Looking at building a solid roller nitrous motor that could be filled up with 93 octane and driven on the street once and a great while. Would a 11.7 static compression and 8.78 dynamic compression be to high?

Michael

 

problem is pump gas + nitrous = detination. Which is a really bad deal.

 

not really if you run a dedicated fuel system for the nitrous with race fuel. I am going a very similar route, pump gas motor huge shot of the gas

 

Nitrous is not the issue. I am talking about running the car on street very little and it would be without the nitrous. Race gas only when using nitrous at the track, period.

Michael

 

11.8:1 is very safe. I ran as high as 12.5:1 (not just ran, but RACED) but that was pushing it.

my 401ci motor was 12:1 and I actually ran it on a nitrous a bit on 93 octane, though I dont reccomend it :-D

 

The boundries of pump gas all depend on burn, the ability for the motor to take detonation, the coolant and the quality of the fuel.

If you are 100% on that DCR then you will be ok if things are done correctly.

If you never run the juice on pump gas then even better.


Bret

 

I run a 425 CI SBC solid roller 12:1 compresion on the street with Nitrous. But I have to run race fuel..... I tried a mix 50/50 108 and 93 pump and had trouble...