Mike M..piston update

RandyB(MI) · Feb 3, 2016

Hi Mike. Had those m/w pistons measured again. Then I found the actual figure the first guy wrote on the box. They are 4.720 for a .045 over bore which as you said would be 4.732 for a clearance of .012 which works out just right. Thanks again for clearing up my brain toot. RB

Mike M · Feb 4, 2016

Now that all sounds like I remember it. You will be good to go if you happen to have an old worn out std. bore.
Now believe it or not ( I could hardly believe it at the time )I rebuilt one with those pistons in it and it was dynoing about 35hp !

woodsnwater · Feb 4, 2016

35 hp? In an unstyled A? Sorry I missed the first part.

Mike M · Feb 4, 2016

These are late B pistons made by M & W add powers so they do perk them up a little.

Mike M..piston update

RandyB(MI)

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Mike M

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woodsnwater

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Mike M

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