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Oil Pressure Sender


1972-2002

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So at the top right of the engine pic below is the distributor housing. On the top of it it is tapped out for a sending unit. Is it for oil pressure? I am sure someone is going to jump in and tell me to go to realoem and see it there. But there is nothing listed there for what goes in the hole. Can anyone confirm and maybe even get me a part number? I did search the archives but stopped after 5 pages. 

 

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Yes that is where the oil pressure warning light switch goes.  There were 2 different threads, cone course and one fine.  You can install a sender for a gauge there if you want to add a gauge.

1970 1602 (purchased 12/1974)

1974 2002 Turbo

1988 M5

1986 Euro 325iC

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And if you're not gonna fit a gauge and use the factory sender for the warning light, carry a spare.  They've been known to blow out, and if so you'll lose a significant percentage of your engine oil in about 30 seconds at highway speeds.  Even if you have a VDO gauge, I'd carry a spare factory sender;  I've had one VDO sender spring a leak already; glad I had a spare along...

 

mike

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If you want to keep your original oil pressure warning light functioning and add a gauge, you can install a "Tee" brass fitting.  

 

The part was available from the company that made Smiths gauges, and the part number was Smiths TP5.  Not sure if it's still available, but a substitute can probably be found in the plumbing aisle at a home repair big box store.

 

Regards, Maurice.

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For VDO and Motometer gauges there are senders wth two connectors - one for the gauge and one can be used for the standard warning light. Intended originally for use in race cars where many people place a big extra warning light on dash to not destroy their expensively built powerplants completely for just some oil leak.

 

Regards, Lars.

Ei guude wie? (Spoken as "I gooooda weee" and hessian idiom for "Hi, how are you?")

 

Já nevím, možná zítra.

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Good information regarding the two connector senders.  Didn't know they existed, but it certainly makes a lot of sense.

 

The "Tee" fitting is still useful for those who want a mechanical vs. electric gauge as a back up or for redundancy.  VDO makes (or used to make) a mechanical gauge that involves running a small diameter length of tubing from the Tee to the back of the gauge.

 

Regards, Maurice.

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Maurice,

 

here´s a link for those VDO senders with the second warning contact including resistance values at different pressures for the different scale instruments (german though).

 

http://www.druckgeber-oeldruckgeber.de/vdo-druckgeber-mit-wk-daten.html

 

Regards, Lars.

Ei guude wie? (Spoken as "I gooooda weee" and hessian idiom for "Hi, how are you?")

 

Já nevím, možná zítra.

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  • 6 years later...
On 2/8/2014 at 11:27 AM, schoir said:

Good information regarding the two connector senders.  Didn't know they existed, but it certainly makes a lot of sense.

 

The "Tee" fitting is still useful for those who want a mechanical vs. electric gauge as a back up or for redundancy.  VDO makes (or used to make) a mechanical gauge that involves running a small diameter length of tubing from the Tee to the back of the gauge.

 

Regards, Maurice.

 

What size of tee? 

 

Capture+_2020-03-31-08-18-38.png

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3 minutes ago, Robert Kyle said:

 

What size of tee? 

 

Capture+_2020-03-31-08-18-38.png

 

 

Good luck with finding a Tee, I've been looking for months and can't find one,  If anybody out there knows where to find one I'm also interested

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11 minutes ago, Robert Kyle said:

What size of tee? 

 

what size does your aftermarket sender require?

 

the stock hole/thread size for your '76 is listed above.

     DISCLAIMER 

I now disagree with some of the timing advice I have given in the past.  I misinterpreted the distributor curves in the Blue Book. 

I've switched from using ported-vacuum to manifold, with better results. 

I apologize for spreading misinformation.  

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