Hat nozzle body

After my first pass witht the engine in front of me, I'm definitely never making another pass with aerated nozzles. Planning on using non deflector bodies. How much should I expect to change my barrel valve to get the idle the same?

 

I've seen and experienced that pointing up vs down doesn't seem to make any difference, seems like the non deflector would result in more charge cooling than quenching on the deflector and then again right on the rotor. If nobody has ever done it before, or has with bad results, then Ill stick with deflectors.

 

May I ask why it is believed non deflectors are a no go? It shouldnt matter as your fuel pressure is above boost pressure? Hence why certain teams run the Enforcer nozzle jets that spray a conical pattern..

Just curious

 

Mike, you are mostly correct. I also got a little on the burnout and more than a little at the hit. I have non-aerated deflectors on the way but still suspect there could be an advantage to non deflectors in the hat.

 

I think a lot of people think that a aerated nozzle is to mix or aerate the fuel.It is not. It is to give the engine idle air so the butterflies don't have to be as far open which makes the idle speed harder to set. The deflector tip helps break up the fuel stream to mix with air to cool and seal the blower. I must say though,after it goes through the spinning rotors, it is pretty much mixed no matter what.
-Dale

 

On my FED i have aeration nozzle bodies in the hat. I get no fuel in shut down. I also run ports.

My Nova had them 10 years ago, and it would rain on the windshield. I didn't run ports.

Each combo is a little different. Not sure if it was the ports causing it or not.