Built 2.5
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Joined: Aug 2009
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From: McCall Idaho!
Year: 97
Model: Grand Cherokee
Engine: 5.2
Soo yea what do you guys think you could turn out of a 2.5 built Cam pistons ect....
Horse power torque Mileage after all that ?
Horse power torque Mileage after all that ?
Most people don't like that it doesn't have much power. I don't mind it at all personally. I've got two 4.0 Jeeps and a 2.5 Jeep (and they're all Renix Jeeps too, which most people don't like), and I'd rather drive my 2.5 XJ than either of my 4.0's. But that's just me.
I wouldn't build up a 2.5 though, accept it for what it is or swap in something more powerful like a V8.
I wouldn't build up a 2.5 though, accept it for what it is or swap in something more powerful like a V8.
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CF Veteran
Joined: Dec 2011
Posts: 4,006
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From: Pasadena, MD
Year: 1987
Model: Wagoneer
Engine: Renix 4.0
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Joined: Apr 2009
Posts: 18,786
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From: CT.
Year: 88
Model: Comanche (MJ)
Engine: 4.0 HO
Senior Member
Joined: Nov 2010
Posts: 711
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From: Benton, KY
Year: 1991
Model: Cherokee
Engine: 4.0
A lot of people diss the 2.5, even more diss the 2.8... Personally my favorite engine that was ever available in these is the 2.8... With 30" tires (actual size, not listed size), my old 2.8 with the ax5 manual had more oomph than my current 4.0/automatic.
People say the 2.8 isn't reliable, but like any engine, if not maintained, it will die. The almighty 4.0 included.
I am constantly on the lookout for a 2.8/ax5 or 2.5/ax5 2 door XJ.
People say the 2.8 isn't reliable, but like any engine, if not maintained, it will die. The almighty 4.0 included.
I am constantly on the lookout for a 2.8/ax5 or 2.5/ax5 2 door XJ.
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Joined: Nov 2010
Posts: 711
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From: Benton, KY
Year: 1991
Model: Cherokee
Engine: 4.0
My 2.8 refused to give up. I locked it up tight as a drum one day trying to get it out of a mudhole, got it out of the hole, pulled it down the road behind my old beater altima and let off the clutch in second gear at 40mph. Rear tires locked up for about half a second and the then motor broke loose and fired up. changed the oil and beat on it some more and never had another problem until I ended up having to get rid of it due to losing storage and scrapped it. Worst-mistake-ever!
I've only ever seen 3 2.8L XJs outside of junkyards. 3/4 of the ones I see in junkyards have visible engine damage (seen several with holes in the block)
I also swear against that engine after my mom's old train wreck of a s10 blazer. She got rid of it when I was like 5 and I still have memories of the most miserable road trips ever with that ****box breaking down on nearly a daily basis.
And about the 2.5L roasting tires-BS. My friend's XJ has one and it can spin for a second if he dumps the clutch off the rev limiter on wet smooth concrete. otherwise a great little engine though
I also swear against that engine after my mom's old train wreck of a s10 blazer. She got rid of it when I was like 5 and I still have memories of the most miserable road trips ever with that ****box breaking down on nearly a daily basis.
And about the 2.5L roasting tires-BS. My friend's XJ has one and it can spin for a second if he dumps the clutch off the rev limiter on wet smooth concrete. otherwise a great little engine though


