Piston rings

Piston rings

This topic has 7 replies, 6 voices, and was last updated 12 February 2026 at 13:42 by bernard towers.

Viewing 8 posts - 1 through 8 (of 8 total)

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10 February 2026 at 19:39 #837113
Dougie Swan
Participant
@dougieswan43463
hi

Im looking for some piston rings 1-3/16 dia

width around 1/16, can anyone help

Thanks

Dougie
Advert

10 February 2026 at 19:49 #837118
Andrew Tinsley
Participant
@andrewtinsley63637
They are not difficult to make, what little skill is needed comes in splitting them. I have a large number of US and UK made spark ignition engines which often need new rings.

Andrew.
10 February 2026 at 20:31 #837128
JasonB
Moderator
@jasonb
I also make them myself

If you have not made the cylinder yet then 30mm rings are readily available on the net and only 6thou smaller.
10 February 2026 at 22:17 #837136
ChrisLH
Participant
@chrislh
Prof Denis Chaddock wrote a very informative article on the subject of DIY piston rings many years ago. PM me if you would like a copy.
10 February 2026 at 22:33 #837149
duncan webster 1
Participant
@duncanwebster1
Good article by TDWalshaw (Tubal Cain), again pm me for copy
11 February 2026 at 06:22 #837166
Dougie Swan
Participant
@dougieswan43463
Thanks for the replies, Jason came up with the best suggestion

30mm it is

Dougie
11 February 2026 at 07:00 #837167
JasonB
Moderator
@jasonb
At £2.80 a pair delivered, that is a lot less than the cost of a suitable piece of CI bar which means the “weed Whacker” ready made rings do have a lot going for them.

Though I tend to use Viton O rings in my IC engins these days.
12 February 2026 at 13:42 #837266
bernard towers
Participant
@bernardtowers37738
lots of articles available on ring making/tempering etc.. The american ic mags have some interesting info. `i break mine first and gap later after tempering. Try to get SG bar.
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