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Re: c113 (or late C-123)engine boring
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Posted by Stan(VA). on October 02, 2005 at 18:22:13 from (4.248.56.61):
In Reply to: Re: c113 engine boring posted by Charles McNelly III on October 01, 2005 at 18:34:45:
Yes, I"ve had two of the C-113 (or late C-123) blocks bored out to accept the 3-1/4" overbore kits. None of the standard automotive machine shops I"ve talked to have the ability to open up the O-ring slot at the same time so I ended up spec"ing out thinner o-rings and use two o-rings for each sleeve. If you have trouble getting the right ones, email me. I"ve already gone through all the T&E and helped one other guy on here last year with them. I"ve heard of pullers that go quite a bit larger but not without alot of custom machine work and constant problems with leaks after they try to seal the sleeves up with hardblock (or other epoxy). I wouldn"t recommend trying to turn down the sleeves on an 3-1/4" overbore kit to fit in this motor. You can do the math; 3-5/16" OD at O-ring on sleeve less a 3-1/4" piston bore = 1/16", divided by 2 leaves only 1/32" of material in your sleeve. The original setup was (3-5/16" - 3") / 2 = 5/32" in the sleeve; the overbore kit gives (3-5/16 - 3-1/8) / 2 = 3/32" in the sleeve. That"s as thin as I want to try on the sleeves. Stan(VA).
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