Can I get 80CC Combustion Chamber from a 317
01-17-2014, 09:21 AM
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Can I get 80CC Combustion Chamber from a 317 Here's my deal I got a LQ9 and I wanna try something.
Correct me if i'm wrong but if I get the 317 Chamber brought up to ~80CC's and use a LS9 gasket I should be in the 9.5's compression with the flat top LQ9 pistons.
Has anyone ever tried this? So far with porting I have only seen 74-75cc's in the ported 317s
Correct me if i'm wrong but if I get the 317 Chamber brought up to ~80CC's and use a LS9 gasket I should be in the 9.5's compression with the flat top LQ9 pistons.
Has anyone ever tried this? So far with porting I have only seen 74-75cc's in the ported 317s
01-17-2014, 10:30 AM
#2
That combo right there should be around 9.3 SCR. If you want 9.5 then you would only need 78cc chambers.
When AI did my 243 heads, their bowl porting took out about 5ccs. So if you apply that to a 317 head that should bring it to 77ccs and in your case be at 9.6 SCR.
When AI did my 243 heads, their bowl porting took out about 5ccs. So if you apply that to a 317 head that should bring it to 77ccs and in your case be at 9.6 SCR.
01-17-2014, 12:31 PM
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Thats what I was looking for. I really could care less if they ported the heads. Just the bowl work. Not sure if it would be worth it to get done locally or send them out to someone....
I would be fine with 9.6 to 1, its only gonna be a 76mm On3 prob maxing out at like 6-700 with that turbo anyway. Just something to play around with till I get the $$ to coin up for some rods, pistons and machine work in the bottom end.....
I would be fine with 9.6 to 1, its only gonna be a 76mm On3 prob maxing out at like 6-700 with that turbo anyway. Just something to play around with till I get the $$ to coin up for some rods, pistons and machine work in the bottom end.....