2.8L Ceased Production

[Comanche_Fanatic]

86 was the first year they made the manches and it had the 2.8L chevy motor in it. Next year it was subbed with the 4.0L inline six by AMC

 

Why? Was the chevy motor $#!&?

[onlyinajeep726]

Yes, the early V6 2.8L is a crappy, unreliable engine. AMC knew that and replaced it in favor of the more reliable, stronger I6 4.0L. Now, with that said, if you ever decide to replace that 2.8L, you have a few options; some simple and some that require more work. There is a thread on just this on this very forum. Here's the link. "3.1,3.4 Swap For 2.8V6"

 

You could also pull a 4.0L and the tranny combo from an XJ, along with the wiring harness and convert that MJ to what Jeep should have put in it from the beginning.

 

On a side note, the Chevy 2.8L put out less HP than the AMC I4 that also came in the truck. Yes, there's a reason no one wants the 2.8L lol.

[Comanche_Fanatic]

Thought so. Now i gotta find a. AX15 and a 4.0. More work coming up

[Lee21490]

Yes, the early V6 2.8L is a crappy, unreliable engine. AMC knew that and replaced it in favor of the more reliable, stronger I6 4.0L. Now, with that said, if you ever decide to replace that 2.8L, you have a few options; some simple and some that require more work. There is a thread on just this on this very forum. Here's the link. "3.1,3.4 Swap For 2.8V6"

 

You could also pull a 4.0L and the tranny combo from an XJ, along with the wiring harness and convert that MJ to what Jeep should have put in it from the beginning.

 

On a side note, the Chevy 2.8L put out less HP than the AMC I4 that also came in the truck. Yes, there's a reason no one wants the 2.8L lol.

 

The I4's also had better gas milage too lol

 

My 2.8 leaked so much oil, Used to drive me crazy.

 

Still have a BIG oil pile in the gravel driveway here as a souveneir of once owning a 2.8l.