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Higher comp pistons for 2.5 4cyl??


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And the comp ratio, I thought that I read somewhere that the 88's had comp in the 8's.  Must have missed that one.

The 2.5L is 9.1:1 for the later, Chrysler versions, 9.2:1 for the AMC carbed and Renix versions. Not worth the work and expense to bump it to 9.5:1, and probably not worth even going to 10:1.

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Supercharging the 4.0L or 2.5L is Super easy with Junkyard parts as long as you don't have or want to keep your A/C...

 

The Rimmer kit is Very reasonable as it uses a Reconditioned SC or you can just buy the mounting bracket kit and grab a JY one yourself...

 

I use the Eaton M90 which is far easier to adapt to anything over the M62...

 

I have also sis a custom one off M90 SC into an 05 Jeep TJ Rubicon over 6 years ago before there was an fuel management options like there are today...

 

I will be installing a M90 onto my 4.7L stroker in the spring as I want to break the engine in for a few months before adding the SC...

 

Also had a Friend with a 4 banger 97 TJ who added a custom Turbo and its still going today more then 8 years now so its possible to make a 2.5 last

with a turbo or SC...

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