spiral or ring type piston pin retainers

[Bob Mulry]

Originally Posted by Rich Biebel

I was in the engine machining and building world for many years and not once can I recall seeing round wire pin locks....from any of the major piston manufacturers.

Round snap ring type was common.....double per side and then spiral locks were the most common.

I'm not sure Rich, but I think that you might be referring to the doubled up Tru-Arc snap rings.

Bob

[Mark Yacavone]

Originally Posted by Bob Mulry

I'm not sure Rich, but I think that you might be referring to the doubled up Tru-Arc snap rings.

Bob

We used double Tru-Arcs a lot. Sharp side facing away from each other..to the outsides.
Again, no failures.
Also used single spiral locks too.

[Rich Biebel]

Originally Posted by Bob Mulry

I'm not sure Rich, but I think that you might be referring to the doubled up Tru-Arc snap rings.

Bob

No Bob.....What Mark said was spot on about Tru Arcs....exactly what we used and how we installed them..

I was thinking of some old engines and oddball stuff that we occasionally worked on....Round wire locks...

In my long working career I once worked in a pretty famous restoration shop here in NJ.....They did all old cars and specialized in Packards and other high end old cars....I worked on some real interesting cars for a while.....I worked in the mechanical end.....engines, drivelines,brakes, you name it.

Was to slow a pace for me and the pay was poor.....Rich guys spending a fortune and we got paid coolie wages....LOL

Like they say today.....He gone....that was me....