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ACmutt 
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 Topic: WTB 226 high compression pistons
Posted: 14 Dec 2022 at 9:55pm |
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Looking for 4 1/8 high compression pistons for a 226. Wonder if anybody makes them? Would like to get compression around 250.
Edited by ACmutt - 14 Dec 2022 at 10:02pm
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DrAllis
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Posted: 15 Dec 2022 at 10:18am |
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Used to be if you found a set of M & W's from a WC/WD (SP46 kit) they were the ticket. So, if by chance you can get a modern day set of 4 1/8" for a WC/WD and use them with the WD-45 crankshaft, you should have something higher than average. Compression height (piston pin center to piston top) is the key.
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IBWD MIke
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Posted: 16 Dec 2022 at 9:45am |
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I have a set of 4&1/8" flat tops. Comparing them to an M&W, the head of the piston is a little lower but they don't have that massive bowl. I can send pics if you like. I believe they are JCC brand? That is the only marking on them.
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Charlie175
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Posted: 16 Dec 2022 at 11:46am |
These are SK156 Flat top pistons compared to standard D17 spec pistons with wristpin lined up.
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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Charlie175
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Posted: 16 Dec 2022 at 11:47am |
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I have to run 93 octane with those
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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DrAllis
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Posted: 16 Dec 2022 at 10:17pm |
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Did you ever run a cranking compression test ?? like maybe 200 psi ??
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ACmutt
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Posted: 17 Dec 2022 at 8:23am |
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Thanks, if you could send me a pic that would be good. Do you want to sell them, if so what is the price.
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steve fischer
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Posted: 17 Dec 2022 at 1:10pm |
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should have some used ap46 m&w
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ACmutt
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Posted: 17 Dec 2022 at 1:54pm |
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Steve I would be interested in those. PM me with price? Will you ship?
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DrAllis
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Posted: 18 Dec 2022 at 3:02pm |
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WARNING: SP-46 M & W brand pistons will require removing .150" off the piston tops to avoid hitting the cylinder head !! You measure them to verify this.
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ACmutt
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Posted: 18 Dec 2022 at 5:28pm |
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Thanks for the input Dr, I appreciate your help.
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