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Jeep 4.0L HO Stroker

Hi, I have following project in my mind. I do have Jeep Cheokee XJ -92 with 4.L HO engine (243 MBI). IT has +160 K miles behind and I have started gathering parts for my spare = Stroker engine. Now I hope that somebody out there do have some experience or other way acquired know-how above mentioned topic. I do also have an 258 6-inline engine from Cherokee -80 where I'm goin to get my stroker cranksaft. Then I have an 4.0L (243 TBI) from Wrangler -87 where I'm goin to take the engine block (+studs).

So I try to fix together 3-engines and get one ~ 4.6L HO one.

I repeat a little:Engine block from Wrangler -87 (243), Cylinder Head + Injection System, electronics + Connecting rods + Pistons + Camsaft from Cherokee XJ -02 (243 HO) and Cranksaft from Cherokee -80 (258)

Now the questions: What prolems will I come across? I there difference with turbine plate/flyweel bolts at Crangsafts between 243/258 engines? What else? I will do total rebuilding with all available new repalcement parts and with local automotive machine shop help. Waiting You kind help.

Kindest regards,

Marko Heinsola HELSINKI FINLAND

Reply to
mace
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Do a google search and you will find several websites on it.

I would recommend you go with a fresh turn on the crank and cam.

Also some CJ cranks have an opening for a pilot bushing that will be likely too loose on your tranny nose piece, don't know about the Cherokee 258's.

You might want to look at a replacement crank from a YJ that has the opening for a bearing or at least be aware there are different cranks for different trannies or years of them at least.

Maybe the machine shop will take the '80 one as a core and give you a fresh turned YJ one or one that matches. My personal preference is the bushing, maybe they can supply one the right size or turn a thicker one down?

Needle bearings get eaten from mud and muddy water runs, bushings are more forgiving usually.

Mike

86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00 88 Cherokee 235 BFG AT's

mace wrote:

Reply to
Mike Romain

Ummm...where is the original thread?

Reply to
Joseph Pribe

Sorry. Didn't include the original text in my posts. It saves gobs of bandwidth. I don't think I have it anymore. You'll have to reset your browser to download past posts.:(

//Ummm...where is the original thread?

Reply to
Drink

Reply to
L.W.(ßill)

A: Send an email to snipped-for-privacy@yahoogroups.com It will bounce with an explanation of how to sign up. Quick rundown: Whichever fuel injection system you are using, you will need to use the matching system's flywheel (Renix '87 to 08/90 and HO 09/90 to '03) High compression ratio is the usual problem, which requires premium gas. I'm building mine to run propane or natural gas, which are 130 octane or higher.

Reply to
Jim Blair

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