FrontEngineDragsters.Org Forum
Technical => Spud Miller's Cave => Topic started by: fuel749 on January 22, 2015, 07:04:26 AM
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Is there an optimum fuel pressure to shoot for with my Hilborn pump? Is cavitation or something similar an issue at higher fuel pressures? Any benefit from a gear pump with more pressure? All of this is on Alky by the way.
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If you could be making 80-120 PSI at the nozzle at the finish line, that would be great. That's about all you'd want to see with a standard (Hilborn/Enderle) type pump. There really isn't a benefit to going a bunch higher than that. The gear pumps don't mind the pressure, but it's not worth the extra cost for one just to run a bit more in my opinion.
Somewhere around 200-230 PSI, standard type nozzles quite flowing in a linear way anyway.
A pump won't cavitate due to high pressure on the outlet side. Mostly cavitation happens due to drawing too much volume through a small or restricted supply side.
Spud
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Thanks Spud.