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LOUD MOUSE · Post by **LOUD MOUSE** » Sun Dec 21, 2014 12:22 pm

Ya have the nut wrong side out. ..............lm

cleg wrote:Thanks guys. I ended up using a die grinder to get to some decent threads.
I have the left side together (a peek at LM's nice clutch). Does the stack on the crank look correct, before I tighten the nut with a spanner?
I've also attached a pic of my rebored and copper lined sleeves cylinder.

G-Man · Post by **G-Man** » Sun Dec 21, 2014 12:45 pm

What's the purpose of the copper? Improved heat transfer? Improved interference fit?

G

cleg · Post by **cleg** » Sun Dec 21, 2014 12:55 pm

Yes, copper for better better heat transfer.
I wondered about the nut, I will turn around. Thanks LM!

G-Man · Post by **G-Man** » Sun Dec 21, 2014 3:06 pm

Interesting. Tim does some amazing work.

G

Tim Miller · Post by **Tim Miller** » Mon Dec 22, 2014 9:56 am

Thanks Graham, Correct the reason for the copper plating is to buildup O.D of stock sleeve to achieve .003 to .004" interference for good heat transfer. Honda never had much if any interference.
It's all about the little details that make these little engines really run.

Tim

G-Man · Post by **G-Man** » Mon Dec 22, 2014 5:22 pm

Tim

Thanks, thanks for sharing that. I'm always amazed how little heat is required to get the sleeves to drop out of the barrels.

I've got a set of barrels ready with Aluminum sleeves ready for Nikasil coating. I must get them finished.

G

Tim Allman · Post by **Tim Allman** » Thu Dec 25, 2014 1:10 pm

I just checked the parts manual. It looks fine. The nut is oriented correctly with the chamfer to the outside.

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