Honda CA77 Ring Gap

pcnss123 · Post by **pcnss123** » Thu Dec 20, 2012 7:51 am

Hi everybody! i am currently restoring a 1963 ca77, i have stripped the motor due to a blown head gasket.

Could anybody tell me what the end ring gap should be for a heahly set of rings, as im struggling to find any info

Any help would be appricated!

conbs · Post by **conbs** » Thu Dec 20, 2012 10:45 am

Shop manual says compression .15-.35 mm and oil .1 -.3 mm.

pcnss123 · Post by **pcnss123** » Thu Dec 20, 2012 10:58 am

Thanks for your reply!

Could you explain what that means at all?

Many thanks

G-Man · Post by **G-Man** » Thu Dec 20, 2012 5:21 pm

they are the values for the two compression rings and the oil control ring.

G

pcnss123 · Post by **pcnss123** » Fri Dec 21, 2012 7:39 am

Thanks a lot for your help! Turns out the rings are really worn so I have some new ones on the way!

Thanks again

conbs · Post by **conbs** » Fri Dec 21, 2012 10:11 am

How do your pistons and cylinders spec out?

pcnss123 · Post by **pcnss123** » Sun Dec 23, 2012 9:16 am

This ring gap turned out to be a massive 2mm! I can only get 0.12 between the piston and barrel, so hopefully just new rings

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