here's a pic I dug up to give you an idea on the size of the solenoids...

http://members.mustangworks.com/ultr...ck306combo.jpg

ron1, the reason that i keep coming back to my compression ratio is that: ITS SAFER TO SPRAY 300 ON A 8.5:1 THAN IT IS ON A 12.5:1 CAR RIGHT. since the spray is only craming the chamber with oxygen when ignited, its acting just like a blower, so the lower the compression the more spray friendly it is RIGHT?

The less volume efficient an engine is, the more effect NO2 will have on it.
IMO, I would say it's better to have a lower compression ratio than a higher one if using N02.

you mean N2O right? ;)

I would say that spraying 300hp isn't any 'safer' with 8.5:1 compression than it is with, say, 16:1 if the tune and fuel octane aren't right... you can obviously make more power, and get a more efficient burn with higher compression, thus it is more desirable to run more compression with nitrous. Eric4Nitrous, as well as Bill Glidden, who did Eric's motor, both run around 16:1 and spray a WHOLE lot more than 300hp.

It's all in the tune when we're talking 'safe', because, face it, with nitrous you are eventually going to hurt a piston or have some sort of backfire, that's what finding the right tune is all about. Learn from your mistakes, take good notes, and progress from there.

Nitrous likes compression...

That's the answer. Could not agree more.

Thanks Ultraflo..

Ron

so ill be good until i get the turbo, thanks for the input guys. i sprayed 200 on my stock motor and eventually floated some valves and blew it up.