89 MJ Posted August 25, 2019 Share Posted August 25, 2019 What needs to be changed in order to put a 91/95 engine with the HO fuel injection into a Renix Jeep? Thanks Link to comment Share on other sites More sharing options...
jdog Posted August 25, 2019 Share Posted August 25, 2019 What exactly are you wanting to do? The blocks are the same, it's just the intake and exhaust manifold that is different. If you are just looking to put the motor in to get it going swap the old intake and exhaust manifold from the old one. If your wanting to use the new exhaust and intake I believe you would have to change the Wiring the exhaust down pipe and computer as well. Someone else can correct me if I'm incorrect. Stock 1988 swb 4.0 ax15 np 231. Link to comment Share on other sites More sharing options...
Limeyjeeper Posted August 25, 2019 Share Posted August 25, 2019 You will need a complete HO engine wiring harness, PDC and computer, including bracket, which will have to be matched to the 1989 dash harness, which is a lot of work. It is not plug and play. Been there. Just went through trying to splice an HO engine harness to a non HO dash harness, It is a major project. All the HO sensors, and plugs are different. It can be done but as jdog said a block swap would be easier. Link to comment Share on other sites More sharing options...
89 MJ Posted August 25, 2019 Author Share Posted August 25, 2019 5 hours ago, jdog said: What exactly are you wanting to do? The blocks are the same, it's just the intake and exhaust manifold that is different. If you are just looking to put the motor in to get it going swap the old intake and exhaust manifold from the old one. If your wanting to use the new exhaust and intake I believe you would have to change the Wiring the exhaust down pipe and computer as well. Someone else can correct me if I'm incorrect. Stock 1988 swb 4.0 ax15 np 231. 5 hours ago, Limeyjeeper said: You will need a complete HO engine wiring harness, PDC and computer, including bracket, which will have to be matched to the 1989 dash harness, which is a lot of work. It is not plug and play. Been there. Just went through trying to splice an HO engine harness to a non HO dash harness, It is a major project. All the HO sensors, and plugs are different. It can be done but as jdog said a block swap would be easier. Sounds good! Thanks for the help! Link to comment Share on other sites More sharing options...
cruiser54 Posted August 26, 2019 Share Posted August 26, 2019 HUGE undertaking for no real benefit. Link to comment Share on other sites More sharing options...
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