 64! Burning portion of non-combustion gas? WTF?

Stock timing should be okay up to 5 or 6 PSI... after that start looking for boost retard. If you've got a stroker, look for boost retard right away. Stock 8.4:1 CR is boost friendly enough... Stroker 9+ CR not so much.

If you're wondering why I have a piggyback fuel controler well I have my own little project in the works.

A couple other thoughts, you guys may want to look at pully idler brackets that bolt to the snout. the more belt you wrap around the SC pully the better... Keep spare belts around too. Remember any flex in your bracketry will result in belts-a-popin. Fun stuff when your alternator and water pump are running off the same belt.

Strokers, count on needing an intercooler or injection (water or methenol), we have higher combustion temps from higher than stock CR (and probably bad "intake side squish area" hah!).

[fitbmxseries1]

well looks like you will HAVE to do a write up... and show us how to do it all so we dont have to do as much research :rof:

[MudDawg]

LOL that reminds me of Honda motorcycle manuals in the 70's....that is called "english as she is written" ...some languages do not literally translate well....non-combustion in this case really means the mixture that should not be combusting at that particular moment....the mixture in the off side (farthest from the plug) is spontaneously ignited causing opposing flame fronts that are out of sinc and are not uniform....(see Quench and or Hot Spots or excessively rich F/A mix).

[WPG98XJ]

Sweet deal. I just looked..... the current ones on there not so cheap ;)
And I just recieved my AWShift so time to buy some buttons/switches.

Maybe on payday hehe

[WPG98XJ]

Hrm looks like they have a new one... the Apexi AFC NEO.
Reading a few reviews...

http://www.importtuner.com/reviews/parts/0701_impp_apexi_super_afc_neo_engine_management/index.html

[BBeach]

Stock timing should be okay up to 5 or 6 PSI... after that start looking for boost retard. If you've got a stroker, look for boost retard right away. Stock 8.4:1 CR is boost friendly enough... Stroker 9+ CR not so much.
$50 is a pretty decent deal, but I thought that stock CR was 8.8:1. I'm not sure what the DCR is, but its more important than the static. Either way, its a little tougher on the stroked folks.

[WPG98XJ]

What is the stock Fuel Pressure? Looked but couldn't find it..

[BBeach]

Its on dino's website. I'll try to find a link.

Injectors

Some of those specs that are hard to find in any workshop manual.

The following is a list of the injectors used on the 4.0L since 1987 along with their rated static flow:

Model Year, ...Part #, ......Colour, .....Fuel Pressure, ...Static Flow,
'87-'90, ........53003956, ...Black, ........39psi, .................18.6lb/hr
'91-'93, ........33007127, ...Brown, .......39psi, .................21.0lb/hr
'94-'95, ........53030343, ...Tan, ...........39psi, .................21.0lb/hr
'96-'99, ........53030778, ...Grey, .........49psi, .................23.2lb/hr
'00-'01, ........04854181, ...Blue tip, .....49psi, .................22.5lb/hr

[1985xjlaredo]

What is the stock Fuel Pressure? Looked but couldn't find it..
I think I remember it being 13lbs at the rail? I could be way way off though.

[WPG98XJ]

Its on dino's website. I'll try to find a link.

yeah I had read that... but I wasn't sure if that was accurate or not. I'd hate to base my fuel system thinking on 1 random page on the internet ;)

I have a 98 as my name implies, so if anyone thinks the specs listed are incorrect please let me know

[streetpirate]

39PSI '87-'95
49PSI '96-01

[1bolt]

LOL that reminds me of Honda motorcycle manuals in the 70's....that is called "english as she is written" ...some languages do not literally translate well....non-combustion in this case really means the mixture that should not be combusting at that particular moment....the mixture in the off side (farthest from the plug) is spontaneously ignited causing opposing flame fronts that are out of sinc and are not uniform....(see Quench and or Hot Spots or excessively rich F/A mix).

Oh yeah I understood it. See where I mention "intake side squish area" in reference to strokers poor quench?) I just thought the Engrish was amusing... "combustion room wall" is still funny...

[1bolt]

$50 is a pretty decent deal, but I thought that stock CR was 8.8:1. I'm not sure what the DCR is, but its more important than the static. Either way, its a little tougher on the stroked folks.

You're probably right 8.4:1 was what I remembered but I don't remember numbers all that well when I'm trying to. Let alone when it's something really trivial like the the stock CR of a 4.0 then all bets are off.

[fitbmxseries1]

i really wouldnt have to worry about retarding it at 6 psi? cause id have every thing i need to build it then. I even think my wastegate is set at 5 psi right now. after seeing alot of people and how they talk about the FMUs i would probably trash the idea of using mine though

[WPG98XJ]

anyone of you 3 guys make any progress?

I swear...if I get hasseld by another person who has a "kit in developement" I'm going to do something stupid. Can't even discuss the subject in a civil manner on the other forum. "You can't do it by yourself you must buy my $5,000 kit in development that will never happen or your jeep will melt". Shut up.

I'm shooting for having everything i'll need mid april basically month and a half. Where you guys at?

[BBeach]

Where you guys at?
Im not one of the 3 but im in debt and I owe my jeep some new tires. :rattle:

[seanyb505]

Gave up, going na stroker...m90 for sale though

[1bolt]

boooo... :smsoap: so how much?

[WPG98XJ]

Its like the forces of evil (probably the evil ford or maybe even toyota forces) are against the utilization of forced induction on the XJ.

Its like the exploders are fighting back from us taking their rear axles and the yotas don't want the competition.

Dont give up..

[JJacobs]

Who was the guy that bought the m90 with the booty-fab looking angle iron bracket? I really liked that bracket. Was that you seanyb505?

[streetpirate]

picking up cdi ignition box to make the megasquirt conversion complete, after that its just a little wiring.... and a little tuning...

[seanyb505]

no it was some other guy. I just dont have the funds and i wont have them anytime soon AT ALL...i need a roof over my head and food and stuff. i had it on craigslist for 200 and only had one idiot call. ill probly relist for 150 or so.

[gradon]

Trade for an axle. . .(j/k)

[streetpirate]

picking up cdi ignition box to make the megasquirt conversion complete, after that its just a little wiring.... and a little tuning...

scratch that, dude changed his mind on selling. im still planning on getting the stock 4.0 running and driving with the m90 by the end of summer.

[seanyb505]

that sucks on the guy

[Dingo509]

I may step up and take someones place. I have a friend that has a M90, although i'm not very sure of the origins at this point, he thinks it's off of a 3.8 SC Ford and claims it only has around 42K on it. Anybody know the life expectancy of the bearings? Anyway I was planning on building a very thin 1/4" or so adapter plate, inverting the blower from the original mounting and bolting it on top of a 99+ manifold. I am well aware that this will not be a bolt on and that extensive mods will be required to the manifold.

I had planned on using a A'PEXi S-AFC controller when i thought about this project originally but the new A'PEXi NEO looks like the way to go now. For Ignition i already have a MSD-6 Offroad box and will look into a MSD boost referencing timing controller. Or just replace the Damn MSD box and go with another brand's ignition controller with boost reference.

Here's the fun part.... The 4.6 Stroker is over half done. I am using the heavy crank and have Custom forged pistons to use with the stock 4.0 rods.

With this mounting atyle i won't be able to run much if anytupe of intercooler so i may do nothing or end up using a water/alcohol injection system. I don't have room for a air-to-air intercooler in front of the radiator anyway. anybody thought of using a smaller top of the engine mounted subaru style intercooler? for those of you going remote mount.

Anyway hope this proves I've thought it out, so what do you guys that are in the process think? having second thoughts? any major stumbling blocks so far?

Dingo

[streetpirate]

IIRC for m90's work best with remote mount, and a GM m90 will work best with a on top of intake mount.

[Dingo509]

I'll have it tonight to look at it and take some measurements, but IIRC when i last saw it,it was a manifold mounted style. Which should be GM unit. regardless i think i can get it to work but i have one major question:

Can the snout be flipped over to run on the opposite side? for example if the drive is coming in on the drivers side can it be simply onbolted and flipped so that it comes in on the passenger side? I don't think it will matter with the mounting i have planned but it might.

Dingo

[Dingo509]

Anybody else getting anywhere's with theres?

I'm not sure if i'm going to get the GM one from my buddy or not, he wants me to buy it without getting to spend some time checking it out, and he's not THAT good a friend, so i smell something fishy.

Oh BTW can any of you that have a SC model measure from the center of the pulley to the center of the output manifold? By the looks of the few pictures i can find it's looks WAY too short to be centered on the intake manifold, so i may need to look for a longer snout.

Dingo

[JJacobs]

I had a GM 3.8 M90 with a really long snout. I don't have it anymore or I'd measure it for you. That charger was a really long piece- probably could have been adapted with a custom plate but really just a PITA compared to the compact Tbird M90.
A guy in town managed to get an M112 Lightning blower adapted to an LT1. Pretty cool.

[1bolt]

Personally the disadvantages of trying to mate a JY M90 to the stock intake manifold AND have it driven off the stock belt totally outweigh the hassle of coming up with some plumbing.

The T-bird M90 is divorce mounted, has piping that can be adapted to. So get some aluminized exhaust tubing and make your plumbing
adapt the T-bird charge outlet to the plumbing. All you need is about a hundred bucks worth of silicone elbows and couplers, and a few steel J bends to be cut up.

[Dingo509]

I had a GM 3.8 M90 with a really long snout. I don't have it anymore or I'd measure it for you. That charger was a really long piece- probably could have been adapted with a custom plate but really just a PITA compared to the compact Tbird M90.
Pretty cool.

After looking at my buddies GM M90 i agree i think it would be too long to fit and still have room for a decent radius 180* turn back to the airbox

Personally the disadvantages of trying to mate a JY M90 to the stock intake manifold AND have it driven off the stock belt totally outweigh the hassle of coming up with some plumbing.

The T-bird M90 is divorce mounted, has piping that can be adapted to. So get some aluminized exhaust tubing and make your plumbing
adapt the T-bird charge outlet to the plumbing. All you need is about a hundred bucks worth of silicone elbows and couplers, and a few steel J bends to be cut up.

I agree that the remote/divorced mount M90 would be easier. except on major problem.... Where to mount it?

I am already using my Air conditioning compressor (for real A/C) have a kilby bracket with a york for OBA, and am in the process of fabbing up a bracket for Dual Alternators. that pretty much eliminates the passenger side of the motor for any accessories. that the reason I'm leaning towards a manifold mount.

Dingo

[seanyb505]

I say put it in the center console. Like some people will have a nitrous bottle in there, you have a supercharger.

[goodburbon]

Ok I went and picked up one from a ford SC. Has anyone done anything yet? I really want to see a setup or 2 before I attempt mine.

[seanyb505]

feast on this: http://www.youtube.com/watch?v=Fy2cJT5URyY (http://www.youtube.com/watch?v=Fy2cJT5URyY)

[Dr. Dyno]

Well guys, Lee at Hesco is willing to put a supercharger kit into production for the XJ provided he receives an order for a minimum of 25 kits. Cost will be under $3000 so if anyone wants to start a group buy, it could be on.

[goodburbon]

OK that's nice but I'm not giving up my AC. Anyone else?

[1bolt]

A budget SC kit from HESCO?... what's next an afordably priced aluminum head?

[WPG98XJ]

Ok I went and picked up one from a ford SC. Has anyone done anything yet? I really want to see a setup or 2 before I attempt mine.

not me, i still have mine though.... i'm not gonna lie, i'm really lazy person.:( :)


Well guys, Lee at Hesco is willing to put a supercharger kit into production for the XJ provided.....

provided 25 people are willing to pay $4000 each... yep $100,000, and another person fixin to charge an exuberent ammount of $ for a s/c kit for our junk.

[Dr. Dyno]

Price for Hesco's prototype XJ supercharger is under $3000, not $4000. I know that's more than some of our Jeeps are worth but it's worth considering if you plan to keep your Jeep for a few years.

[gbaronetXCR]

Not come back in here for a while. Intersting to see more SC projects. Been out kicking a few tires on a cherokee's, especially after this winter!

[urban yan]

Well guys, Lee at Hesco is willing to put a supercharger kit into production for the XJ provided he receives an order for a minimum of 25 kits. Cost will be under $3000 so if anyone wants to start a group buy, it could be on.
well damn !!! that is interesting, BUT it leaves me with a ton of questions:

01) How will it mount? Like the Stampede SuperCharger (http://www.think-performance.com/jeep_cherokee.html) mounted onto a custom
manifold, or will it be a hack job that eliminates the AC compressor? Will the hood
need cutting like the Avenger system (http://www.avengersuperchargers.com/)?

02) Why 25 orders? Last I heard 505 performance (http://shop.505performance.com/product.sc?categoryId=15&productId=158) will offer their SC for 3k with a
10 unit group buy.

03) What type of numbers does Hesco expect to yield?




.

[seanyb505]

I would imagine more than 505...

[Dawg]

Anyone know anything about this
http://www.4wheeloffroad.com/techarticles/engine/131_0803_40l_jeep_xj_cherokee_supercharger_kit/index.html

[urban yan]

how old is that article, because it looks allot like the think performance Stampede SuperCharger

http://i207.photobucket.com/albums/bb146/urban-yan/Jeep/StampedeSuperCharger.jpg

[Dawg]

As far as I know it is recent ?how old is that article, because it looks allot like the think performance Stampede SuperCharger

http://i207.photobucket.com/albums/bb146/urban-yan/Jeep/StampedeSuperCharger.jpg

[urban yan]

I seriously think that's a derivative of the Stampede SuperCharger mentioned above.

I would definitely love one of those units.. more power and better fuel economy in one stealthy package. Now if only it didn't cost so much. Personally, I think they would sell like hotcakes around $2500.



.

[gradon]

hotcakes: if they were $2000.

[urban yan]

lol... ok hotcakes at $2500
pancakes soaked in canadian maple syrup at $2000