supadave
NAXJA Forum User
- Location
- Napoleonville, LA
Hey, I'm a noob here. I searched around a good bit trying to find a wright up or thread about changing the Main and Rod bearings in a 4.0 but I had no success.
So I have a 92 MJ with the 4.0 HO. It has 8 quintillion miles, burns little to NO oil but it has very little oil pressure, like around 7psi at highway speeds. Once I figured this out, I parked it and was in denial for a while that its probably the gauge or the sender. But I hooked it up to a mechanical gauge...and it confirmed my fears. So I'm off to change the bearings.
I've changed the RMS a while back, so I won't be doing that. But I will be changing the Rod and Main bearings, oil pump, timing chain, and water pump (including all required gaskets).
Now, I'm planning on changing this stuff with the engine in the truck. Will I have to drop the crank, and if so, do I have to drop the trans to do that????
thanks in advance for any help!
So I have a 92 MJ with the 4.0 HO. It has 8 quintillion miles, burns little to NO oil but it has very little oil pressure, like around 7psi at highway speeds. Once I figured this out, I parked it and was in denial for a while that its probably the gauge or the sender. But I hooked it up to a mechanical gauge...and it confirmed my fears. So I'm off to change the bearings.
I've changed the RMS a while back, so I won't be doing that. But I will be changing the Rod and Main bearings, oil pump, timing chain, and water pump (including all required gaskets).
Now, I'm planning on changing this stuff with the engine in the truck. Will I have to drop the crank, and if so, do I have to drop the trans to do that????
thanks in advance for any help!