Matt L

Member
Decided to start the process of fixing my 630

Tear down !!!

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I found less then I actually expected. Didn't see and cracks in the head or the block so far. Head gasket doesnt look blown- its like a hour old is all.
Did find 3 loose headbolts and the valve cover stud is welded back together.
#1 sleeve sits a lil low in the block.
It has stains in it and looks cracked, kinda hard to tell tho... The sleeves are gouged all one the left side for some reason. Might be broken rings or misinstalled then it was rebuilt.
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Im gonna pull apart the head this week and mag it for cracks. Probably gonna have it pressure tested too. Not sure if the injector cups leak. I did find some water in em, but that might be from me steam cleaning it.
After that Im gonna port the head and do a 3 angle valve job.


Hopefully the block isnt cracked on the bottom......
 
were 3 loose head bolts in a group ????, was it over #1 ??..if it were mine I would plane the head .,, it may be warped ???,, is water getting in oil ???
 
Water was getting in the oil long before I got it. They were loose around #1. The head gasket is a hour old or so.


Head was resurfaced when the engine was rebuilt.
 
(quoted from post at 21:09:00 04/15/13) Water was getting in the oil long before I got it. They were loose around #1. The head gasket is a hour old or so.


Head was resurfaced when the engine was rebuilt.

If the sleeve is low that indicates the block is eroded and must be repaired. The block should be planed a few thou and the block bored to take the later wide flanged sleeves. This should be done by a competent machine shop and a bare minimum removed as piston to valve clearance can be affected. I have done many of them.

mEl
 

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