Author Topic: pistonring brand  (Read 566 times)

Offline Marqs1979

  • A's Best Friend
  • ***
  • Join Date: Sep 2013
  • Posts: 109
  • Karma: 0
pistonring brand
« on: 29.12. 2013 19:34 »
Hi

Does all brand fitts on on all pistons? I do not know what brand i have on the pistons: (

regards/Markus

Online muskrat

  • Global Moderator
  • Wise & Enlightened
  • **
  • Join Date: Jul 2009
  • Posts: 8331
  • Karma: 107
  • Lithgow NSW Oz
    • Shoalhaven Classic Motorcycle Club Inc
Re: pistonring brand
« Reply #1 on: 29.12. 2013 22:15 »
G'day Marcus.
The short answer is no. The comp rings are 1/16" and oil ring is 1/8" thick which is common for pommy 4 strokes but the depth can vary. If the pistons were made for an A7/10, rings made for the same will fit.
No way of telling what brand you have. I try to get original Hepolites if possible. At the moment I have Italian Mondial pistons with Hep rings made for a Triumph 650. They were a little snug in the grooves, a light rub with wet & dry fixed that.
Cheers
'51 A7 plunger, '57 A7SS now A10CR,  '83 CB1100F, 88 FXST .
Australia
Muskys Plunger A7

Offline Rocket Racer

  • Wise & Enlightened
  • *
  • Join Date: Jun 2009
  • Posts: 1434
  • Karma: 16
  • A kiwi with a racing A10 rig and too many projects
    • NZ Classic Sidecar Racing
Re: pistonring brand
« Reply #2 on: 19.01. 2014 23:51 »
where possible I run 3 or 4 piece oil scraper rings, (preferably 3) as they do work more effectively than the one piece type that take quite a while to settle down and in a worn bore often don't.
A good rider periodically checks all nuts and bolts with a spanner to see that they are tight - Instruction Manual for BSA B series, p46, para 2.
New Zealand