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Old 05-09-2008, 09:29 PM   #1
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turbo for 4.0L

I know this my seem retarded but im replacing my 2.5l with a 4.0l and im looking for a turbo or turbo kit for it. which my 2.5l will be up for sale when i start working on my project next spring.

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Old 05-09-2008, 09:47 PM   #2
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This has been discussed many times with negative results. the only boost kit i know of is a supercharger from Kenne Bell.

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Old 05-09-2008, 09:57 PM   #3
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i know about the supercharger but i seen pics with the turbo in it i don't know whats all involved with it. i know i'll also have to make my own pipes but i was just wondering i there was a kit or do i have to peace it together. sorry i hould of elaberated alittle better.
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Old 05-09-2008, 09:57 PM   #4
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There is one turbo kit for the 4.0L... although I don't think the company is around any more, if that says anything.
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Old 05-09-2008, 10:03 PM   #5
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there was some company located in mexico that made kits but as Az said, its gone lol. Basically if you have welder and cutting tools you can make one on ur own. Gotta look for electronics but they are available. At 5 psi you dont need an intercooler either.
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Old 05-09-2008, 10:03 PM   #6
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what was they're name
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Old 05-09-2008, 10:05 PM   #7
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couldyou give me a place were i could start looking
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Old 05-09-2008, 10:12 PM   #8
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here we go those are another guys that made a super charger kit. I knew they made it for JK, i didnt know they also designed one for TJs
http://www.rippmods.com/RIPP_Superch...9706-sds-1.htm



Here we go look at this article from JP magazine
http://www.jpmagazine.com/techarticl...des/turbo.html
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Old 05-09-2008, 10:19 PM   #9
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I'd rather go for a Stroker or V8 swap instead of a turbo... and 505Performance is the company I was thinking of. Haven't heard anything about them since that magazine article.
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Old 05-09-2008, 10:22 PM   #10
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a stroker or a v8 swap is a lot harder to do than a bolt on plumbing project.

You need a lot more tools to do the swaps too.
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Old 05-09-2008, 10:31 PM   #11
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I'm not talking about how hard it would be, I'm talking a price to power ratio.
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Old 05-09-2008, 10:36 PM   #12
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I understand Az. Again many people dont have the tools to do a swap while a turbo kit is easy to do, however from above he is swapping a 4.0 instead of the 2.5 so while hes doing the work, might as well put in a v8. That would save him money on the 4.0 and the turbo kit.
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Old 05-10-2008, 02:44 AM   #13
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I understand Az. Again many people dont have the tools to do a swap while a turbo kit is easy to do, however from above he is swapping a 4.0 instead of the 2.5 so while hes doing the work, might as well put in a v8. That would save him money on the 4.0 and the turbo kit.
Except he would need new axles, etc with a v-8
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Old 05-10-2008, 02:48 AM   #14
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Except he would need new axles, etc with a v-8
He'd need new axles with a turbo-6cyl as well... even if he stuck with the 4cyle, he'd need new axles to run larger tires. I've seen a 4cyl bust shafts in D44's with 37's.
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Old 05-10-2008, 02:58 AM   #15
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He'd need new axles with a turbo-6cyl as well... even if he stuck with the 4cyle, he'd need new axles to run larger tires. I've seen a 4cyl bust shafts in D44's with 37's.
Guess it depends on what he likes to do, I only do light to medium stuff. I can't afford to fix anything or re-paint.
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Old 05-10-2008, 07:28 AM   #16
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A trubo kit can be much cheaper than even a stroker kt if you know what you are doing. Make your own kit and the only real expensive/hard to find parts are elctronics and the exhaust manifold...( that last part also depends on where you want the turbo to sit in teh compartment... do you want it tucked directly under teh exhaust manifold or over in front of teh engine like the 505perf. one was??

I built an entire intercooled turbo kit for a Civic (electronics and all) for less than $1000. So it can be done cheap.
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Old 05-10-2008, 07:31 AM   #17
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Wow!! I found 505's website...they want $5000 for their turbo kit with Accel Electronics and an intercooler... what a ripoff...
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Old 05-10-2008, 09:12 AM   #18
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Turbo-I recommend squires.
STSTURBOS.com
Trucks and Horsepower TV both did an install on this system. It is universal, remote install system designed for any vehicle, especially those with little to no room under the hood. Not bad pricing either.
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Old 05-10-2008, 09:34 AM   #19
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Quote:
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Turbo-I recommend squires.
STSTURBOS.com
Trucks and Horsepower TV both did an install on this system. It is universal, remote install system designed for any vehicle, especially those with little to no room under the hood. Not bad pricing either.
those are VERY nice systems and componets. I had a setup on a camaro.

BUT.... they are not the greatest for off road vehicle applications. Most of there turbo's and component mount under the vehicle. with the exhast system.

Drive through mud or water = bad results.

As stated before STS's products are amazing and great quality. But their system may not be the best for a jeeper. Unless they have a new turbo setup that you could mount under hood. And if they do ....do it!
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Old 05-10-2008, 01:21 PM   #20
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Drive through mud or water = bad results.

Then you end up with mud cooling system

The only turbo kits i've seen use the stock exhaust manifold (needs to be working - no holes or cracks) and then replace the pipe that goes from the manifold to the catalytic converter with another one that goes up on the passenger side where the turbo sits. Then another pipe leads back to the cat. What this picture makes me wonder is what happens to all the vacuum lines on the intake manifold?

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Old 05-10-2008, 02:27 PM   #21
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Those remote mount turbos that go under the car are not that great. Regardless of what they tell you, the turbine needs to be as close to where the exhaust leaves the valve as possible. The heat in the exhaust gas IS important to making boost (regardless of what some comapnies tell you).
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Old 05-10-2008, 02:45 PM   #22
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buy a Hummer
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Old 05-10-2008, 03:02 PM   #23
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Walker, i think the bigger problem is the high pressure piping. The closer the turbo to the valves, the less high pressure piping. The further away the more.

I've never heard of the heat being needed. I know cooler is more dense however i dont see the reason why you need less dense (hotter) gasses to push the turbine.

The further away the more lag you will have when you step on the gas, but can you explain why you need hotter gasses?
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Old 05-10-2008, 04:10 PM   #24
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I can sell you a slightly used TD04 if your interested
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Old 05-10-2008, 08:53 PM   #25
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It has to do with thermodynamics and teh expansion of hot gasses as they exitthe exhaust port. I have a book on turbos.. it has a 40 page chapter on just thermodynamics in the Turbine...I know i am a geek, but i was really into sport compacts and imports for a while....
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Old 05-10-2008, 11:33 PM   #26
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ok but my next question is would it be worth it. and could i use any turbo or do i have to have a spacific one.
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Old 05-10-2008, 11:35 PM   #27
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whats a td04 im not very good with turbos i mean like brands and how it all works
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Old 05-10-2008, 11:44 PM   #28
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Stock Subaru STI turbo, I bought one and never ended up putting it in my Suby
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Old 05-11-2008, 12:17 AM   #29
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ok but my next question is would it be worth it. and could i use any turbo or do i have to have a spacific one.
You can get any turbo however they will perform different, a small turbo will make boost at lower rpms while a bigger turbo will create boost at higher rpm but will take it long to spool up. While you're getting a turbo make sure you get one thats for about 5 psi. You can go with bigger turbo for more boost but you will need more stuff and i'd not recommend it for new people. 4-5 psi will give you about 50-60 extra horses and 70-80 lb of torque in a 4.0.

I'd look for a stock turbo from some import such as a suby.


Different turbos will have different mounting bolt patterns but since you're welding your self i dont think that will be an issue.
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Old 05-11-2008, 06:26 AM   #30
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i am a big fan fo the 14b turbo off old DSM's its the only part they got right...hehe.

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