[A1Judge]

I got my engine apart today and really found nothing that would cause a knock, tap... Except for the left side motor mount was loose at the block. I wonder if it caused a vibration or rattling that I was hearing.

Anyway, here is what the cylinders look like...

another shot:



Here is a typical rod bearing, they all looked like there was some dirt in there and scratched them..



Here is the thrust bearing..



And finally the crank.. I do feel ever so slight scratches with my fingernail, maybe just a polishing?




Now that it is apart, I will still have the forged rods installed and the rotating assembly balanced. Can I get away with the same rings or install new ones? I think I already asked that question in a previous post, just want to be sure.

Also, since the block is realy in good shape, at least I think it is based on what I see. Can I pressure wash it using soap and water? Then blow it out with compressed air? I just want to be sure there are no foreign particles in it when I reassemble?

Thanks

Don



restored a 70 Judge at: http://home.rochester.rr.com/dchapman

[A1Judge]

I got my engine apart today and really found nothing that would cause a knock, tap... Except for the left side motor mount was loose at the block. I wonder if it caused a vibration or rattling that I was hearing.

Anyway, here is what the cylinders look like...

another shot:



Here is a typical rod bearing, they all looked like there was some dirt in there and scratched them..



Here is the thrust bearing..



And finally the crank.. I do feel ever so slight scratches with my fingernail, maybe just a polishing?




Now that it is apart, I will still have the forged rods installed and the rotating assembly balanced. Can I get away with the same rings or install new ones? I think I already asked that question in a previous post, just want to be sure.

Also, since the block is realy in good shape, at least I think it is based on what I see. Can I pressure wash it using soap and water? Then blow it out with compressed air? I just want to be sure there are no foreign particles in it when I reassemble?

Thanks

Don



restored a 70 Judge at: http://home.rochester.rr.com/dchapman

[Bartman]

I'd pull the oil galley plugs and just wash it with hot soapy water after a quick honing. Replace the rings and bearings. Measure the crank and polish.
Check the piston skirts very close because it only takes a small crack to cause a knocking sound. Also measure your piston to wall clearance. If you change the pistons I would have the block rehoned with torque plates. Check with your machinist on what you should buy.
One of the main things is to make sure all of your clearances are correct because thats where a lot of knocks come from.
Bartman

Ponies run but Birds fly

[Tom Vaught]

It looks to me like the engine was getting some metal debris but the bearings were trying to do their job and were able to eat most of it.

I would use the pressure washer to blast away the initial grit in the engine with all of the oil plugs removed. I would then mount it on an engine
stand and use gun brushes to clean each oil passage and a stiff car wash bristle brush (not
metal) to clean the whole block and bores again.

I would then inspect the block for any wear at the tops of the bores, look for cracks everywhere
on the block, and blow dry and oil the metal surfaces. The bores may require a hone job. If
so you will have to clean the block again after the work.

Stay in touch on your work on the block with the
people on the board and we can walk you through the whole process. Tom V.

[larry davis]

They pretty much covered it.



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I Misus Rash'!

[A1Judge]

Thanks guys,

I get to the washing of the block next weekend. For now, I sprayed everything with WD40 and wrapped it up in plastic bags.

I will take the rotating assembly in to the machine shop tomorrow to have everything mic'd and have the forged rods installed.

My neighbor has a presure washer I can use. I'll take the oil plugs out, pressure wash it, then use the gun brushes, clean the whole thing out and blow dry and lube for protection.

I'll keep you posted.

Don



restored a 70 Judge at: http://home.rochester.rr.com/dchapman

[67cruiser]

While your this far down, basically to the block,
run a finishing tap down on all your head bolts holes make sure all depri is out to, diffantly would remove oil galley plugs for sure!! great idea!!

[Malky]

Check cam lobes and lifters for wear - they could be cause of debris wear you seem to be having. Also oil pump.

[wholio]

While you are apart you may as well change you cam bearings since it looks as though some junk has gone through it.

[A1Judge]

Well, I have a brand new in the box Melling M-54D-S oil pump that I will be using instead of putting the old one back in.

I cannot detect anything wrong with the cam bearings. They look like new with no indications that any grit ever made it that far.

I was hoping not to have to take the block in as it only has 300 miles on it since the original build.

Can I use a glaze breaker, the abrasive balls on the ends of wire spokes to restore the cross hatch? Then use new rings...

If not, then I guess I'll have to bite the bullet and take the block in.



restored a 70 Judge at: http://home.rochester.rr.com/dchapman