Oil Pressure Switch/Sending Unit with only one prong?

[gordyzx9r]

I replaced my gauges with Stewart Warner gauges years ago...when I did that, the kit came with an oil pressure switch (sending unit?) that only had one prong for a wire as opposed to the stock ones with three prongs(?). 

Where can I find one of these one prong switches that will fit a turbo regal?

My oil pressure gauge is reading 15 PSI low, which made Bill real worried until he hooked up an under hood gauge.

[SuperSix]

All aftermarket only have one wire (Like my VDO) - the stock unit also functions as a switch for the fuel pump relay as well, hence the need for more wires.

I would assume you have to get the same model as the one you are replacing, or a current replacement that has the same range/output. Can you see a model #/etc on the old unit? Is your builder SURE his is accurate? The gauge may be the culprit too.

[gordyzx9r]

All aftermarket only have one wire (Like my VDO) - the stock unit also functions as a switch for the fuel pump relay as well, hence the need for more wires.

I would assume you have to get the same model as the one you are replacing, or a current replacement that has the same range/output. Can you see a model #/etc on the old unit? Is your builder SURE his is accurate? The gauge may be the culprit too.

Yeah, he's sure.  I'll have to wait to see it up close if I can get some numbers off of it.  He can't see anything.  I kept the instructions from gnxdash.com (Performance Instruments), but it doesn't give any details about the make or model of the switch in the kit.

[Steve Wood]

all you have to do is buy the brand that matches the gauge...usuall y there is a difference between the one for a full sweep gauge and one for a 180 deg gauge...that is all you have to check

[gordyzx9r]

all you have to do is buy the brand that matches the gauge...usuall y there is a difference between the one for a full sweep gauge and one for a 180 deg gauge...that is all you have to check

Hate to be a pain, but what does that mean? The gauge manufacturer sells them?

[Steve Wood]

If autometer, or whatever, go to summit or whereever and look for the sender that matches the gauge you have.

they sell the senders independently as well as packaged with the gauges...

tell me the brand and if it is 180 degs or full sweep...I will find it for you

[gordyzx9r]

Not sure what you mean by 180 degrees or full sweep.  I'm trying to post a picture of it but I keep getting the damn internal error here.  And File Den is down...

Here is a link to the photo on my google documents:

https://docs.google.com/open?id=0B1g22ACgB9mRMzQ0OWFiNWQtNDhlZS00Mjg2LTk1NzItYzUwM2FlNDM5Y2Ex

[daveismissing]

The tach is a full sweep ~270deg.
Your pressure gauge is 180 (or less)
Steve suggests the senders may be different betwixt the two.

[SuperSix]

Looks like a 90 degree.

http://www.summitracing.com/parts/SWW-279B-F/

http://www.summitracing.com/search/Brand/Stewart-Warner/Part-Type/Gauge-Sending-Units/?keyword=oil+pressure

[Steve Wood]

it's what I call a 180 instead of a full sweep...autome ter calls them short sweep

But properly, the needle moves about 90 degs so I guess that is the right description.

According to the SW site, this is the right sender   http://www.summitracing.com/parts/SWW-114875/

http://www.sw-performance.com/index80a3.html?page=details&p=114875

kinda strange because summit also shows a different number for the sw senders as well.  Need to check that other summit number and cross back, I guess

Autometer uses a different sender for a full sweep (270 deg) gauge than they do for the 90 deg and it costs a lot more.

[gordyzx9r]

Do I need to order thread adapter fittings for it as well?

[Steve Wood]

shouldn't it be the same as the one you took out?

[gordyzx9r]

shouldn't it be the same as the one you took out?

I guess we'll find out...the car is in another state, having it shipped there.

[Steve Wood]

all the SW senders seem to be the same threads

only thing that I am confused on is any difference between these two

http://www.sw-performance.com/indexf351.html?page=details&p=279B-F

and the one I listed above  http://www.sw-performance.com/indexf351.html?page=details&p=279B-F

summit has them both...might be a question for SW if no one here sees a difference....

[daveismissing]

Doesn't help they have two web sites:

That series is not shown here:
http://www.stewartwarner.com/Catalog/sdrpress.html


both shown here:
http://www.sw-performance.com/products/SDRPressure.html

I don't see a difference so far