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lin7310948's Avatar
Join Date: Mar 2002
Location: easley, sc
Posts: 1,388
MFI to webers fuel pump location???

i know that there are numerous threads regarding converting from MFI to carbs, but i am uncertain as to which location is deemed the best for the fuel pump. i would rather mount in the rear location on my 72T but note that some prefer the front. would welcome any advice or experience with the rear location!!!!

71 911 all alum 434 sbc 585 chp 1959 austin healey bn-6 sbc zz4 motor 200r4 aod transmission......1959 Austin healey bn6 250 chev in line six cylinder, tremec 5 speed

Last edited by lin7310948; 07-13-2010 at 11:10 AM..
Old 07-13-2010, 10:52 AM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 15,716
Pushing fluid is always easier than pulling. Ideally, you would want the pump as close to the gas tank as possible.
Kurt V
No more Porsches, but a revolving number of motorcycles.
Old 07-13-2010, 11:19 AM
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Under the radar
Trackrash's Avatar
Join Date: May 2007
Location: Sebastopol, the land of wine and redwoods in The Republic of California.
Posts: 6,844
I'm running a Facet in the engine compartment.

It's mounted on my '71 with a 2,5 and Webers. No regulator.
Yea, I know now, it's not supposed to suck, but it does fine mounted like this. I installed this in 1983 more than TWENTY-FIVE years ago and it has run flawlessly ever since. That includes regular autocrosses and DEs.
'71 911 Coupe 3,0L outlawed
#56 PCA Redwood Region, GGR, NASA, Speed SF
Trackrash's Garage :: My Garage
Old 07-13-2010, 01:11 PM
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Join Date: May 2003
Posts: 3,326
I just kept the MFI fuel pump and filter console. I just tap into the "loop" that used to go to the belt driven injector pump with a regulator. Very simple set-up and easy to do. Just put a "T" fitting in the line that used to go to and from the belt driven pump. Attach a low pressure regulator to the T fitting and plumb the outlet from the regulator to the carbs. I used a low pressure Holley regulator that has one input and two outputs.


72 Carrera RS replica, Spec 911 racer
Old 07-13-2010, 02:33 PM
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