Meth Injected Stroker

[BBeach]

I saw this on ebay the other day http://cgi.ebay.com/ebaymotors/ported-methanol-intake-4-0-4-7-jeep-stroker-242-l6-ho_W0QQcmdZViewItemQQcategoryZ36474QQihZ010QQitemZ 200054155305QQrdZ1QQsspagenameZWD1V

How much does meth injection help powerwise on a naturally asprirated jeep? Im assuming he could advance the timing a bit, and ive heard that you could use windshield washer fluid.... Do you need a controller for something like this? I know people using them on wrx's and trucks as well as the luftwaffe in ww2 but no on an xj.
http://i10.ebayimg.com/05/i/000/7c/06/2161_1.JPG

[BBeach]

This doesnt belong to anyone on the boards?

[j99xj]

I've heard of nitro-methane in dragsters but never heard of methanol injection for a Jeep.

[87manche]

I
How much does meth injection help powerwise on a naturally asprirated jeep? Im assuming he could advance the timing a bit, and ive heard that you could use windshield washer fluid.... Do you need a controller for something like this? I know people using them on wrx's and trucks as well as the luftwaffe in ww2 but no on an xj.
[IMG]
I seriously doubt that methanol injection would be worth it in a NA motor.
methanol will send the mixture really rich and increase the octane rating of the fuel charge by 20% or so.
Both things are great if you're running a forced induction, but it wouldn't do a lot for a NA motor.
DO NOT USE WINDSHIELD WASHER FLUID!
Washer fluid also contains water, and some detergents, not something that your combustion chamber would appreciate. If you really want to try it then go find a hobby shop that deals in glo engines, and buy yourself a gallon of methanol. If they don't sell methanol then buy FAI no nitro fuel, it will be methanol with a little oil in it.

[BBeach]

Im not trying this at all. I dont have the money to mess around with something that i thought would mess up my motor without forced induction. I just saw it on ebay and was wondering if it could be used for NA, unless this guy was running forced induction with a 10.5:1 compression ratio but idk.

[tealcherokee]

I seriously doubt that methanol injection would be worth it in a NA motor.
methanol will send the mixture really rich and increase the octane rating of the fuel charge by 20% or so.
Both things are great if you're running a forced induction, but it wouldn't do a lot for a NA motor.
DO NOT USE WINDSHIELD WASHER FLUID!
Washer fluid also contains water, and some detergents, not something that your combustion chamber would appreciate. If you really want to try it then go find a hobby shop that deals in glo engines, and buy yourself a gallon of methanol. If they don't sell methanol then buy FAI no nitro fuel, it will be methanol with a little oil in it.

what are you talking about. you CAN use water. all its doing is cooling the intake air. it doesnt increase octane rating, all octane rating is the fuels resistance to igniting. and it wont make the engine run rich either, YOU have to richen the motor up because now the air is more dense, more can fit, its running leaner

these also no reason to NOT use window washer fluid, it works quite well actually

[BBeach]

what are you talking about. you CAN use water. all its doing is cooling the intake air. it doesnt increase octane rating, all octane rating is the fuels resistance to igniting. and it wont make the engine run rich either, YOU have to richen the motor up because now the air is more dense, more can fit, its running leaner

these also no reason to NOT use window washer fluid, it works quite well actuallyAlrite maybe i was right about the windshield washer fluid, i heard it somewhere and i think it was for bryson's turbo kit. I was just wondering how effective this is with natrually aspirated. Is there any way to have a dry shot (just shot right into the intake)?

[87manche]

what are you talking about. you CAN use water. all its doing is cooling the intake air. it doesnt increase octane rating, all octane rating is the fuels resistance to igniting. and it wont make the engine run rich either, YOU have to richen the motor up because now the air is more dense, more can fit, its running leaner

these also no reason to NOT use window washer fluid, it works quite well actually
this really depends on the application.
If you're misting it to cool the intake charge sure, but if you're wanting to use it to make significant power you'll be adding more than that.
on an NA motor you don't have boost to increase the airflow, so dumping that much methanol in to the intake would make it run richer.
Using windshield washer fluid is unacceptable as well, again, if you're just using it to cool the intake charge sure, but a truly methanol injected motor runs on the alcohol as well.
Running on alcohol WILL increase the octane rating, and allow you to advance the timing, hence the big power gains that are possible.,
I think it really depends on the application.
Using it like an intercooler or adding enough to actually make it part of the combustion process.

So, the questions about that motor in the first post is this:
Is it just setup to have the intake cooled or is it setup to run methanol as part of the fuel mix?

[MudDawg]

If you want to make more power with methanol, you need a TON of compression....in rough terms, you need twice as much methanol for a proper fuel/air mixture as compared to gasoline. A lot of the heat of compression is counterbalanced by the heat absorbed by the vaporization of the methanol.

How much power the engine will produce is the direct result of cylinder pressure generated by the heat of combustion when the mixture fires...since vapor temperature and pressure are directly correlated, you need all the heat you can get within reason. (a seperate and lenghtly discussion)...

Bottom line....that manifold would be cool if it was drilled and tapped for 1/16" npt so a set of nitrous foggers would screw in....welllllllll if they were drilled and tapped at the other end of the runners. (you want the nozzles as close to the valve as resonably possible.

[BBeach]

Nitrous would be pretty cool, idk how much of a shot a 4.0 can take within reason. It seems pretty simple to install, do you need a controller for nitrous or is it just press a button and dump it into the incoming air charge? Also, how hard is it to advance the timing on the engine? I have a distributor and i heard you can just reposition the rotor such and such degrees ahead of where it normally is, or does the computer automatically change it back to normal? I know you'd need to run 93 or something if you advanced it too much but itd be interesting. Also, i know its prolly somewhere online or in my haynes manual but what is the timing advance for a 98 4.0 at full throttle?

[MudDawg]

If you are interested in nitrous for your rig, my best advice would be to contact Hesco for one of their kits...and you get awesome tech help too...I have used a LOT of nitrous over the years....but none in a EFI Jeep..dragbikes, yes, non-ecm controlled carbed cars yes.

[BBeach]

I wasnt planning on using nitrous anytime soon, its just a DD and i dont need to blow anything up...well yet. Outta curiousity, regular fuel injectors just screw right in correct? I dont know much about fuel injection and even less about carbs but judging by the way the meth injectors have 1/4" thread or whatever, im assuming thats the same way regular injectors go in. I know someone willing to sell 8 ford racing 24# injectors for $75, would those fit right into my jeep or do i need modifications to do so? I wouldnt do anything like this until the summer when i look into stroking it. I know that the ones in my jeep right now are 19# but are there any other differences between the two?

[87manche]

injectors don't screw in, they seat into the intake manifold and use o-rings to seal the intake manifold and fuel rail.
the ford injetors will fit, goto the parts store and get a new o ring set.

[Flash]

Water, meth,(yes! WINDSHIELD WASHER FLUID!)
has been used in turbo diesel(like Dodge/Cummins) for years now with grate success! don't now how it would do in a 4.0 naturally aspirated eng but.............................TRY IT and inform us all!!!!!:attom: ;) :D


Just make sure the spray starts and end at around 2,000 rpm and vary small nozzles to begin with!

EDIT lets say, start at 2000 rpm and off any time its not at full throttle!