FrontEngineDragsters.Org Forum

Technical => Spud Miller's Cave => Topic started by: spookie on July 27, 2014, 07:45:48 AM

Title: nozzle size
Post by: spookie on July 27, 2014, 07:45:48 AM

just changed heads.Went from .066 pill to .o54 .Do I need to change nozzles? Have #0 pump with Kinsler  code m410 nozzles.{.026 ?} Picked up 1/10 in 1/4mi Seems to run fine,worring about to high of pump pressure. Thanks for help.

Title: Re: nozzle size
Post by: Spud Miller on July 27, 2014, 09:09:10 AM

 What is the highest RPM you achieve on a pass?

 Spud

Title: Re: nozzle size
Post by: spookie on July 28, 2014, 03:09:52 PM

Highest rpm 6800. leave at 4800, shift at 6000. P.S. this is on alcohol.

Title: Re: nozzle size
Post by: Spud Miller on July 28, 2014, 06:06:15 PM

 I'm showing you're making nearly 160 PSI at 6800 RPM. For a gear pump (Waterman, Kinsler...) that's no problem really. If it's a traditional Enderle/Hilborn style pump, I'd put bigger nozzles in it.

.028's and a .058 pill instead would be the same tuneup but with 40 PSI less pressure at the stripe.

Spud