FUEL PRESSURE QUEST..
Thread Starter
Racer
Joined: Jun 2001
Posts: 335
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From: MANTEO NC USA
FUEL PRESSURE QUEST..
I HAVE A 86 L98 WITH A FEW MODS .444/.444 COMP CAM PORTED AND POLISHED HEADS SLP HEADERS SIAMSED RUNNERS CUT AIR LID WITH K&n FILTER NO CATS FLOWMASTER MUFFLERS 3.73 GEARS HYPERTECH CHIP 160 DEGREE THERMOSTAT 2600 STALL CONVERTOR JUST ADDED MY AFPR WHAT FUEL PRESSURE SHOULD I BE RUNNING FOR BEST PERFORMANCE. ALSO HAVE 100 DRY SHOT OF NITROUS NOT ALWAYS USED THOUGH..
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: FUEL PRESSURE QUEST.. (DADDY D)
Start with your stock FP (if unknown try 44psi) and increase as you make passes at the strip till trap speed drops off; then back off say 2psi.
Be sure to make passes at the same coolant temp though.
Be sure to make passes at the same coolant temp though.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: FUEL PRESSURE QUEST.. (DADDY D)
There is a chart on my site that relates fuel flow to pressure for several injector sizes.
You can extrapolate between injector sizes. The relation of flow to pressure is the SQRT of the ratio, so a 10% increase in pressure brings about a 5% increase in flow.
You can extrapolate between injector sizes. The relation of flow to pressure is the SQRT of the ratio, so a 10% increase in pressure brings about a 5% increase in flow.
