Quote:
Originally Posted by volosong
Did they replace the valve guide seals? That's my guess. Pretty simple if you have the right tools. The bottom end of these M103 engines are pretty indestructible and should go twice what you have before having to do a ring job.
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yes, seals as well as some guides were replaced. One guess may be that the intake and exahust seals were reversed but I think it is unlikely that this would be the case on every cylinder.