Who makes the best piston ring?

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Originally Posted by R 70 Judge

IA2 Block / 4.35 Bore / Ross Custom dish

I received a set of Total Seal rings (CR 35)with my rotating assembly but it is not a true gapless ring so I'm switching to something different.

Anyone have experience with the C&A ZGS ring set, or want to recommmend another high quality gapless ring set?

Who makes the best piston ring set under $400? I personally am leaning toward the Childs & Albert ZGS (zero gap second) ring set. My engine builder has used them many times in the past with excellent results. (Mostly SBC & BBC engines)IA2 Block / 4.35 Bore / Ross Custom dishI received a set of Total Seal rings (CR 35)with my rotating assembly but it is not a true gapless ring so I'm switching to something different.Anyone have experience with the C&A ZGS ring set, or want to recommmend another high quality gapless ring set?

I know it's not one of the choices, my pick is Speed Pro file fit rings. They are inexpensive compared to zero gaps and perform as well or better in every case I've encountered. Hastings is another popular choice in the shop where I work. Alcohol and supercharged applications have different requirements than naturally asperated. Those applications the zero gap has merit.

I know it's not one of the choices, my pick is Speed Pro file fit rings. They are inexpensive compared to zero gaps and perform as well or better in every case I've encountered. Hastings is another popular choice in the shop where I work. Alcohol and supercharged applications have different requirements than naturally asperated. Those applications the zero gap has merit.

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Post by Eagle » Sat Jan 28, 3:49 am

Dear Nate,
Dear Dcal,
Dear Modok,
Dear engineguyBill,

Many many thanks for all your replies.
Now, it is very very clear to me.
If I am using any forged brand ( which I do use for the competition engines ), they do come with NPR or NPR type nitrided steel rings. I understand from your explanations that as long as I am getting the honing correct it would not matter if the cylinder is plain or ductile iron sleeved. This is a relief for me since I was on the correct direction.
For me, more challenging part was the choice of cast pistons with rather thick rings combinations. I now understand that if there is a Moly faced ring option is available, I better opt for Moly face that rather than the plain or ductile iron rings. Chrome faced rings should better be avoided for my type of builds.
Also, if I did understand correct, if available, I would better use thinnest possible ring combination on the cast pistons as well. It seems that, nowadays, some aftermarket cast piston manufacturers also redesigning their pistons for rather thinner rings than the original heavy and thick rings. To find suc a piston for the application is certainly beneficial.
Again, many many thanks to you all.
All the best,
Kerem

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