Reggie Joined Jul 24, 2006 Messages 1,062 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 1,062 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 20,034 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.
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.
dave M Joined Oct 19, 2005 Messages 1,624 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.
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 ?
dave M Joined Oct 19, 2005 Messages 1,624 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.