Reggie Joined Jul 24, 2006 Messages 1,066 Oct 31, 2006 #1 I am fitting some new piston rings in my Norton (when they arrive). I would assume that they will come pre-gapped, but can anybody tell me what gap the three rings should have, and I'll check them anyway. Reggie.
I am fitting some new piston rings in my Norton (when they arrive). I would assume that they will come pre-gapped, but can anybody tell me what gap the three rings should have, and I'll check them anyway. Reggie.
Reggie Joined Jul 24, 2006 Messages 1,066 Oct 31, 2006 #2 Sorry, I didn't amend my title. I have posted a separate thread for the control unit. Reggie
L.A.B. Moderator VIP MEMBER Joined Nov 20, 2004 Messages 20,415 Oct 31, 2006 #3 As I think you are referring to an 850 MkIII The factory manual says: Top ring gap = 0.010 - 0.012 in. Middle ring gap = 0.008 - 0.012 in.
As I think you are referring to an 850 MkIII The factory manual says: Top ring gap = 0.010 - 0.012 in. Middle ring gap = 0.008 - 0.012 in.
7 79x100 Joined May 19, 2006 Messages 1,612 Oct 31, 2006 #4 I've never had to alter the gap on 850 rings. I think that I would double check everything before I started removing metal.
I've never had to alter the gap on 850 rings. I think that I would double check everything before I started removing metal.
D dave M Joined Oct 19, 2005 Messages 1,631 Oct 31, 2006 #5 I have had to alter the gaps on new rings before so it is worth checking before going ahead with final assembly.
I have had to alter the gaps on new rings before so it is worth checking before going ahead with final assembly.
7 79x100 Joined May 19, 2006 Messages 1,612 Nov 1, 2006 #7 dave M said: I have had to alter the gaps on new rings before so it is worth checking before going ahead with final assembly. Click to expand... Were those Hepolite rings ?
dave M said: I have had to alter the gaps on new rings before so it is worth checking before going ahead with final assembly. Click to expand... Were those Hepolite rings ?
D dave M Joined Oct 19, 2005 Messages 1,631 Nov 1, 2006 #8 It's a while ago so I don't remember the brand but I'm sure I bought piston and ring sets from Norvil. My bike is a 750 and I had it rebored.
It's a while ago so I don't remember the brand but I'm sure I bought piston and ring sets from Norvil. My bike is a 750 and I had it rebored.
