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 Post Posted: Wed May 11, 2011 8:41 am 
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Now I'm running gas with just a Holley blue pump and a 850 carb on a 415 SBC
A friend has a alky carb for sale that he has ran so should be good to go.
What are you guys using for pumps?
Do you guys run any kind of return on your fuel or a bypass regulator?

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 Post Posted: Wed May 11, 2011 10:35 am 
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i run a magnafuel 300 pump that has a bypass on the pump, my cutlass runs 6.40s in the 1/8. when i changed to alcohol i sent my gas carb to george rupert to have it converted, all i had to do was set the fuel pressure and go. by far the best improvment i ever made.


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 Post Posted: Wed May 11, 2011 2:15 pm 
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give a pm to Nightstalker, from what I read on here he is quite knowledgable in this area.

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 Post Posted: Wed May 11, 2011 6:41 pm 
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I run an A2000 Aeromotive pump. The pump has a return port on it thats runs to the cell. The regulator I am using is a magnafuel large 2 port and is deadhead.


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 Post Posted: Thu May 12, 2011 5:54 am 
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Just became an alcoholic and it was plug and play. Not using the pump by-pass, going to a fuel log w/ a regulator at the end back to the tank.


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 Post Posted: Thu May 12, 2011 9:08 am 
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Good info.
From what I've been reading, you need low(9) psi at idle and high (12) wide open.
Is this true?
If so, how are you doing it?
I can understand doing this with a manual pump, more RPMs=more psi.
But with an electric pump I don't see how.
The 1:1 Vacuum referencing regulator?
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 Post Posted: Thu May 12, 2011 9:22 am 
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rupert sets his stuff up to run 7 1/2 lbs of fuel pressure all the time. the circle track guys use the low and high pressure mostly. what was the setup on the car this carb came off of ? differant carb builders like differant fuel pressure, you might see who built the carb and see what they recommend.


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 Post Posted: Thu May 12, 2011 4:25 pm 
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mine is set at 7psi at the regulator on the fender. The regulator at the pump is set at 20. I have not looked at my pressure gauge at the big end to see what the pressure is but i dont have any issues running it this way.


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 Post Posted: Tue May 31, 2011 12:57 pm 
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lilbowtie wrote:
Just became an alcoholic and it was plug and play. Not using the pump by-pass, going to a fuel log w/ a regulator at the end back to the tank.


Just had an unbelievable week-end. Went to the finals on Sat (lost w/a red) Three rounds Sun before the rain (split) And won on Mon.


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 Post Posted: Tue May 31, 2011 6:16 pm 
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Good job. That's a good weekend.
6 1/2 to 7 lbs. fuel pressure with my Quick-Fuel alcohol carb. (ProStar 500 pump) Same pressure as I ran with gas.

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 Post Posted: Wed Jun 01, 2011 5:57 am 
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racecar77 wrote:
Good job. That's a good weekend.
6 1/2 to 7 lbs. fuel pressure with my Quick-Fuel alcohol carb. (ProStar 500 pump) Same pressure as I ran with gas.


THANKS - Dito the fuel pressure


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 Post Posted: Wed Jun 01, 2011 7:32 am 
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You'll like the change to alcohol from gas period! Not only is it less money to run on but for bracket racing it is deadly consistant once dialed in..
There's no magical set-up you have to do,,it's simple to change over from gas,,i.e no timing change needed,no special spark plugs,,( can use the same plug you been running with gas,but a hot plug is recommended) and there's no set fuel pressure for running alcohol.. If you have a good running pump with alot of volume you can run the pump as low as 4 psi as long as it keeps up with the motor..
A typically good or perfectly tuned running alky carb will gain 7-10* in water temp in a 1/4 pass and will NOT milk your oil!! It is recommended that you run a lean out valve to help build some heat at start up..
Most lower compression motors love alcohol as it'll raise the static compression in the motor and also raise the torque due to it's double the volume of race gas/fuel..
Don't fall into the maintence myths of you have to empty the fuel cell or carb after running or racing it for the weekend,etc.etc. just leave the cell and carb fuel of alky and go racing.. 8)

Congrats lilbowtie as it sounds like you were dialed in pretty well.... ;)

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 Post Posted: Wed Jun 01, 2011 7:34 am 
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Good info.
So the "two" fuel pressures is a myth?
Also, this may be to late since I've already bought it, but will this pump do what I need?http://maliburacing.com/forum/viewtopic.php?f=10&t=106252
What is a good temp rise in the 1/8?

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 Post Posted: Wed Jun 01, 2011 7:40 am 
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gman415 wrote:
Good info.
So the "two" fuel pressures is a myth?
Also, this may be to late since I've already bought it, but will this pump do what I need?http://maliburacing.com/forum/viewtopic.php?f=10&t=106252



gman,,yes the fuel pressures are just that a "MYTH",,,,,UNLESS your going to run a belt drive pump system which isn't really needed for what your doing.. :mrgreen:

And yes that pump will work perfectly.. 8)

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