DIY Car Maintenance

[Thomas More]

Just wait until he hears I'm planning on reusing the head bolts .

Ring set, rod bearings, high volume oil pump, and master gasket/seal kit was about $200 including shipping.

It's already driven to the moon, let's see if this $200 engine refresh can get it back to Earth.

Just gaskets, rings, and valve job will do wonders.

 

[mountainaire]

My man that's a clean main bearing for 250k. Some would say it's still new. Here are some example of connecting rod bearing and main bearings that are smoked. You can see the deamination od then bearings in the first photo and the scoring on the second photo. We have pulled bearing out of these engines that are so thin the will snap under light pressure. If you replace the rod bearings look at your crank there should be a code on it (probably on first counterweight by crank pulley) take a photo of it is your journal codes you will need it for your con rod bearings.

I believe you could get away with reusing your oil pump long as there is no sludge in it. Just blast brake cleaner into it for let it sit for a while. And as always take your time and good luck I know you can do it.

Make sure you leave those head bolts in from the time you remove them to the time you install them. I would recommend an angle torque wrench but it's not necessary.

Yeah, everything I've read and heard indicates that the mains last forever in these engines. Makes sense when you think about it, there's seven main bearings, 3 more than a V8, that's a lot of bearing surface in an engine making not very much power.

Rings and rod bearings showed up today. Old school cast iron 5/64". For the rod bearings I didn't look at any journal codes, I just went with standard size replacements. I made sure to get tri-metal bearings instead of the aluminum ones they're trying to push now.

 

[SeekingTruth]

Since no one here is yet tired of me talking about my love for Honda ill tell yall a recently story that happened to me. I was picking my daughter up from school and my 05 pilot died coming to a stop. Could not start it or anything. Towed it to work and found the timing belt broke and wrapped around the crankshaft cog. We'll the biggest fear was that since they are interference motors that a valve bent and I would have to replace a head or more. I was able to pry off the cog and belt and re time the cams. Put a new belt on and would you believe it she ran no valves bent. The J series is a monster that has to be massively abused before it fails.

Had a late 90s Honda Passport and this exact thing happened to me.

 

[Gazeebo]

Yeah, everything I've read and heard indicates that the mains last forever in these engines. Makes sense when you think about it, there's seven main bearings, 3 more than a V8, that's a lot of bearing surface in an engine making not very much power.

Rings and rod bearings showed up today. Old school cast iron 5/64". For the rod bearings I didn't look at any journal codes, I just went with standard size replacements. I made sure to get tri-metal bearings instead of the aluminum ones they're trying to push now.

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I would recommend looking at your crankshaft codes before you install those bearings. From the amounts of bearing I've replaced there are 5 different color codes that differentiate In sizes ranging from blank to pink. I don't speak for jeep but the sizes do matter at the end of the day.

If your crank has thrust bearing i always use a ditty from Ace Ventura "laces out".

 

[Gazeebo]

Had a late 90s Honda Passport and this exact thing happened to me.

The Honda passport from the 90s is a Frankenstein. Everything is Isuzu besides the engine and transmission. I hope you were able to fix your issue I was.

 

[mountainaire]

I would recommend looking at your crankshaft codes before you install those bearings. From the amounts of bearing I've replaced there are 5 different color codes that differentiate In sizes ranging from blank to pink. I don't speak for jeep but the sizes do matter at the end of the day.

If your crank has thrust bearing i always use a ditty from Ace Ventura "laces out".

Good to know. After some more research it does seem that some engines were shipped with 0.001 undersized bearings due to manufacturing variances in crank machining.

I'll look for that journal code and verify the sizing on the backing of the old bearings to make sure before installing the new ones. Hopefully I'm lucky and they're all standard so I don't have to re-order.