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Senior Member
Join Date: Apr 2001
Location: Finland
Posts: 1,214
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How much does the CIS pump put out ?
What are the specifications CIS fuel pump has?
PO had it with carbs, it worked "allright", so not much pressure there then eh? The thing is that I have semi-working EFI (MegaSquirt) in my car and I was running with -71 914 fuel pump and the pressure is not good enough. I just can't get the pump to give more than 2.5 bar at idle, and when I start to accelerate, the pressure drops to 1.5 or near 1, this causes the fuel mixture to go too lean.. I have one 911 CIS pump in my garage and was wondering if this would give more juice? What is the fuel pumping capacity and pressure CIS has? Thanks
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Projects: 911 -72T EFI "964-look" "Smoky" 914 -71 1.7 D-JET "Rusty" |
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05-16-2005, 02:06 PM
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Designer King
Join Date: Mar 2004
Location: Toronto, ON Canada
Posts: 5,499
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CIS fuel pressure should be 65-75 psi (4.5-5.2 bar).
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Paul Yellow 77 Sunroof Coupe/cork interior; 3.2L SS '80 engine/10.3:1/No O2; Carrera Tensioners; 11 Blade Fan; Turbo tie rods; Bilstein B6; 28 tube Cooler; SSI, Dansk; MSD/Blaster; 16x7" Fuchs/205/50 Firestone Firehawk Indy 500s; PCA/UCR, MID9 Never leave well enough alone |
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05-16-2005, 02:11 PM
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Registered
Join Date: May 2000
Location: Los Alamos, NM, USA
Posts: 6,044
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Output depends on year. Off the top of my head: '73.5-77 CIS 911's required 1.7 liters per minute and 79-83 SC's required 2 liters per minute.
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05-16-2005, 02:18 PM
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