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porsche4me's Avatar
 
Join Date: Jul 2002
Location: Savannah
Posts: 151
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Need help to design a fuel set-up

Need help to design a fuel set-up

Here is what I have - 1974 race car body - 1973 2.0 liter very stock inside - pair of p11 (40) solex carbs - 16 gal fuel cell - and a VERY TIGHT BUDGET -

I think I want 2 cheap fuel pumps on board - flex lines thru the heater duct area - and CHEAP - the fuel cell has a -8 an outlet -

how many feet of what size line - how to put 2 pumps in series - how much pressure - how many GPH flow rate do I need - cheap parts I can use ......

this car is for the ChumpCar World Series racing series of low cost, LONG endurance races -

thanks for y'alls help - live in Savannah but NOT from here
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1977 911S Coupe
Stolen - car chase - in the river - pulled out - sold to me!!!!!
"Life is running hurdles in the dark"
Old 07-01-2010, 10:33 AM
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John Rogers's Avatar
 
Join Date: Dec 1969
Location: chula vista ca usa
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When I setup my vintage 914 I ran stainless 3/8 tube through the tunnel and used the same holes the stock plastic tubing used. I felt the fuel line should be in the center in case of a side impact as it is safest. I used one high capacity pump which more than made enough flow although if your engine is stock you could run two of the little cube pumps in parallel in case one dies. I don't remember that ever happening in any of the races I was in, nearly 12 years worth as usually there are enough other things to break first.
Old 07-01-2010, 11:35 AM
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porsche4me's Avatar
 
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Do you know flow rate - psi - did you run carbs ???
I want to have a 3 way switch for the little fuel pumps - run #1 or #2 or neither.
I understand the point about running down the middle - but I don't want it next to me - could get damaged but not next to me.....
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1977 911S Coupe
Stolen - car chase - in the river - pulled out - sold to me!!!!!
"Life is running hurdles in the dark"
Old 07-01-2010, 12:06 PM
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Join Date: Jan 2004
Location: Northern Virginia
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iirc, carbs only need about 3-4psi compared to the 35psi or so of the FI car.

Also, in an "early" 914, the fuel pump is located in the rear of the car. In later cars, its located in the front trunk.
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1970 914-6
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2000 Boxster 2.7, 1987 944
1978 911SC, 1976 914 2.0, 1970 914 w/2056
Old 07-01-2010, 03:04 PM
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Join Date: Dec 2002
Location: Dahlonega , Georgia
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I have a Facet fuel pump ( used but works ) for $15.00 if interested. This is the small cube sized fuel pump.
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2002 Boxster S . Arctic silver + black top/int. Jake Raby 3.6 SS engine " the beast ". GT3 front bumper, GT3 side skirts and GT3 TEK rear diffuser.
Old 07-01-2010, 04:28 PM
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