CB77 std piston rings

pemdoc65 · Post by **pemdoc65** » Wed Jul 26, 2017 8:48 pm

Some of those marks in the cylinders look a bit deep for a honing to take care of. I would look for some S3 pistons and rings and get the cylinders bored. Or you can find a used set of cylinders on ebay that are can be bored to 0.5 over and reuse your pistons with new rings.

LOUD MOUSE · Post by **LOUD MOUSE** » Thu Jul 27, 2017 12:23 am

Bore to at least 3rd.
New pistons and rings. ................lm

Merz64cb77 wrote:here are some pictures of the 0.50 piston, rings and cylinder bores. One cylinder and piston is worse than the other. would you recommend that I hone the rust off and re-use the existing pistons and just purchase new 0.50 rings or overbore to a 3rd or 4th and buy all new from Tim at Classic honda restoration

Merz64cb77 · Post by **Merz64cb77** » Thu Jul 27, 2017 4:10 am

Can I re use my piston pins and clips with 3rd or 4th over pistons?

LOUD MOUSE · Post by **LOUD MOUSE** » Thu Jul 27, 2017 5:40 am

You can use the clips unless you destroy them.
If you can feel/see a difference in diameter at the rod location you may want to replace them.
Also check the rod ends for wear/grooves. ..............lm

Merz64cb77 wrote:Can I re use my piston pins and clips with 3rd or 4th over pistons?

Merz64cb77 · Post by **Merz64cb77** » Thu Jul 27, 2017 6:31 pm

Ok will do thanks for the info and advice LM.

rrietman · Post by **rrietman** » Fri Jul 28, 2017 12:18 am

you are going to need a valve job as well. makes a huge difference in tuning.
Good luck
Randy

Merz64cb77 · Post by **Merz64cb77** » Fri Jul 28, 2017 4:30 am

Hi randy
What is involved in completing a proper valve job?

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