| coup | -- 04-18-2014 @ 6:12 PM |
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Can someone tell me how far a 221 32 - 34 block be bored. Also how far if it is to be sleeved. Thanks Neil
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| JM | -- 04-19-2014 @ 5:49 AM |
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The flathead engine building gurus on Fordbarn tell us that + 0.060 is the limit on the early 221 engine blocks, prior to '37. No idea on sleeving. If you post this question on Fordbarn, someone will let you know. John
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| TomO | -- 04-19-2014 @ 7:59 AM |
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I would not sleeve an early block to achieve a bore larger than .062 oversize. You will have overheating problems. Tom
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| David J | -- 04-19-2014 @ 11:52 AM |
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I have a 33 and a 34 with .060 33-34 blocks in them and they work fine . This message was edited by David J on 4-19-14 @ 11:53 AM
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| supereal | -- 04-19-2014 @ 8:24 PM |
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The overbore depends on the sleeve size outer diameter, the usual largest being .060. Any larger has to special ordered from a vendor such as Mahle. Same is true of pistons and rings. It is very difficult to' bore old engines as they more often than not will have a sand hole from a core shift when made. At our shop, we do lots of boring. We fill the water jacket with a special material prior to boring to support the cylinder walls so the finish will be possible with the hone.
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