cubezilla

iTrader: (6)

My setup
RHS talldeck 9.750
4.250 stroke crank
6.460 rod
ETP C5-R head 40cc chamber

so if my math is right
2.125(stroke) + 6.460 = 8.585
9.750 — 8.585 = 1.165 compression height

i found a set of Diamond pistons that have
4.130 bore -23cc dish and a CH of 1.163

would these work or are the numbers too close.... do you round up the stroke+rod to 8.60 ?

with my cc head and a .041 gasket wouldn’t i have something like 13.6 to 13.8 to 1 compression.

Would these Pistons Work?

also gonna spray no more than 200hp nitrous.

Che70velle

iTrader: (6)

Your math is fine. That piston would be in the hole .002”. Are you going boost? Those pistons have a big dish. What compression numbers are you shooting for? My math comes to 13.55 compression with your numbers above.

cubezilla

iTrader: (6)

it would be used with a nitrous plate, but im not trying to scatter it either, so no more than a 200 kit with my edelbrock nitrous controller ramping tge power in....

i just dont see any other option than a big dish piston because of my cylinder heads combustion chamber

Che70velle

iTrader: (6)

With that chamber, your just about stuck with the deep dish setup. From a combustion standpoint, I’d rather see flat tops utilized, for flame propagation and a more efficient burn due to the quench area helping out, but the dish setup will work fine. You might get a tad more compression out of the setup than I posted, due to me not knowing what bore diameter head gasket you’ll need. I’m not exactly sure how those chambers are done. You’ll want the gasket out of the chamber for flow efficiency. I punched in a 4.160” gasket diameter, but it might can be smaller...not sure. You could also have the block decked to get the pistons out some, once you’ve mocked up the assembly and checked everything with a deck bridge. Would be worth some compression, and I don’t think that PTV will be an issue with the dish pistons, but again I don’t know valve drop on those heads. Mock it all up and check everything twice. 😉 Anyhoo, cool build man.

cubezilla

iTrader: (6)

bore will be 4.130