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Discussion Topic:
how far can a 32 to 34 block be bored
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supereal |
04-19-2014 @ 8:24 PM
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Senior
Posts: 6819
Joined: Oct 2009
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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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David J |
04-19-2014 @ 11:52 AM
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New Member
Posts: 136
Joined: Jan 2014
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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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TomO |
04-19-2014 @ 7:59 AM
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Senior
Posts: 7264
Joined: Oct 2009
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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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JM |
04-19-2014 @ 5:49 AM
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Senior
Posts: 823
Joined: Oct 2009
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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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coup |
04-18-2014 @ 6:12 PM
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Member
Posts: 71
Joined: Sep 2011
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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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