jed wrote: ↑Fri Oct 23, 2020 9:50 am
I just want to thank you Stock and Super Stock racers for sharing your hard learned engine assembly information and car
preparation. Jeff I hope your car performs well and is competive.
I am assuming that NHRA Super Stock can run a vacuum pump but limit the amount of vacuum.
And Just to confirm LSP mentioned that Super Stocks can run belt drives instead of the conventional timming gear and chain.
When back cutting ring are the Pistons ordered with less ring grove depth or is the space filled with some kind of spacer.
Also is the top ring a moly faced, ductile iron with a coating or some other coated metal.
Not even in SS can you run a vacuum pump! But you can run a pan-e-vac.
Yes, you can run a timing belt. However, oil pump must be driven same as factory.
Yes, pistons grooves are not as deep to accommodate the back-cut rings. If not, you use shim stock to “fill the void”. Shim stock is usually .015” thick and you can wrap the stock several times if needed.
Rings come in all kind of flavors. I have a good working relationship with Kieth Jones at Total Seal. I would highly suggest you do the same or find somebody that really knows their stuff regarding rings, pistons, and honing. Because it all boils down to these three things in a short block:
Ring seal
Ring seal
Ring seal