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Part No. For Fuel Distributor and Injectors...

 
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SprintStar  



Joined: 26 Aug 2003
Posts: 150

PostPosted: Sat Nov 08, 2003 6:31 am    Post subject: Part No. For Fuel Distributor and Injectors... Reply with quote

Hey Gang, can anyone throw up some numbers for the fuel distributor for the 931? Did they use the same FD all years of did they differ?

My friend's 931 is a '81 and mine's a 82. Else, these are dead ringer twins. But the part number for the FD is different. These 2 chicks are RoW cars so they don't have the O2 sensor...

Also, I found some injectors at my VW parts place going for cheap. Should I grab them? What part numbers are they?

Thanks for any info.

Have a nice weekend!!!

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MunkPuppy  



Joined: 02 Jul 2003
Posts: 419
Location: New Westminster, B.C., Canada

PostPosted: Sat Nov 08, 2003 10:09 am    Post subject: Reply with quote

If the injectors thread into the insulators, and meet 931 spec, then I'd say grab them.
Otherwise, the pressure from the turbo is going to blow the injectors out of your cylinder head!
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wdb  



Joined: 02 Nov 2002
Posts: 2024

PostPosted: Sat Nov 08, 2003 10:29 am    Post subject: Reply with quote

http://924board.org/viewtopic.php?p=68007&highlight=&sid=804f988d96ff059079209aefa8abc1d9#68007
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CMXXXI  



Joined: 05 Nov 2002
Posts: 1939
Location: Vicksburg, MS

PostPosted: Mon Nov 10, 2003 1:25 am    Post subject: Reply with quote

ROW '79-80 931.110.907.00 Bosch PN 0.438.100.047
ROW '81-82 931.110.907.02

US '80-82 931.110.907.01 Bosch PN 0.438.100.048

The airflow metering box is different between MY and markets too.

John at http://www.specialtauto.com/porsche-parts/index.html may be able to help you with other ROW spec Bosch PN and rebuilds.
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john h  



Joined: 06 Nov 2002
Posts: 827
Location: Wellington New Zealand

PostPosted: Mon Nov 10, 2003 2:49 pm    Post subject: Reply with quote

The bosch numbers for the fuel injection components are as follows:

931 ROW(from 1980 on) and Carrera GT Distributor block 0438 100 096
931 ROW and Carrera GT mixture control unit 0483 040 089
931 ROW and Carrera GT Fuel injectors 0437 502 017

931 US Distributor block 0438 100 048
931 US mixture control unit 0483 040 095
931 US Fuel injectors 0 437 502 017
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SprintStar  



Joined: 26 Aug 2003
Posts: 150

PostPosted: Thu Dec 04, 2003 3:15 pm    Post subject: Reply with quote

john h wrote:
The bosch numbers for the fuel injection components are as follows:

931 ROW(from 1980 on) and Carrera GT Distributor block 0438 100 096
931 ROW and Carrera GT mixture control unit 0483 040 089
931 ROW and Carrera GT Fuel injectors 0437 502 017

931 US Distributor block 0438 100 048
931 US mixture control unit 0483 040 095
931 US Fuel injectors 0 437 502 017


Ok.. I gotta ask, what's the different between the distributor block and the mixture control unit? Is the mixture control for Lamda? I assume the distributor block is the FD as in fuel distributor?

Thanks.

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CMXXXI  



Joined: 05 Nov 2002
Posts: 1939
Location: Vicksburg, MS

PostPosted: Fri Dec 05, 2003 7:47 am    Post subject: Reply with quote

The mixture control unit is the same thing as the air-flow sensor unit. It is the box that the fuel distributor (block) sits on, and has the round plate in it. That plate "floats" up and down as air passes and is attached to a lever that adjusts a plunger that is in the center of the fuel distributor. The plunger meters fuel going to the injectors.

The distributors and metering units differ between models and years, so you can't just arbitrarily take any one from one car and put it on another car and expect things to work properly.
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SprintStar  



Joined: 26 Aug 2003
Posts: 150

PostPosted: Fri Dec 05, 2003 1:56 pm    Post subject: Reply with quote

CMXXXI wrote:
The mixture control unit is the same thing as the air-flow sensor unit. It is the box that the fuel distributor (block) sits on, and has the round plate in it. That plate "floats" up and down as air passes and is attached to a lever that adjusts a plunger that is in the center of the fuel distributor. The plunger meters fuel going to the injectors.

The distributors and metering units differ between models and years, so you can't just arbitrarily take any one from one car and put it on another car and expect things to work properly.


Yup, I understand. And the difference comes from the way the funnel is shaped that allows the plate to be lifted differently at different air flow rates?

Perhaps we should try come up with a list of 'desirable' air-flow sensors. I've read in a Bosch book on modifying their systems and though the section on K-jet is very small, they mentioned swapping for flow.

Of coz mixing and matching is very important.

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CMXXXI  



Joined: 05 Nov 2002
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Location: Vicksburg, MS

PostPosted: Sat Dec 06, 2003 5:45 am    Post subject: Reply with quote

Also, some of the distributors have additional lines and sensors attached. Likewise for the air-flow units. Different years, different markets, etc.
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