Turboing a 4.0????

Greg

I run a tight ship... wreck
Admin
FYI... I have a good friend that, after tons of research, turbocharged a Honda motor & had the motor built to handle the boost (custom cams, low comp. pistons, stronger ignition, etc). He ended up blowing up 3 engines before ditching the turbo... does your budget count for replacing the engine? :rofl::rofl:

My advice, do it right or don't do it at all. Free & cheap parts don't mean it will work. Be prepared to sacrifice a motor or 2.
 

Devel

Just an Outlaw....
Location
North Salt Lake
the nice thing is that the turbo should spool up quickly where it is a smaller turbo. which is nice because the jeep redline is quite low
 

Greg

I run a tight ship... wreck
Admin
the nice thing is that the turbo should spool up quickly where it is a smaller turbo. which is nice because the jeep redline is quite low

I think you're still missing the point... that Eclipse turbo is more than likely too small for the Jeep 4.0!
 

Greg

I run a tight ship... wreck
Admin
From this link-

http://www.sundaytimes.lk/070513/ST1/st3.html

Nowhere in the world of engine building is finding correct compatibility more important than with turbochargers. A correctly matched turbo can add more power to your engine than any other single modification. Installing the wrong turbocharger can make your car a high-strung mess, a choked torque machine, or even contribute to serious engine damage. Fortunately for us, a turbocharger is a cold, hard, unthinking machine, so the job of making a good match for your engine is a relatively simple one.
 

ChestonScout

opinions are like Jeeps..
Location
Clinton, Ut
I think you should go with a DIY turbo over the small block chevy just to be nonconformant :D[/QUOTE]



A non conformist in a jeep.:rofl::rofl::rofl:

Your funny
 

Devel

Just an Outlaw....
Location
North Salt Lake
i think i figured it out! thnx greg for the articles. i just need to decide the amount of horsepower i want to run and find a map for that turbo and do a bunch of math
 

waynehartwig

www.jeeperman.com
Location
Mead, WA
Proper tuning is the most important facet of a turbo'd engine. What are your plans for that? If you are planning on running 9lbs of boost on stock (jeep :ugh:) internals, tuning is critical.

I couldn't find any specs online for your turbo, but it doesn't look to promising for being a feasible candidate for your application. Also just curious how much are you willing to spend on this project?

I think you should go with a DIY turbo over the small block chevy just to be nonconformant :D

True.. Not sure how the pistons will hold up to a turbo....

Everything you are talking about is going to create more heat in the chamber. More heat, more detonation - and that will kill your motor.

Colder plugs? Sounds like you are tuning the thing down to be able to try to squeeze the turbo on there and save the motor life.

As we've said, do a write up! :D Not saying it can't be done, but I want to see how you make it work!!
 

BioNuke1

Jeepsus Chrystler
Location
0rem
I dug up as much info as i could on your turbo. The DSM trim T25 is for motors about 1.4L - 2L. I read it was often too small to add power to a Honda :ugh: That turbo is simply entirely wrong for your 4.0L, basically its made for super fast spool on a tiny motor, and producing as much power as you already have.

What you probably want is something more along the lines of a T04B or T04E 50 trim stage V .63 A/R.
Give one of our Sales guys a call at STS Turbo, they're nice guys and can help you size out a turbo that will work awesome for your application 1-866-WE-TURBO or www.ststurbo.com
 
Last edited:

kent l

Registered User
Location
Huntsville
nasayers?

Don't let anyone tell you this can't be done.
I am sure a light pressure turbo 6 to 8 lbs will work for you aplication. It is just getting the right mix of parts and research. Not many guys or gals have ever owned turbo gas cars or trucks and have an understanding of how there turbo systems work.

If you want to get real life knowledge talk to guys who work on them on a daily basis.(eg.) Saab, Porsche, Mistu, Subaru.
It sounds like you are doing some research, keep digging.
(Remember when men could not go to the moon and all jeeps had leaf springs.) If we all thought the same we would be a very boring.

I commend you for thinking out of the box.
 

spencurai

Purple Burglar Alarm
Location
WVC,UT
Don't let anyone tell you this can't be done.
I am sure a light pressure turbo 6 to 8 lbs will work for you aplication. It is just getting the right mix of parts and research. Not many guys or gals have ever owned turbo gas cars or trucks and have an understanding of how there turbo systems work.

If you want to get real life knowledge talk to guys who work on them on a daily basis.(eg.) Saab, Porsche, Mistu, Subaru.
It sounds like you are doing some research, keep digging.
(Remember when men could not go to the moon and all jeeps had leaf springs.) If we all thought the same we would be a very boring.

I commend you for thinking out of the box.
He is not thinking outside of the box. Nobody is saying turbocharging a 4.0 cannot be done but we are simply saying that it cannot be done with that turbo meant for a much smaller motor. We are encouraging him to do something more cost beneficial with his money since he is adamant in doing it DIY instead of purchasing a turbo kit from people who have already done the research and put in the time and effort to offer a reliable well tuned kit.

Thinking outside of the box is not the right term here.

Turbo-charging a motor is RARELY a bolt on affair.
 

kent l

Registered User
Location
Huntsville
Thinking out of the box?

(Thinking in the box, buy a bolt on kit for 5K)
(Thinking out of the Box, research and figure out how to do it and have ownership of the knowledge.)
 

spencurai

Purple Burglar Alarm
Location
WVC,UT
I am going to use 8 of these on my cadillac...well maybe I should use just one!
KKKsmallturbo.jpg
 
Top