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930s rule the wasteland
Join Date: Dec 2006
Location: Spotsylvania ,Virginia
Posts: 1,219
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System pressure?
65 psi to low for system pressure if so which pump should I start with front or rear?
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1980 930 Turbo 1993 Corrado 1983 944 1984 944 2001 VW golf TDI |
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01-22-2009, 08:38 AM
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Infidel
Join Date: May 2006
Location: UK
Posts: 1,172
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Where are you checking it? You can raise/lower the system pressure by adding/removing shims in the fuel head
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Jonathan. 87 930, 993 turbo engine, RS Tuning 520PS/515lbf-ft, Arrow Rods, ARP hardware, Solid lifters, G50-50, RS Flywheel, 890nm Sachs clutch, RSR coil overs all round, 993 C4 calipers front, 930 fronts on the rear, Ruf Speedlines..... Old 540 BMW, XB12S Modified, for being a total hooligan 
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01-22-2009, 10:50 AM
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930s rule the wasteland
Join Date: Dec 2006
Location: Spotsylvania ,Virginia
Posts: 1,219
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Between the fuel head and the warm up regulator the manual says 6 bar to 6.7 for system pressure. Im going by the factory manual, and just had fuel head remaned to stock specs.
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1980 930 Turbo 1993 Corrado 1983 944 1984 944 2001 VW golf TDI |
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01-22-2009, 04:10 PM
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Crotchety Old Bastard
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System pressure needs to be ~85psi or so. Start with the fuel filter.
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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds '78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8 |
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01-22-2009, 04:22 PM
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930s rule the wasteland
Join Date: Dec 2006
Location: Spotsylvania ,Virginia
Posts: 1,219
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I replaced the fuel filter, I added shims and the pressure still will not go up! i took the relay out of pump 2 and the 1st pump sounds good. I put back relay 2 and removed relay 1 and the 2nd pump sounds like crap!
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1980 930 Turbo 1993 Corrado 1983 944 1984 944 2001 VW golf TDI |
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01-23-2009, 03:58 PM
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78 Porsche 911SC 3.0L, 3.3Turbo soon. 
