Feeding the little monsters
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Feeding the little monsters

  1. #1
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    Default Feeding the little monsters

    You guys may remember I had a lean pop at near full throttle last season. The recommendation was made to eliminate one of the fuel filters, take out the sintered bronze filters in the carb, and eliminate the 90 I had right before the regulator...oh...and get one of those volumax regulators.

    I am in the process...starting to fit the regulator last night.

    Couple questions though...

    my fuel pump looks like this: (with out the vent)


    1) How do I know its time for a rebuild?
    2) Is it worth rebuilding (it has a 1/2in IN 1/2in OUT)
    3) Should I just suck it up and get a Race Pump (http://www.summitracing.com/search/B.../?autoview=SKU)

    If the answer to #3 is yes...will it work with the Volumax regulator I just got?

    This is a drawthru turbo system making about 10lbs on a 468 Chevy Jet boat.

    Thanks all!

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    I would go with the new one -probably what I will do this year too just my 2 pennies

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    Quote Originally Posted by terrible_buddhist View Post
    You guys may remember I had a lean pop at near full throttle last season. The recommendation was made to eliminate one of the fuel filters, take out the sintered bronze filters in the carb, and eliminate the 90 I had right before the regulator...oh...and get one of those volumax regulators.

    I am in the process...starting to fit the regulator last night.

    Couple questions though...

    my fuel pump looks like this: (with out the vent)


    1) How do I know its time for a rebuild?
    2) Is it worth rebuilding (it has a 1/2in IN 1/2in OUT)
    3) Should I just suck it up and get a Race Pump (http://www.summitracing.com/search/B.../?autoview=SKU)

    If the answer to #3 is yes...will it work with the Volumax regulator I just got?

    This is a drawthru turbo system making about 10lbs on a 468 Chevy Jet boat.

    Thanks all!
    looks like a big gph pump already, but if its suspect, replace it with a known brand and p# that way you can buy rebuild kits.

    no a racepump wont work with that regulator. save yourself a grip and jus buy a 170gph edelbrock mech fuel pump and use the regulator you already have. drawthru jus requires high volume, not high pressure. set the idle pressure at 7psi, call it good.

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

    Jetboatperformance.com

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    The clay smith pump is the best.

    Those things are so easy to rebuild.

    The 6 check valves are pretty much the only thing that goes bad on them. And debris in one of them is enough
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    how do I know if mine has gone bad?

    It is a Holley pump, I just can't find them being sold any more and can't seem to fund a part number on it.

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    Quote Originally Posted by terrible_buddhist View Post
    how do I know if mine has gone bad?

    It is a Holley pump, I just can't find them being sold any more and can't seem to fund a part number on it.
    That pump is the same pump as the Clay Smith, Edelbrock, BG, and C&S six valve pumps. Informaniac is right, they are virually bullit proof. If it pumps gas, its probably just fine. I have run those pumps 10-12 years. sometimes something get hung up in a valve, or the diaphram dries out and cracks. But the are tough pumps. Holley and Edelbrock no longer sell that pump. Don't ask me why. They are still available from BG and Clay Smith. And C&S sells the most kick ass 6 valve on the planet, but only for small block chevys.

    Everything you need to know about rebuilding one is right here:
    Edelbrock six valve rebuild instructions

    And you can get rebuild kits here. The 4402 kit fits that pump.
    C&S Rebuild kits

    If you have that pump, don't even consider a Race Pump.



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    Last edited by gn7; 11-11-2010 at 02:52 PM.

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    Quote Originally Posted by gn7 View Post
    That pump is the same pump as the Clay Smith, Edelbrock, BG, and C&S six valve pumps. Informaniac is right, they are virually bullit proof. If it pumps gas, its probably just fine. I have run those pumps 10-12 years. sometimes something get hung up in a valve, or the diaphram dries out and cracks. But the are tough pumps. Holley and Edelbrock no longer sell that pump. Don't ask me why. They are still available from BG and Clay Smith. And C&S sells the most kick ass 6 valve on the planet, but only for small block chevys.

    Everything you need to know about rebuilding one is right here:
    Edelbrock six valve rebuild instructions

    And you can get rebuild kits here. The 4402 kit fits that pump.
    C&S Rebuild kits

    If you have that pump, don't even consider a Race Pump.
    Why ,may I ask would you say this?
    If he has the extra cash and wants a pump that will handle his needs now and in the future then why not go with a Racepump & reg. ? Which Is what I would suggest he go with.
    http://www.racepumps.com/
    Last edited by Hass828; 11-11-2010 at 07:23 PM.
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    Not saying the racepump isn't a killer pump. It is. But if I had that pump I would use it until I need something more. He already has a regulator for it, and if it works, use it. I have a race pump. But the 6 valves are on the motor more often that the racpump is. I still don't trust the racepump totally yet. Learning to. But the very first one failed miserably, so I am a little leary. Did a 6 valve let you down at some point and thats why you don't like them?



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    Quote Originally Posted by gn7 View Post
    Not saying the racepump isn't a killer pump. It is. But if I had that pump I would use it until I need something more. He already has a regulator for it, and if it works, use it. I have a race pump. But the 6 valves are on the motor more often that the racpump is. I still don't trust the racepump totally yet. Learning to. But the very first one failed miserably, so I am a little leary. Did a 6 valve let you down at some point and thats why you don't like them?
    we fed a blown 540 at 14lbs and a 250hp shot of nitrous under the doms with nothing but a 170gph mech pump from edel, bout 120bucks, preset for 170gph at 7psi, no need for regulator dont get any easier than that.

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

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    Quote Originally Posted by IMPATIENT 1 View Post
    we fed a blown 540 at 14lbs and a 250hp shot of nitrous under the doms with nothing but a 170gph mech pump from edel, bout 120bucks, preset for 170gph at 7psi, no need for regulator dont get any easier than that.
    Stop horsing around and step up to something that moves some fuel. You may need it someday
    LINK: Holley pump



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    Quote Originally Posted by gn7 View Post
    Not saying the racepump isn't a killer pump. It is. But if I had that pump I would use it until I need something more. He already has a regulator for it, and if it works, use it. I have a race pump. But the 6 valves are on the motor more often that the racpump is. I still don't trust the racepump totally yet. Learning to. But the very first one failed miserably, so I am a little leary. Did a 6 valve let you down at some point and thats why you don't like them?
    Yes , one little piece of trash takes the whole thing down. Probably would do the same with the race pump. But I have ran the system one filter that Howard recommended and have yet to experience that problem.
    And for what its worth , I like the clay smith-eddy pump for a draw through or N/A deal but when you need more like with the blow through , its either the Race pump or a belt drive.
    The thing is that the racepump will bolt into the factory spot for the pump and deliver enough pressure & volume for any thing from mild to wild.
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    You do know you a boost reference the 6 valve very easily. Again, something Shelby did in '65 I agree though, the race pump and a referenced reg on a blow thru is the way to go. I already have more than enough belts on the pig now. And the dry sump is only going to make worse Of course, if it was a turbo, it would have one less belt



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    Default power valves ?

    if your carb(s) are not boost referenced to the power valve circuits and you are pulling enough vacumn under them, the power valves may be closing causing the lean out.

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    so how do I know if it needs to be rebuilt? I thought it had something to do with how long it held pressure after shut down.

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