How much is too much, for one fogger nozzle?

[skiwesser]

How much is too much, for one fogger nozzle injected at the throttle body.
It is a wet system (190lph pump) and will be tuned for the nitrous, because of that I can only have one size shot and I want to go as big as is safely possible, 150-175? too much?

[Dark_5.0]

In theory your fresh 306 can and will handle a properly set-up 175 shot. However just remember that the bigger the shot the quicker your motor will go boom with a lean or timing condition.

I have seen guys successfully spray 250 shots on a stock short block.

Its all in the tune. Think about it, 99% of the time when a nitrous motor fails there is a hole in the piston due to a bad tune. Very rarely will you see someone split a block.

Good luck,

[skiwesser]

I have been told that 150 should be max to guard against a BIG backfire through the intake as I'm injecting it all through one nozzle and not a plate or into each runner on the intake?

And yes it WILL be tuned for it before I ever hit it!!

[Dark_5.0]

Originally Posted by skiwesser

I have been told that 150 should be max to guard against a BIG backfire through the intake as I'm injecting it all through one nozzle and not a plate or into each runner on the intake?

And yes it WILL be tuned for it before I ever hit it!!

Yeah the bigger kits are direct port. There wouldnt be any difference in the carnage created by a 150 or a 175 shot in the event of a nitrous backfire IMO.

Im jealous, I am months away from racing.

[skiwesser]

Actually the bigger jets I have are a .064 & .037 which comes out to a 185 shot according to: http://www.coldfusionnitrous.com/calculator.html

185 too much? The next sizes I have after those figure to 132hp so it's either buy some more jets at $9 a piece or go with the 185 shot?

What should I do?? I am afraid that may be too big a hit??