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Fuel Pumps Questions.

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Old 10-26-2004, 11:13 AM
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Default Re: Fuel Pumps Questions.

GLH,

I will try to post a pic of my set-up this weekend. I have a stainless manifold that is screwed into the stock pump that also allows me to plumb in an electric pump. They both work together so I never have a pressure or volume drop. I am running a Whipple and I am feeding a big 850 carb.

Dave
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Old 10-26-2004, 02:01 PM
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Default Re: Fuel Pumps Questions.

Quote:
Originally Posted by sutphen30
look at your fuel pump push rod and or cam shaft bump that activates it,it might be wearing and not giving the pump arm enough motivation,i mean thrust,i mean arm movement. fuel pump arm that is.
I had those changed too, it was not the culprit.
I hate to quote Clinton but "are you feeling my pain!"
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Old 10-26-2004, 02:06 PM
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Default Re: Fuel Pumps Questions.

Quote:
Originally Posted by Bigwavz
I will try to post a pic of my set-up this weekend. I have a stainless manifold that is screwed into the stock pump that also allows me to plumb in an electric pump. They both work together so I never have a pressure or volume drop. I am running a Whipple and I am feeding a big 850 carb.
I would like to see that Dave thank you. Where did you get the manifold?

BTW I'm feeding twin Holleys 700 CFM's per mills, and feeding is definitely the apropos term!

More motivation for the contributers, this is broadening my minimal knowledge thanks!
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Old 10-26-2004, 02:47 PM
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Default Re: Fuel Pumps Questions.

GLH-

I got the manifold from Dino at Teague marine. I will get you a pic by saturday night.
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Old 10-28-2004, 11:07 PM
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Default Re: Fuel Pumps Questions.

pick up's, pump's and dont forget to check your fuel tank nent's. Hey one sick glad, what kind of speeds are you running, and what props? i am just about done re-rigging an 04' glad , richie builtthe power originally, and this time out we upped the power to just over 750, by zul of course. the input would be appreciated.


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Old 10-29-2004, 09:37 AM
  #26
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Default Re: Fuel Pumps Questions.

Quote:
Originally Posted by sutphen30
i meant before,check for cam wear,lobe might be going away.
I changed those also.

More motivation....
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Old 10-29-2004, 09:39 AM
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Default Re: Fuel Pumps Questions.

The heartbeat of america!!
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Old 10-29-2004, 03:22 PM
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Default Re: Fuel Pumps Questions.

I have been through most of the mechanical fuels pumps with many of the posted hassles. This includes that new Holley mechanical 20 series. I found a great solution. The CV Products custom billet mechanical pump with the 7.5 lbs. spring holds 6 lbs.+ steady at 6800 RPM on 780 hp. This pump eliminates the need for re-rigging, fuel pump auto shut off requirements, fuel returns or pressure regulators. I tapped the top of the CV pump and installed a barbed fitting to provide for an over flow to the carb.
Downside? It is a little pricey, but not as costly as the alternatives.
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Old 10-29-2004, 09:58 PM
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Default Re: Fuel Pumps Questions.

GLH:: I have the same setup from the factory,,, Stock Merc 600sc 1997 year.... Factory put both the Elec and the Manual pumps on with a tee in the supply line, then a pressure Gage on the the fuel rail at the Carb.. I was getting bad readings at the Gauge so I installed a Liquid Pressure Gauge with Regulator at the Carb.. with this setup I have as much pressure as I want ,,, Have seen 10-11 lbs when doing the adjustments ,,, I set the reg at 7-8 and it will maintain 5-6 at wide open ,,, Keep it simple and make sure that U have no restrictions..

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Old 10-30-2004, 06:39 AM
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Default Re: Fuel Pumps Questions.

To build on what 42MTI said (Post #8),the 800SC & 900SC use a different pump (p/n 821031) than the 600SC. After following 'more motivation', we're all probably thinking, who cares?
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