Green Mesa XJ Posted February 10, 2018 Share Posted February 10, 2018 There’s a 2.5 5speed 4x4 86 XJ near by for sale not running. And I’m tempted. I know it’s probably the Renix so maybe the troubleshooting will get it back to running. Being 5speed it should have 4.10 gears. But the np207 and ax5. I could make it a 2.8 v6 or some bastardization there in. But I thought the 2.5 engine was supposed to be pretty good. Little sister to the 4.0 and all of that. For the sake of curiosity if the engine were kaput what year 2.5 block or engine would work? I know the 4.0 and newer 3.7 v6 have a much wider interchange than the parts catalogues say. Sent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
Jeep Driver Posted February 10, 2018 Share Posted February 10, 2018 Every year is exactly the same with the exception of the fuel pump mount, later models are not milled out. And, IIRC, the 84 models had 7/16 head bolts and all others had 1/2 Link to comment Share on other sites More sharing options...
Jeep Driver Posted February 10, 2018 Share Posted February 10, 2018 BTW, I've got a perfectly good 2.5 block and many other parts that I cannot even give away. If you were closer......... Link to comment Share on other sites More sharing options...
Green Mesa XJ Posted February 10, 2018 Author Share Posted February 10, 2018 Cool. So 84 to 90? 95?Sent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
Pete M Posted February 10, 2018 Share Posted February 10, 2018 more like 84-2001 TJs and YJs too. unless the owner has done a compression test, chances are slim the actual block is the problem. Link to comment Share on other sites More sharing options...
Jeep Driver Posted February 10, 2018 Share Posted February 10, 2018 Blocks and heads are all the same. Later heads may or may not have the temp sender in the back, those can be drilled at tapped. Link to comment Share on other sites More sharing options...
Jeep Driver Posted February 10, 2018 Share Posted February 10, 2018 Last thing here- The snout on Renix cranks are longer. You can us a later crank with a Renix as I have done but you cannot use a Renix crank with the later accessories. Later accessories are closer to the block. Link to comment Share on other sites More sharing options...
Green Mesa XJ Posted February 10, 2018 Author Share Posted February 10, 2018 Thanks Pete M and Jeep Driver.I’m just trying to figure out worst case costs and parts availability, which is tremendous if any 2.5 is a contender. My bet would be the Renix troubleshooting would get it running. I doubt the 2.5 is bad. Biggest obstacle is rolling her eyes at me for wanting another Jeep and a project Jeep at that. Probably should have waited until after the 14th to mention it. Sent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
dasbulliwagen Posted February 13, 2018 Share Posted February 13, 2018 On 2/10/2018 at 3:12 PM, Pete M said: more like 84-2001 TJs and YJs too. unless the owner has done a compression test, chances are slim the actual block is the problem. Don't forget the Dodge Dakota! Link to comment Share on other sites More sharing options...
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