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Join Date: Oct 2007
Location: Metro Detroit
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930 fuel sensor question

Does anyone know if there would be any operational issues with running a 3.3 liter fuel sensor and fuel distributor on the earlier 3.0 930 engine? If so, what might those issues be and can they be adjusted/corrected without having to locate/purchase the correct 3.0 liter version?

Old 12-30-2016, 09:25 AM
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probably not but you will be the one to find out.
you need the WUR to go along with the fuel distributor or you need to make the WUR adjustable so you can set the CP's to match the FD you have. start with factory spec pressures.
i would do some research and find out about the FP's you have as far as pressure and volume to see if they will work with the FD.
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86 930 42kmiles [__] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD
88 BMW 325is 200K+ SOLD
05 BMW 330CI 130K:: [__] RUNNING: [__] NOT RUNNING:
08 VOLVO V70 190K:: [__] RUNNING: [__] NOT RUNNING:
90 B2200[__] RUNNING:[] NOT RUNNING:__2000 MER E320 WAGON [] WRECKED:[]RUNNING:
Old 01-03-2017, 06:00 AM
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What do you mean by the fuel sensor? I've never heard of one on a car that runs on gasoline only.

I think the early cast iron 930 fuel heads are all the same. Same goes for CIS injectors. They all flow the same if the internal fuel filter fine screen and pintle tip and seat is clean. The only difference is the part numbers for different years.

The later aluminum fuel heads are a little different and superior in all respects because they use a flexible rubber diaphragm installed dry with no sealant instead of a stiff stainless steel diaphragm that needs special sealant carefully applied (not too much because of internal squeeze out in the wrong places and not too little or you have fuel leakage) to both totally clean cast iron fuel head halves right before screwing them together with a totally clean non dimpled stainless steel diaphragm sandwiched in between them.

The aluminum fuel heads also don't rust inside in the bottoms of the lower chambers from todays E10 gas ethanol/water phase separation and the cast iron ones will.
They weigh around 4 pounds less too.

When rebuilding them buy the latest Salvox rebuild kits with ethanol tolerant rubber diaphragms and o-rings.
Rebuild instructions ---CLICK HERE FOR FULL INSTRUCTIONS --- - salvox
The lowest prices and easiest way to order the Salvox fuel head rebuild kits is on Ebay.
Old 01-03-2017, 08:59 AM
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I took it to mean the AFM/fuel dist.

Q fro jim, are all the AFM's the same as far as the later USA version compared to the euro version
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86 930 42kmiles [__] RUNNING:[__] NOT RUNNING: ____77 911S widebody: SOLD
88 BMW 325is 200K+ SOLD
05 BMW 330CI 130K:: [__] RUNNING: [__] NOT RUNNING:
08 VOLVO V70 190K:: [__] RUNNING: [__] NOT RUNNING:
90 B2200[__] RUNNING:[] NOT RUNNING:__2000 MER E320 WAGON [] WRECKED:[]RUNNING:
Old 01-03-2017, 10:27 AM
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I think the early 930 and later 911 turbo cast aluminum and magnesium air flow meter housings are the same with the same size and shape venturi cone for the air flow sensor plate and air exit hose connection on the side.

The ones used on the 934 had a different sensor plate with a pointed cone on top, probably a different venturi cone for the sensor plate, and the air exit on the bottom side kind of the like one from a Mercedes 450 or 500SL that fed air down to the V8 intake manifold under it.

Old 01-03-2017, 10:51 AM
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