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Registered
Join Date: Jan 2005
Posts: 7
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930 Fuel Pump Option?
I continue to have fuel pressure issues with factory type fuel pumps. Does anyone know an option using an american made fuel pump with regulators and pressure guage to replace the 930 two pump system? I have heard of this being done, but cant find any info on it.
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06-19-2011, 05:40 PM
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Registered
Join Date: Jun 2005
Location: Colorado
Posts: 712
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If you're still running CIS there aren't too many pumps that can maintain the volume required at the 100+ psi pressure used by CIS. The main reason Porsche went with two pumps in series.
The stock system is actually pretty good, you just need to track down the problem. Could be plugged lines, plugged strainer in the tank, plugged filter, bad pumps, or even bad wiring and relays that don't let the pumps get the current they need.
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1986 911 Turbo 3.3L, K27HFS, Tial 46mm, TurboKraft Intercooler, 964 Cams, Monty Muffler, MS3Pro Evo, M&W Ignition, Zietronix WBO2 Data Logger, Wevo shifter, coupler and motor mounts. |
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06-20-2011, 11:24 AM
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Registered
Join Date: May 2005
Location: Loxahatchee, florida
Posts: 2,894
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any pumps you decide to replace use the Bosch 044 pumps, higher capacity and actually cheaper than the stock turbo pumps. Do a search here and you should be able to find the part number.
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88 turbo Guards red Targa slant nose, and yes I am a horsepower junkie, 3.4liter,7.5 to 1 JE pistons, Adjustable WUR, Imagine fuel head, 1 bar waste gate headers,allthe cis toys. Now apart to become the next EFI monster. fabbing my own intake, headers Individual throttle bodies, MS-3, pauter rods, Xtreme twin plugged heads, gt-2 evo cams cop's. 2019 Silverado 6.2L |
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06-20-2011, 01:41 PM
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Join Date: May 2005
Location: Atlanta GA
Posts: 627
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TurboKraft has the 044 adaptors...
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06-20-2011, 02:00 PM
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Registered
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 2,860
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Before replacing the pumps, check the voltage to each pump vs. battery voltage, and check the grounds.
Not saying the pumps aren't bad -- they're at least 22 years old -- but check their power supply first. We have had cars pass through the shop with Aeromotive pumps, but they are ridiculously noisy, and not a big cost savings.
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Chris Carroll TurboKraft, Inc. Tel. 480.969.0911 email: info@turbokraft.com http://www.facebook.com/TurboKraft - http://www.instagram.com/TurboKraft |
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06-20-2011, 02:58 PM
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Registered
Join Date: Jan 2005
Posts: 7
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Thank you all for your thoughts and guidance. It is appreciated.
Jim Kelley |
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06-20-2011, 03:39 PM
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the best part is that you only need one bosch 044 pump .
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1986 944 turbo -first car 1997 993 Cab 6 speed-sold 1992 964 C2 turbo SOLD, 911GT ,CIS, 428 fwhp 450 trq, Carrillo rods, 964 cams, TT retainers,7.5 comp 1.1 bar boost 320 ml black fuel head 009 injectors, 044 pumps, 60-1 T4/T3 dual scroll turbo |
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06-20-2011, 04:18 PM
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Turbofrog
Join Date: Aug 2009
Location: Europe
Posts: 1,677
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It's close to 7bar of fuel pressure that is needed. I would not run only one 044.
If EFI that's another case! |
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06-20-2011, 07:21 PM
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Blackbird
