Honda-SOHC

SOHC.co.uk Forums => CB750 => Topic started by: billy192 on October 04, 2013, 03:27:23 PM

Title: which ring goes on top ?
Post by: billy192 on October 04, 2013, 03:27:23 PM

Just putting the new rings on the new pistons, one ring has a bevel on top

(http://i1209.photobucket.com/albums/cc393/njwill1/new/Projects/CB750K6/IMG_5870_zps152440e9.jpg) (http://s1209.photobucket.com/user/njwill1/media/new/Projects/CB750K6/IMG_5870_zps152440e9.jpg.html)

the other no bevel
which is the top ring?
(http://i1209.photobucket.com/albums/cc393/njwill1/new/Projects/CB750K6/IMG_5871_zps5742023b.jpg) (http://s1209.photobucket.com/user/njwill1/media/new/Projects/CB750K6/IMG_5871_zps5742023b.jpg.html)

Billy

Title: Re: which ring goes on top ?
Post by: ka-ja on October 04, 2013, 04:44:01 PM

Hi,
      I think the ring with the chamfer is the top ring, the chamfer is intended to help after a re-ring on a used bore, it minimises the effect of any wear ridge around the top of the cylinder wall from the old piston

Title: Re: which ring goes on top ?
Post by: Bryanj on October 04, 2013, 06:19:28 PM

Champher hasno bearing on it,

chrome ring top groove black ring secong groove

numbers facing upwards

Title: Re: which ring goes on top ?
Post by: billy192 on October 04, 2013, 07:35:34 PM

They are both black?

Title: Re: which ring goes on top ?
Post by: ka-ja on October 04, 2013, 07:42:59 PM

Hi,
    Apologies to billy192 and bryanj, I can only go with my remembered instructions for my yoshimura rings, which were all black finihed, and were fitted as stated, there was a dot to mark comp. ring upper side

Title: Re: which ring goes on top ?
Post by: Bitsa (Ralph Wright - RIP) on October 04, 2013, 08:22:25 PM

Billy,
Hoped you remembered to check the ring gaps don't assume cos its new its all OK.
Cheers
Bitsa

Title: Re: which ring goes on top ?
Post by: billy192 on October 04, 2013, 08:43:49 PM

bitsa,
will check first thing in the morn before fitting barrels
Billy  :P

Title: Re: which ring goes on top ?
Post by: billy192 on October 05, 2013, 09:19:55 PM

thanks
 8) 8) 8)