Total Seal Rings

[SSDiv6]

Originally Posted by trmnatr

I have used both the GoldFinish and AP Non-Gapless rings but have not had the engines back in the shop for a re-build

What are your guys thoughts on these rings as far as wear? I know they both are very flat, The AP uses a Chrome Nitride face coating and the GoldFinish uses a PVD coating

Have any of you had these on the dyno compared to a std moly? I dont have access on the dyno but i dont think the engines lost any power/performance with these rings

It will be interesting when we get the engines back for teardown to see how they are holding up

This has always been a controversial subject.

In the have spoken to engineers that were involved in developing rings for the Pro Stock class engines, current Pro Stock and also NASCAR. Also seen lots of discussion on the subject at the SpeedTalk forum.

Like I said, you will get all kinds of responses. In a nutshell, what I have found is the gapless rings may work in applications with big bores, thin wall blocks and compression ratios not exceeding 14 to 1. In applications with small bores and lots of compression, will make less power and slow down the car.

My choice is Akerly & Childs top ring, Napier second and low tension oil. The main factor in engine sealing is the proper choice of ring material, proper wall finish and optimum ring gap for the application. Too many times the gapless ring will act as a band-aid for other problems in the engine.