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Unread 11-10-2011, 07:22 PM   #1
TurboTPI
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1995 ZJ 
 
Join Date: Feb 2011
Location: Bensenville, Il
Posts: 568
Turbo 4.0l ZJ

I am starting a project. I have a turbo on the way for my daily driver/weekend worrier ZJ. I have experience in turbo setups. The 4.0 has a strong bottom end and I'm going to push it. My thoughts are 5-7 lbs of boost on 93 octane. I'm going to do a fuel management unit at the ratio of 12:1. (12psi of fuel pressure to 1lb of boost) Photos will follow. Wish me luck. Lol. This will be a test of the 4.0l engine. Mind has 210,000 miles on it now. We will see how it holds up. It currently does not use any oil or leak any. And I take very good care of it maintenance wise.

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95 ZJ 4.0 Turbo-up 5.5 on 33x12.5's, Ford 8.8 w/Artec truss (His)
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Unread 11-10-2011, 07:24 PM   #2
KingtheZJ
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1998 ZJ 
 
Join Date: Nov 2009
Location: Rochester NY
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this will be sweet! i want to see how it tuns out.
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Unread 11-10-2011, 07:30 PM   #3
Freestyle713
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Unread 11-10-2011, 07:31 PM   #4
turbinetech2
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1994 ZJ 
 
Join Date: Oct 2011
Location: Mauldin, South Carolina
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Sounds like a cool project. My son will be talking my ear off when he hears somebody is turboing his 4.0l... Cmon, we can do that to your ZJ!! Keep us posted!
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Unread 11-10-2011, 07:33 PM   #5
zwzj4life
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Quote:
Originally Posted by Freestyle713 View Post
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x2 Should be interesting
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1995 Jeep Grand Cherokee Laredo (ZJ) / 4.0L I6 / D30 front, D35 rear / 3 Inch Boost / 31X10.50R15 BFGoodrich M/T
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Unread 11-10-2011, 07:38 PM   #6
1717pxcb
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1997 ZJ 
 
Join Date: Nov 2011
Location: e. stroudsburg, pa
Posts: 64
what will you be using to tune?
plan on running any meth/water injection?
what will you use to monitor everything?
any cats in the exhaust? (always been a fan of catless)
which turbo?
running an intercooler i assume?
i have no (read: absolutely 0) knowledge of turboing jeeps so will you have to do any work to the maf or will the stock maf work?
have you thought about an upgraded fuel pump or can the stock pump handle what you're after?
step colder plugs?
blah blah blah
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Unread 11-10-2011, 07:38 PM   #7
96zj1987
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1996 ZJ 
 
Join Date: Jan 2011
Location: Horsham, Pa
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I would like to see how this works out my plan was to build the block I just pulled and have my friend build it for boost. Unfortunately the rod shot through the wall of cyl #2 into #1 he currently holds the record for the worlds fastest eclipse spyder built the engine himself so I figured what the heck. I would like to see what you put down also consider meth should help out quite a bit. I know the 4.0 block can handle 1000hp+ so this should be interesting!
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Unread 11-10-2011, 07:53 PM   #8
EfiniMotorsport
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1995 ZJ 
 
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Location: Norwalk, CT, CT
Posts: 45
Turbo if you, or anyone else, is interested I have a few pics of turbo setups on the 4.0's. I was looking into this too but have too many other projects going on right now. If you haven't already you should check out 505 performance. They have done a few turbo and supercharged jeeps.
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Unread 11-10-2011, 08:33 PM   #9
1717pxcb
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with an 8 cylinder, i'd supercharge, i think with the 6cyl you can go either way. (not because i know anything, but from what i've seen in the past - turbo 4 bangers and supercharged 8cyls)
really curious to see how this pans out.
efini, please post some pics and/or info on turbo builds - i was just thinking about this today - who has turbo'd their zj?

Last edited by 1717pxcb; 11-10-2011 at 09:35 PM..
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Unread 11-10-2011, 08:58 PM   #10
ZickJagger
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1998 ZJ 
 
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My cousin built a turbo'd 4.0 but its a an XJ I believe. Its a Cherokee..Idk anything about them. He lives in Puerto Rico and I haven't gone to visit him, but he claims to have around 350hp and has a lot of other custom work done to it. If I can get some info and photos from him I'll get back to you.
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Unread 11-10-2011, 08:59 PM   #11
ZickJagger
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TurboTPI..I just realized you were in Bensenville. I'm in Vernon Hills. Depending on how this turbo build goes for you, would you be interested in doing another? :P

Screw that...wanna help with a lot of things? Such as...a lift...how about control arm bushings..can you change those out or no?
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Unread 11-11-2011, 12:03 AM   #12
TheHalfWit
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Location: Alexandria, Virginia
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I plan on following this myself, best of luck to you. I'm planning on stroking mine next spring, but this also looks interesting enough to look into.
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Unread 11-11-2011, 12:08 AM   #13
Hussler
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I would have turbo'd my 4.0 by now but every setup ive seen on the XJs was a total ***** for the builder, just plain old not enough space.
Always wanted to turbo something. Good luck!!!
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Unread 11-11-2011, 12:17 AM   #14
JerzeyBoyWJ
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gonna be watching this one
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Unread 11-11-2011, 10:34 AM   #15
TurboTPI
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Thanks for wishing me luck. Haha. The Turbo I have is a t3/t4, 57 trim. Is supports about 450hp, obviously I will not be making near that, but it should do good on a 4.0l. I'm not intercooling it for now. Depending on how things go, I may add some type of intercooled later on. As for tuning it, the fuel management unit I'm getting should work fine. All it does is raise the fuel pressure with boost pressure. Quite simple. When I get the turbo (early next week) I will be working on the location of the turbo. As of now I'm thinking passenger side of the engine. Hopefully i will be able to keep the a/c. The a/c receiver/drier is gonna be tight tho.
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02 WJ Limited 4.7l HO-stock (Hers)
95 ZJ 4.0 Turbo-up 5.5 on 33x12.5's, Ford 8.8 w/Artec truss (His)
92 Firebird Formula custom turbo setup (His)
09 Polaris Dragon 800 (His)
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