Considering electric Fuel Pumps
02-01-2019 | 11:59 AM
#1
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Considering electric Fuel Pumps
My 489's are currently apart having clearances checked and other issues addressed. They are at a more experienced high performance shop with marine experience. Upon inspection, my engine guy found that the fuel pump lobes on my cams (Howards part# 120405-10) are showing some wear. Something about my mechanical pumps were not right. I was running some holley pumps. I was considering doing away with the mechanical pumps and going electric, and keeping my current cams. Otherwise, I'll have to replace my cams.
Recommendations? I'm not familiar with running electrical fuel pumps in an offshore boat or if it's advisable? Or should I just buy new cams and address the mechanical fuel pump problem?
Thanks.
Recommendations? I'm not familiar with running electrical fuel pumps in an offshore boat or if it's advisable? Or should I just buy new cams and address the mechanical fuel pump problem?
Thanks.
02-01-2019 | 01:03 PM
#2
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From: Pasadena, MD
I run them in my restored race boats. Just have them dash switched but in a normal boat you will need to add a oil pressure switch and do some wiring. You cant have the fuel pump run when the motor isn't in a boat. The O/P switch will only come on when there is like over 5psi oil pressure which happens when cranking the motor.
02-01-2019 | 01:31 PM
#4
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From: Kemah, Tx
I run electric carters, 5-6 psi internally regulated, to Holley carbs. No issues here. Mount them LOW otherwise they struggle, mine are 1/2 way down from the top of the tank and no issues.
I prefer to have oil pressure switches control them, but have a bypass switch for trOubleshooting or getting home when the pressure switch dies.
I prefer to have oil pressure switches control them, but have a bypass switch for trOubleshooting or getting home when the pressure switch dies.
02-01-2019 | 02:26 PM
#5
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Joined: Apr 2005
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From: Northport N.Y.
My 489's are currently apart having clearances checked and other issues addressed. They are at a more experienced high performance shop with marine experience. Upon inspection, my engine guy found that the fuel pump lobes on my cams (Howards part# 120405-10) are showing some wear. Something about my mechanical pumps were not right. I was running some holley pumps. I was considering doing away with the mechanical pumps and going electric, and keeping my current cams. Otherwise, I'll have to replace my cams.
Recommendations? I'm not familiar with running electrical fuel pumps in an offshore boat or if it's advisable? Or should I just buy new cams and address the mechanical fuel pump problem?
Thanks.
Recommendations? I'm not familiar with running electrical fuel pumps in an offshore boat or if it's advisable? Or should I just buy new cams and address the mechanical fuel pump problem?
Thanks.
02-01-2019 | 04:53 PM
#6
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Joined: Apr 2014
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From: North Florida
I have run the aeromotive pump and bypass regulator for years now. Reliable and quiet. The pressure switch runs to a relay that runs to the pump for safety but also kills the engine if there is a loss of oil pressure. The pump is easily jumped to prime your carbs after any extended lay up. All and all a vast improvement over mechanical. There is a lot of plumbing involved and you need a port for the fuel return or a t into your fill hose. The aeromotive filters are *****in too ,at the risk oh sounding opinionated .
02-02-2019 | 01:00 AM
#10
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From: Pasadena, MD
I don't think I would do them if I didn't have to. Like I said I have them in my old race boats. One because it has a Gen V motor in it and the other is because of the motors being such B-words I like being able to prime the double pumpers with a switch at the dash. But these are race boats and I like being able to shut the fuel down at the dash if something goes wrong like these death traps can every time out. lol. After killing a couple fuel pumps I now use Carter Competition Series Electric Fuel Pumps and I put them as close to but after the fuel filter that way no matter how long it sits the pump wont ever run dry can it will draw off the filter's reserve.
I know you are having issues with the cam / fuel pump. By the time you build a proper electric system fixing what you have may be easier.
I know you are having issues with the cam / fuel pump. By the time you build a proper electric system fixing what you have may be easier.
