Gr8Dain's 4.0/aw4 swap from a 97 XJ
- Thread starter gr8dain
- Start date
californiajeeping
Member
- City
- auburn
- State
- ca
Put new pistons and bearings in. It's so far apart I wouldn't hesitate. The early 4.0s always end up with piston slap I've owned 4 of them. Plus good time to do a cheap cam and oil pump upgrade.
- City
- Dexter
- State
- MI
I’m in agreement here. By the time you have it down this far, why not just make it right? If it were in the vehicle, that’s one thing, but you have it loose and are already taking parts to a machine shop.
- City
- Ashburn
- State
- VA
I was thinking about a new oil pump anyway. And I have been thinking about tearing the bottom down too. Ugh. It would be the right thing to do. But grrrr.
californiajeeping
Member
- City
- auburn
- State
- ca
Don't be scared you can slap bearings in and STD size pistons and rings with no machine work as long as nothing is spun and the cranks smooth. It will be fine people have done it for years.machine shops are hit or miss. With relatively low mileage you should be fine. Just watch the taper I'm the bores on the block.
Belizeit
CJ-8 Member
- City
- River Ridge
- State
- La
Do it all new like me. Engine is finished 10 months and still sitting on the stand.
- City
- Ashburn
- State
- VA
I just placed an order with Rock Auto for a bunch of internal motor parts. Lifter, rod bearings, rings, oil pump kit, timing chain set, ignition coil, exhaust manifold, YJ accelerator cable, and TJ power steering pressure line. Still on the list are the poly motor mounts and tranny mount, then the transmission cooler and soft lines. I am looking forward to pulling the bottom apart and cleaning all of this. Just hitting the block with the wire brush made a huge mess in my garage.
- City
- Ashburn
- State
- VA
And I picked up this air intake for a TJ from a friend for free. Wondering if anyone who has doe this know what I need in order to attach it to the intake. I assume there is a rubber or plastic piece that gors between this tube and the intake. Does anyone have a picture?
FLCJ8
Legacy Registered User
- City
- Palm Bay
- State
- FL
I don't have first hand experience, but it looks like this is what you have.
https://static.thiecommerce.com/ass...311-inst/8cd65960bfa2ff8d9553a6066d72a58c.pdf
There is installation instructions and a parts list.
AEM does sell the hose couplers on their site, not sure about the TB spacer.
- City
- Ashburn
- State
- VA
Thanks. Not sure why I did not look at their site. I guess I assumed it was part of the stock set up and it was just missing from mine when I grabbed the motor.
- City
- Ashburn
- State
- VA
Removed the timing chain and pistons from the 4.0. Next step is to clean this beast. Then hone the cylinders. I think I should paint it. AMC blue?
I also took the 3a out for a drive since I had to pull it out of the garage to make space.
I also took the 3a out for a drive since I had to pull it out of the garage to make space.
Belizeit
CJ-8 Member
- City
- River Ridge
- State
- La
Maybe paint if you can get it clean enough. I thought about it when I was doing mine last year, but in the end mine wasn't painted from the factory, and I know they get dirty so I figured what good is a dirty painted engine. I've always been more about functionality than looks. Kinda like the paint, it has good patina for 36 years old.
- City
- Olathe
- State
- KS
How do the cylinder walls look?
- City
- Ashburn
- State
- VA
pretty good. The pics make it look shiny, but they still have the cross hatching. So I am not going to bore the block.
- City
- Ashburn
- State
- VA
i know. I need to get this done and off of the stand. At least I used grade 8 bolts.