WUR ref nbr???

[dede911]

Hi Guys,

As stated in a previous post, I decided to make my WUR adjustable to solve cold start surging, and very light stumble around 2000 RPM...

Car is a 1982 euro SC

Tonight I removed the Wur (one bolt broke of) . I alway was sure that the bosch ref nbr was 0 438 140 069, but after cleaning and with very good light, I was amazed to find out that it has ref nbr 0 438 140 089.

I can not find this nbr in my P manual, neither on the internet...

Questions:

Does somebody has data about this WUR?

I think I can use this WUR if I can set it to the disired pressures...
What would be my ideal pressures? same as for the -069 WUR?

To give more testing info:
Temperature 10°C
CCP (engine not running) 0,7 bar
CCP engine running, vac connected 1,2 bar and thermovalve open.

Help would be very appreciated

André

[spuggy]

According to p122 of the Bosch EFI vehicle cross-reference document, that is the correct WUR for a February 1980-on SC.

[boyt911sc]

Andre,

From a reference booK:

Porsche 911 3.0 SC's EURO (July '80 to July '83) have WUR 0-438-140-089. You have the correct WUR.

Tony

[dede911]

Hi,

Thanks for the check about the ref nbr.

Can somebody give me the cold control pressure with or without vacuum, as well as the warm control pressure?

That would help me a lot with adjusting the WUR

André