Posted by NCWayne on June 10, 2014 at 21:52:23 from (173.188.169.54):
In Reply to: engine overhaul posted by Nick167 on June 10, 2014 at 12:56:33:
Given that I work on equipment for a living, and have built many engines over the years, take everything said thus far to heart as the replies so far are right on.
That said I read your reply to one of the posts where you said you can see space between the piston and the cylinder wall "so you think the rings are bad". Now you will always see a little bit of space between the piston and the cylinder wall. If it is excessive, then rings will not do you any good as filling up that gap isn"t really their job. I say that because the gap is "filled" by having a correct sized piston in the bore. In other words if the bore is worn to the point that it"s .010, .020. etc oversized, then your going to have to have it bored correctly and install oversized pistons. With the correct sized pistons in a correct size bore, then a set of correctly oversized rings will then seal the remaining space between the piston and cylinder wall. Expecting a set of standard rings to seal in a bore that is oversized is doing nothing but asking for trouble.......Ask a customer of mine that demanded I rebuild his engine using standard pistons and rings, without having it bored oversized like it needed to be, against my recommendation. he can tell you for a fact that it costs more than twice as much to build one twice as it does to build one once, the right way.
Just remember, the same holds true for the main and rod bearings. If the crank is worn, it will have to be ground to a standard undersize, and then the proper oversized bearings used to get a correct fit. If you don"t do that while in there, anything else you do is just wasted time and money.
Beyond that, good luck, and if you run into anything you can always ask on here.....someone will know the answer to your question.
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