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03-29-2015, 08:58 AM | #31 |
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Join Date: May 2013
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Re: Failing Fuel Pumps
John gave me some advice to put a return on the regulator with a jet to take out the cavitation,I also run a T-Bolt 5 years on the same pump a BG 400 go though the traps at 8000
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04-11-2015, 02:08 AM | #32 | |||
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Join Date: Jul 2013
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Re: Failing Fuel Pumps
Quote:
Sure the extra hose may not be a problem,but there are plenty of other ways that fuel can/will cavitate/aerate in the lines w/o "sucking air" as he states. Also not too sure I would take advice from someone that does'nt know better than to say something like that. Quote:
Gasoline has a very low boiling point @ atmospheric pressures & temps,that's why it evaporates as rapidly as it does. See,it's like coolant in a cooling system,raise said system pressure,you've just raised said fluids boiling point. Lower the system's pressure below ambient pressure,you've just lowered said fluids boiling point. Any restriction on the inlet side of the pump will inturn cause negative pressure (ie: vacuum) thus lowering the fuels boiling point,and yeah it can & will boil the fuel in the lines and that absolutely can & will lead to aeration/cavitation issues,that's just basic fluid dynamics @ work. Fighting G forces,use of hard 90° fittings (or sharper),using too fine of an inlet side filter (<100 microns),using a filter with insufficient surface area,using improper hose size,inadequate system venting,all will be "seen" as a restriction to the inlet side of the pump. All can lead to cavitation/aeration issues. And cavitation/aeration left uncorrected absolutely will cause pumps to fail. Funny thing is even Aeromotive says so in their tech bulletin #TB-101 on their website... Quote:
I prefer/use the Product Engineering pumps,and follow his (John Rademacher) system recommendations to the T. (someone already posted the diagram in an earlier post,and do note that he advises no 90° fittings on the inlet side whatsoever) FWIW ~ HTH Bret P. |
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