6HP from a HESCO High flow water pump

[rav]

Was just looking at their website and stumbled upon this, LOL, i will be happy even if i get 3HP.

High Flow waterpumps

Another first!
Provides 10 to 20% more cooling efficiency than the stock water pump. We have replaced the stock stamped steel 5-vane impeller with an 8-vane billet aluminum impeller to achieve this goal. The impeller is larger than the stock and lessens the cavitations of the coolant to create a more positive flow in the space between the impeller and the #1 cylinder. The dyno showed an additional bonus of 6 hp. and 2ft/lbs. of torque gain we weren’t expecting. The horsepower gain comes from the impeller slicing through the coolant instead of paddling the coolant. Individual gains may very depending on what accessories are already in place and engine condition. Either way it is a worthy addition to any Jeep engine whether it’s a street driver or an off-road rock crawler.

© Copyright 2003 Hesco Inc.. All Rights Reserved.

[jack SF]

i got that pump. did not notice any power gains and did not notice any cooling gains. still overheated like before the pump. jack

[rav]

Originally posted by jack SF
i got that pump. did not notice any power gains and did not notice any cooling gains. still overheated like before the pump. jack

Thanks, you just saved me $149, I never trust the HP #'s anyway, but i am just curious whether you changed any other stuff(radiator,thermostat,etc), as a waterpump change by itself wont help.

Thanks a lot;
Ravi

[jack SF]

i changed everything along with the pump. high flow thermostat housing, 3 row rad, fan clutch, hood vents. finally what fixed my overheating was the new style 10 blade auxiliry fan. i did not feel any horse power but than there is no way to feel that low of a number. so maybe their pump does make a couple of hp. jack

[small pederson]

:bs: a stroker will increase your horsepower, not a water pump.

[cherokee89]

Hi Guys. I am new here, and I think I am addicted. There is such a great wealth of information in these forums, but you already knew that.

Anyhoo, about the Hesco water-pump. I have it, but I cannot say I noticed any difference. You can tell it is very well made, but I am not sure it is worth the $$. Probably better sticking with a stock job with a warranty.

[Dr. Dyno]

DC fitted a new slitter vane water pump to '99 and later 4.0's that's 50% more efficient than the old one and they gained only 2hp from it, so Hesco's claim of a 6hp gain is a bunch of bull.

[jsedillo]

I have one of the hesco pumps and after working for 2.5 years it is now dead :(. I can't really tell you what kind of performance gain I got from it. Anyway, if I can submit a picture, I will show you what happened to it.

[JeepSpeed]

DC fitted a new slitter vane water pump to '99 and later 4.0's that's 50% more efficient than the old one and they gained only 2hp from it, so Hesco's claim of a 6hp gain is a bunch of bull.


Dino, my man, do you know if the 99' and up pump fully compatible with earlier 4.0Ls? I've been thinking about the Hesco, but it's Hesco, and I'm broke. If I could just go to an Auto parts store and get a replacement pump for a 2000 XJ, throw it on my 94 and be done, that would be much more afforable.

[XJZ]

I don't know of any h.p. gains, but it's a hell of a pump (and since when does the aftermarket exaggerate their results? :D ). Damn thing should be hanging in a museum, gotta love those billet turbines. Just too bad they don't have a clear housing. :D

Prior to the Hesco, I went through 3 FlowKlunkers in about as many months, all had bad bearings. The Hesco's been going strong for years.

[FUNKYTEE5]

I'll bet the 6hp gain was on a heavily modded motor at 6000rpm or so:) High rpms is the only place where a waterpump will use much power. It's a selling pitch or I'm missing something!

FUNKYTEE5

[75SV1]

I will say I did call about this pump for a replacement on an '03 engine. At least they were honest and said the one I had was good enough and didn't need to replace it. I did get the valve cover spacer,hi-flow thermostat housing and the thermostat housing spacer. Sent out my 99+ intake to have it ceramic coated last night. Maybe get this thing running.
Tom

[BrettM]

how much are you guys paying for these? my MJ will overheat parked in idle (w/o fans on) but if I hold the idle at 1000, it won't overheat, so I'm guessing that is simply the stock pump not flowing enough at idle.

[XJZ]

how much are you guys paying for these? my MJ will overheat parked in idle (w/o fans on) but if I hold the idle at 1000, it won't overheat, so I'm guessing that is simply the stock pump not flowing enough at idle.

$149.95 http://hescosc.com/HFW.html

[jsedillo]

Here's what it looks like, after about 2.5 years. Maybe hesco should reconsider using an aluminum impeller.

http://infohost.nmt.edu/~jsedillo/images/w_pump1.JPG
http://infohost.nmt.edu/~jsedillo/images/w_pump2.JPG
http://infohost.nmt.edu/~jsedillo/images/w_pump3.JPG

[JeepSpeed]

Here's what it looks like, after about 2.5 years. Maybe hesco should reconsider using an aluminum impeller.

http://infohost.nmt.edu/~jsedillo/images/w_pump1.JPG
http://infohost.nmt.edu/~jsedillo/images/w_pump2.JPG
http://infohost.nmt.edu/~jsedillo/images/w_pump3.JPG




Wow. That doesn't seem like typical Hesco quality.

[JeepSpeed]

Dino, my man, do you know if the 99' and up pump fully compatible with earlier 4.0Ls? If I could just go to an Auto parts store and get a replacement pump for a 2000 XJ, throw it on my 94 and be done, that would be much more afforable.



BTT for that question. Anyone?

[XJZ]

Wow. That doesn't seem like typical Hesco quality.

Can you say sludge? What was that cooling system filled with? I don't think you can blame the aluminum.

[XJZ]

Can you say sludge? What was that cooling system filled with? I don't think you can blame the aluminum.

Either that or that's what an additional 6 ponies will do to ya. :)

[Osprey413]

Were you using the dextron(spelling?) coolant? I've heard that regular coolant will eat away at aluminium, which is why GM vehicles have to have dextron coolant because they have aluminium radiators. Or am I mixing things up again?

[John(XJ)Jeep]

I was just gonna say that dosesn't look like normal wear at all, more like something was eating away at it.

[jsedillo]

No, just prestone and water :)

[75SV1]

I took of my '03 water pump over the weekend. The heater hose tube was loose, so I had to take it off to tighten it. It had a plastic impeller simular to the Hesco's. I placed the water pump on a '95 block I have. The '03 had an extra bolt, and another bolt was in a different location. I also have an '00 block. So I took the water pump off of it. It had a standard impeller. It did fit the '95 block. I don't know when they started to use the 'improved' impeller or water pump. As a thought, you could cross refference water pump gaskets and see if there is a change in them, and see if there is a change in water pumps.
Tom

[JeepSpeed]

I took of my '03 water pump over the weekend. The heater hose tube was loose, so I had to take it off to tighten it. It had a plastic impeller simular to the Hesco's. I placed the water pump on a '95 block I have. The '03 had an extra bolt, and another bolt was in a different location. I also have an '00 block. So I took the water pump off of it. It had a standard impeller. It did fit the '95 block. I don't know when they started to use the 'improved' impeller or water pump. As a thought, you could cross refference water pump gaskets and see if there is a change in them, and see if there is a change in water pumps.
Tom




Yeah, thanks for the input. I went to autismzone yesterday and the part number for the 94' water pump was the same as for the 2000. It was an aftermarket one, but it was the earlier design. I'm going to go check at the dealer soon, I guess I'll have to to go to the stealership to pick up a new design pump..... :rattle:

[BIG-G]

Well i just ordered the hi flow pump and t-housing from hesco and im running hot alot!!! I also ordered those cool flex radiator hoses and bought a 160 degree thermostat and will hook up an override elec fan switch to top it all off.

Im just looking in a good 30 degree drop in running temp or any for that matter. I'll let u guys know how it all works out when installed.

[XJZ]

Well i just ordered the hi flow pump and t-housing from hesco and im running hot alot!!! I also ordered those cool flex radiator hoses and bought a 160 degree thermostat and will hook up an override elec fan switch to top it all off.

Im just looking in a good 30 degree drop in running temp or any for that matter. I'll let u guys know how it all works out when installed.

Are you sure that flow is isn't impeded elsewhere down the system? If there's a bottle-neck anywhere, the new pump, etc. won't do you much goood. A pump that flows a little more than stock isn't going to be the cure for an overheating problem. I'd be more concerned about the radiator, unless you've already checked that.

[BIG-G]

Are you sure that flow is isn't impeded elsewhere down the system? If there's a bottle-neck anywhere, the new pump, etc. won't do you much goood. A pump that flows a little more than stock isn't going to be the cure for an overheating problem. I'd be more concerned about the radiator, unless you've already checked that.

I figured id just upgrade everything. If that all doesnt do much, i believe summit has a nicely expensive race design aluminum radiator that i'll get.

[bzdel2441]

so whats the final verdect on the water pump??? I cant decide if I should buy one or not... Is it worth the $100 extra comparted to a stock style pump... Really I want it for the gains, added cooling and faster engine reving..

Whats the diff. between the flowkoolers and this hesco unit??

Thanks
Chris

[John(XJ)Jeep]

Well whatever you pick just don't put something in that loves to munch on the impeller.

[Suwedan]

hi how are you ?
I want turbo kit for engine jeep stock 4.0l yaer 1999
thank you

[JJacobs]

So go buy one then! What does this have to do with water pumps?

[streetpirate]

http://www.catpep.com/

Cat Power water pumps are the best bang for the buck, at $34 + shipping

[Dr. Dyno]

hi how are you ?
I want turbo kit for engine jeep stock 4.0l yaer 1999
thank you

Like JJacobs said, your post has nothing to do with the topic in this thread (water pumps). If you're serious about a turbo, go to http://www.505performance.com/Home_Page.html

[Stumpalump]

So go buy one then! What does this have to do with water pumps?
The dude was from Saudi Arabia! Give him a little slack for at least knowing a little English.

[Onkover]

Scary.. I got a Flow Kooler. YEt I have come to find that these style of pumps mixed with a high flow thermo housing and stat casues water to flow to fast. I am currently running a CSF 3 core and the temp going in the radiator compared to the temp going out was only dropping about 15*. I added a restriction in the upper hose (dime hole washer) and now am getting about 30* difference. A friend of mine allowed me to compare my numbers aginst his 4.0 and he has about 50* difference.

[Dr. Dyno]

I wonder if the restriction would be more effective if you placed it in the lower radiator hose? It would keep the coolant inside the radiator for longer by slowing down the rate of flow out of it.

[honesT]

I wonder if the restriction would be more effective if you placed it in the lower radiator hose? It would keep the coolant inside the radiator for longer by slowing down the rate of flow out of it.

Would that not go against the install of a high flow water pump ?

[Fastdemise]

Sounds like we should be buying aftermarket Low flow pumps.

[Talyn]

A high flow pump can have a negative effect on cooling. If the water is flowing too fast through the radiator it won't transfer heat efficiently. I haven't tried Hesco's pump but I had that experience with a flowkooler, so it might be different with theirs. Or perhaps it was just the combo that I had that didn't play well with a high flow. Also, inserting a restriction in the return will allow greater pressure in the engine block which would help prevent localized boiling/hot spots.

[No4x4Yet]

http://www.catpep.com/

Cat Power water pumps are the best bang for the buck, at $34 + shipping

Anyone use this? Its $51 now but still a steal!

[yossarian19]

I tend to think that with a water pump, you want to go with OEM suppliers or equivalent. Think about what your time (potentially your engine..) is worth and whether you want to be doing the water pump again next year.

If you don't need the extra flow, go OEM and do it once.

[Keithmania]

wow talk about raising a thread from the dead... Anyone use an electric water pump to save on parasitic drag? I have never come across one for an XJ.