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RING GAP SIZE FOR .75 OVER ?

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hillhudson
honda305.com Member
Posts: 280
Joined: Tue Feb 15, 2011 9:19 pm
Location: Portland oregon

RING GAP SIZE FOR .75 OVER ?

Post by hillhudson » Wed Mar 21, 2012 5:12 pm

hey all,
i'm about to button up my cb77 with new pistons and rings (.75 oversize) what should i gap the rings to ?

is it the same as STD ring gap size ?

thanks

-hill
'65 s90
'64 ca95 dream
'65 cb160
'66 cb77

hillhudson
honda305.com Member
Posts: 280
Joined: Tue Feb 15, 2011 9:19 pm
Location: Portland oregon

Post by hillhudson » Wed Mar 21, 2012 8:10 pm

I've searched and searched and I can't find any thread about ring gap for oversize rings. I would really appreciate the help.

-hill
'65 s90
'64 ca95 dream
'65 cb160
'66 cb77

rzgkane
honda305.com Member
Posts: 537
Joined: Sun Feb 12, 2012 11:12 pm
Location: Huntington Beach, CA

Post by rzgkane » Wed Mar 21, 2012 8:22 pm

hillhudson wrote:I've searched and searched and I can't find any thread about ring gap for oversize rings. I would really appreciate the help.

-hill
I cannot think of one reason why ring gap should be any different based upon whether the pistons are a size over or not. I mean, the cylinder is a size over too, right?

hillhudson
honda305.com Member
Posts: 280
Joined: Tue Feb 15, 2011 9:19 pm
Location: Portland oregon

Post by hillhudson » Wed Mar 21, 2012 8:27 pm

Yes of course, I had them bored and honed to 3rd size over. I just wanted to make sure. I seconded guess myself a a lot.


Thanks

-hill
'65 s90
'64 ca95 dream
'65 cb160
'66 cb77

User avatar
davomoto
honda305.com Member
Posts: 2508
Joined: Sat Nov 18, 2006 7:36 pm
Location: Marin County CA

Post by davomoto » Wed Mar 21, 2012 8:43 pm

Hill,

Same ring gap as standard size rings! Got the key today, but realized the bike's down in Mom's garage, so it'll be a bit before I can try it. Thanks again!

Davo

hillhudson
honda305.com Member
Posts: 280
Joined: Tue Feb 15, 2011 9:19 pm
Location: Portland oregon

Post by hillhudson » Wed Mar 21, 2012 9:12 pm

thanks davo really appreciate it!

glad it got to ya!

-hill

p.s. remember to sand the key on both sides just a bit, u'll see what you need to do when you try to fit it as-is, for some odd reason its a little thicker than it should be.
'65 s90
'64 ca95 dream
'65 cb160
'66 cb77

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