Author Topic: Piston rings  (Read 280 times)

Offline TimK

  • A's Good Friend
  • ***
  • Join Date: Mar 2012
  • Posts: 170
  • Karma: 0
Piston rings
« on: 09.02. 2023 05:58 »
Does anyone know of a retailer that sells piston rings by size rather than for a specific model? I'm after some rings for my 1929 AJS M6. Piston diameter is 2.905" / 73.8mm (it doesn't seem to be a specific fraction). The present rings are 0.06" thick and 0.1" wide.
Cheers
Tim K
Tim Kerridge
Australia

Online groily

  • Wise & Enlightened
  • *
  • Join Date: Jul 2007
  • Posts: 1848
  • Karma: 31
    • www.brightsparkmagnetos.com
Re: Piston rings
« Reply #1 on: 09.02. 2023 07:11 »
Bill

Online muskrat

  • Global Moderator
  • Wise & Enlightened
  • **
  • Join Date: Jul 2009
  • Posts: 10777
  • Karma: 130
  • Lithgow NSW Oz
    • Shoalhaven Classic Motorcycle Club Inc
Re: Piston rings
« Reply #2 on: 09.02. 2023 18:45 »
G'day Tim.
You will need to know the bore size, ring thickness and radial depth. Radial depth is most important. Cox & Turner sound good. I don't know of anyone down here.
Cheers
'51 A7 plunger, '57 A7SS racer now a A10CR, '78 XT500, '83 CB1100F, 88 HD FXST, 2000 CBR929RR ex Honda Australia Superbike .
Australia
Muskys Plunger A7

Offline TimK

  • A's Good Friend
  • ***
  • Join Date: Mar 2012
  • Posts: 170
  • Karma: 0
Re: Piston rings
« Reply #3 on: 09.02. 2023 20:37 »
These are many folks' Go-To Guys.
https://www.coxandturner.co.uk/piston-rings/
These guys too
https://www.fwthornton.co.uk/piston-ring-sets-l
Thanks Groily. I haven't spoken to them yet, but from their website (Cox and Turner), they certainly look like they should be able to help. I'll let you know how I get on.
Cheers
Tim
Tim Kerridge
Australia

Offline TimK

  • A's Good Friend
  • ***
  • Join Date: Mar 2012
  • Posts: 170
  • Karma: 0
Re: Piston rings
« Reply #4 on: 09.02. 2023 20:43 »
G'day Tim.
You will need to know the bore size, ring thickness and radial depth. Radial depth is most important. Cox & Turner sound good. I don't know of anyone down here.
Cheers
Cheers Musky, I've got the measurements so I'm hoping they can help - I'm just dreading the postage, which is painful from the UK at the moment. I was recently quoted GBP 22 for post and packing on one of the little "J Lucas, King of the road" badges for the AJS Magdyno - I reckon it would weigh about 5grams! (No I didn't buy it - I'll just keep my eyes open).
Cheers
Tim
Tim Kerridge
Australia

Online fffcycles

  • A's Good Friend
  • ***
  • Join Date: Feb 2021
  • Posts: 121
  • Karma: 1
Re: Piston rings
« Reply #5 on: 10.02. 2023 01:37 »
I just told Cox & Turner to send my A7 rings by Royal Mail, I rarely worry about tracking and signatures, came quite quickly and at a reasonable cost.
Frank
Frank P Kamloops BC
1948 A7 Long Stroke, a collection of BSA D1/B44/B50/A65 from the 50's thru 70's, Ariels/Nortons/Triumphs and a smattering of Japanese