88 cherokee 2.5l
Hi I have a 2.5l cherokee xj. I was wondering would it kill the engine to out 33" tires on it?
Originally Posted by 7179CJ5 View Post
The different transmissions have different gear ratios of their own necessitating different rear axle gear ratios. And unless the torque converter of an auto is locked, not all engine power is transferred directly through the transmission.
This calculator might be extremely handy for you. http://www.manoian.net/jeep/gear_ratio_calculator.html
I don't have the exact dimensions of the 2.5 and no time to do the math right now anyway, but I'd say that your ideal cruising RPM should be at 2500; probably about 3000 RPM more likely. Here's another link you might find useful that I just scrounged-up for you: http://www.jedi.com/obiwan/jeep/2.5Lpower.html
This is just based on my quick educated guesswork, so I might be off a little, but if I were you, I think regearing to 4.56 give or take. Maybe even 4.88 if your big into wheeling.
Asking the YJ guys might get you some more wisdom as many of them had/have your 2.5 and AX5 drivetrain.
P.S. Listing all other mods you're running can be very helpful.
Build Thread -- http://www.jeepforum.com/forum/f177/whats-chrokeese-build-thread-2525690/
bout time we got another 2.5 xj on here. we are few and far between. i know there are some yj's in my area running 35's with the 2.5(don't ask me how, mine does good to spin the 235's). the yj guys would be more knowledgeable since they have more 2.5's the most xj guys
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