belt driven fuel pump
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belt driven fuel pump

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    Member 540bahner's Avatar
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    Default belt driven fuel pump

    hi everyone im currenttly suffering from the electric fuel pump blues . unfortunatly my 540 is based off a gen6 bowtie block and i cannot put a mech pump on it. i would like 2 switch 2 a belt driven pump but i would like some advice from those that are running them. alittle about my setup is im running a naturally asp 540 with a tunnel ram and two 950hp's currently being feed by 2 air locking pos holley blue pumps one off each tank 2 each carb they work then they dont and im fed up the motor is 13 to one comp and is thirsty the boat currently runs 95 mph any advise on setup and cost 2 go belt drive would be helpfull thank you brads bad bahner

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    Senior Member ap67et10's Avatar
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    Quote Originally Posted by 540bahner View Post
    hi everyone im currenttly suffering from the electric fuel pump blues . unfortunatly my 540 is based off a gen6 bowtie block and i cannot put a mech pump on it. i would like 2 switch 2 a belt driven pump but i would like some advice from those that are running them. alittle about my setup is im running a naturally asp 540 with a tunnel ram and two 950hp's currently being feed by 2 air locking pos holley blue pumps one off each tank 2 each carb they work then they dont and im fed up the motor is 13 to one comp and is thirsty the boat currently runs 95 mph any advise on setup and cost 2 go belt drive would be helpfull thank you brads bad bahner
    Wow, sounds like you have a sweet engine they you are dying to blow up. I'm an electric pump fan....but would never run a holley on anything performance. But running 1 tank and pump to 1 carb is bad news (if I am understanding you correctly) carbs need to be tied together. If one runs dry but the other has fuel, I'd think melting would be easily acheived, if they both run dry then hopefully it just shuts down.

    I'd say run both tanks to a nice Y to a single electric pump, either aeromotive or magnafuel, to a nice bypass regulator then to the carbs. The return will go from the regulator to the pump inlet (the good pumps have provision for this built in) also the pump must be powered by a relay and at least fused on the load side, if not the load and control side.

    A system like this will get it done. It'd be the easiest and cheapest way to get adaquate fuel supply. Belt would do good also, just more expensive and hassel when it's really not needed.

    Andrew

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    Quote Originally Posted by 540bahner View Post
    hi everyone im currenttly suffering from the electric fuel pump blues . unfortunatly my 540 is based off a gen6 bowtie block and i cannot put a mech pump on it. i would like 2 switch 2 a belt driven pump but i would like some advice from those that are running them. alittle about my setup is im running a naturally asp 540 with a tunnel ram and two 950hp's currently being feed by 2 air locking pos holley blue pumps one off each tank 2 each carb they work then they dont and im fed up the motor is 13 to one comp and is thirsty the boat currently runs 95 mph any advise on setup and cost 2 go belt drive would be helpfull thank you brads bad bahner
    Add some marvel mystery oil to each tank of fuel. Pump gas is oxygenated and makes electric pumps overheat.

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    Ya Got The Blues? No more electric? I feed 2 Doms with a single mallory electric 140 marine pump located behind the engine at the stringer. The fuel is drawn from the tanks at the bottom rather than thru the top. I use 1/2 in I.D. rubber line to a Y, into a old system1 fitler that is before the pump. My pump,via-8 line feeds to a barry grant 4 port dead head regulator with gauge port. My regulator is as close the the carbs as possible. Dash 6 hose feeds the 4 bowls. My boat pulls hard(to me) and the plugs look great. I have done the BG 400-the BG HR220 and mallory return style regulator. The system I use is not perfect. If I park the boat with one side higher than the other with full tanks, the higher tank dumps to lower and gas comes out of the vented cap. I thought about some type of check valve in the lines but will ask around first. If You run a Belt driven or cam driven mechanical pump, you should have some type of return or loop to bleed off excess fuel. Balancing that with side gunnel tanks is tough unless you pull from one tank at a time, and return to that tank. I have a gen 5 block. Maybe run a mallory 120 on each tank?

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    mo balls than $cents$ IMPATIENT 1's Avatar
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    obx belt driven fuel pump 179.00 mandrel/belt/pump pulley from good vibrations for another 100 bucks, aeromotive 13202 regulator can be found easily for 110 used and shipped. have nuff fuel to support over 1500hp and no more air locking bs

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

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    Member 540bahner's Avatar
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    im hoping some of you guys can show me some pic's of your setup's i would like 2 mount the pump on the passenger side where the mech used 2 be on the old motor . i used 2 have a blown 496 with a big mech and it worked great but since putting the big motor in and running the elec pumps ive fought issues priming and sucking air after a good 1/4 mile pass and decelerating too quickly my tanks pull from the top also i really need to get my fuel system proper as we just sent the tunnel ram 2 speed tech 2 get their direct port nos setup and the last thing im going 2 do is add a third elec pump too feed it im hoping too run the carbs and the kit off one belt drive pump i may be pulling the side tanks and putting one t tank between the motor and the back of the boat thanks for the ideas (impatiant 1) would like too see your setup

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    gn7
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    540 Bahner, are you aware that "to" is only one key stroke more than"2". Damn the shit is hard to read. TTFN, your BFF.



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    sorry gn7 (too) much time texting while driving the big truck in los angeles produce market trying (to) keep the message's short so i dont run someone over can't help it anymore even when im home sittin in my chair with the laptop lol

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    can anyone tell me if i keep my side tanks wut to do with the bypass off the regulator can i loop it into the inlet of the pump or does it have to go back to the tank

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    Senior Member TwinTurbo540's Avatar
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    I run another Y block and return back to both of my tanks, I have heard of some guys returning it back to the pump inlet as well. Then again I am not belt driven, I run an Aeromotive Eliminator pump.

    The set up that IMPATIENT1 decribed is a great set up and easy on the pocket.

    Travis
    Last edited by TwinTurbo540; 07-12-2010 at 10:47 PM.
    I like my women like I like my boats......Fast and ready to get wet at all times!!

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    does your setup return to the tanks equally i was thinking of doing it that way but i was afraid it might return more to one tank than the other thanks for the input though im getting ready to break the bank for labor day are you comming here to the potholes this year thanks travis.....

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    Senior Member TwinTurbo540's Avatar
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    So far it has been returning eqully to each tank, you can also run a ball valve on the the return and feed on each tank to move fual around if need be. My tanks were set up like this when I got the boat from Tony Skagen, I also needed it for the turbo set up. I just kept it the same way for the blown deal.

    Yes I will be at Mardon again this year, from spkane we are bringing my blown 19 daytona, a blown 18 cp, a blown 20 baja and two nitrous 21 daytonas.

    Travis
    I like my women like I like my boats......Fast and ready to get wet at all times!!

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    I ran pretty much the same setup as you, except I had a Comp 250,
    AND I welded 1/2" outlets in the bottom rear of my tanks, and used the old 1/4" suction top feed holes for my returns. I think the larger bottom fed outlets were the key. never a fuel system problem in the 10 yrs I ran
    that setup (2 doms also)

  16. #14
    TJS
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    I run EFI and return to one tank from the regulator. I made a cross over balance line between the tanks so they act as one. This elimates the ball valve as well which allows me to pull only from one tank too. When I fill the tanks all I have to do is also fill one of them and they both fill up. This is nice. I also have huge pickups tubes that I made that run -12an lines to the large fuel water seperator and then -10an to the injector plate inlet on the blower. Works great and have not had one issue in 2 seasons already.
    T.J.

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