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1966 CB77 Piston question

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MGB Driver
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Joined: Wed Nov 01, 2023 7:48 pm

1966 CB77 Piston question

Post by MGB Driver » Mon Nov 06, 2023 4:47 pm

I've found a couple of .25 oversized pistons on flea-bay for my '66 CB77 engine, but they're "domed", unlike my original flat_top pistons....will a domed piston work ? Thanks in advanced!

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Tim Allman
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Joined: Tue Dec 02, 2014 9:25 am
Location: Guelph, Ontario, Canada

Re: 1966 CB77 Piston question

Post by Tim Allman » Tue Nov 07, 2023 12:38 pm

All I have ever seen in a CB72/77 is domed pistons. In fact, I have never seen flat pistons in one of these bikes and a look at my copy of Bill Silver's guides to these bikes turns up nothing.

Some pictures would be very helpful. I doubt these are original pistons but I would love to see them and read comments from other who know more than I do.

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