What do I need to run an additional oil pressure gauge? Special fitting? Any links/product specifics would be greatly appreciated so I can source for my mechanic.
Thanks.
Haven’t done it on the E21 but on an Alfa I did a “T” fitting at the location the stock oil pressure sender is and (2) ss lines to run to the stock oil pressure sender and the other line runs to the new mechanical oil gauge.That way you maintain the idiot light.
Or you run (1) ss line from the stock mounting point of the sender point and then put a “T” on that line.to connect the stock sender and mechanical sender.
The size and tread pitch of the stock oil pressure sender I don’t know.
Last edited by msiert; 06-24-2022 at 11:10 PM.
Murray
Something like this to allow you to keep the stock oil pressure switch and add the new oil pressure sender: https://www.iemotorsport.com/product...eed-t-fitting/
Then the oil pressure sender and gauge like this: https://www.ecstuning.com/b-prosport...top270-12~psp/
The go-to brand seems to be VDO for the oil pressure sender and oil pressure gauge. There used to be BavAuto that sold a kit with everything for the E21 but they have been out of business for a few years now. Just double check the fittings are the right size before buying anything.
VDO Oil Pressure Gauges: https://www.vdo-gauges.com/instrumen...-pressure.html
VDO Oil Pressure Senders: https://www.vdo-gauges.com/sensors/p...tches.html?p=2
Can also google around for "bmw m10 oil pressure gauge" to get some ideas since a lot more 2002 owners with the same engine would come up in the results.
'81 E21 320i / '90 E30 325i / '̶9̶2̶ ̶E̶3̶4̶ ̶5̶2̶5̶i̶t (sold) / '15 Toyota XW30 / '̶̶8̶0̶ ̶E̶2̶1̶ ̶3̶2̶0̶i̶A̶ (sold)
Thank you! I should have clarified, I have the gauge, it’s a VDO. Don’t have the sender and fitting so looks like those are what I need to source. I want to keep the stock oil pressure switch so looks like I need the sender & fitting only. Need to check all the fittings that they are correct size.
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F87A72DA-34A1-48AA-B231-2F04E28CB26F.jpgA9D9A643-5515-4617-8073-719DAAAB2394.jpgIs this of any use. Good luck.
Is the VDO gauge you have a mechanical or electrical oil pressure gauge?
If you really want to know what your oil pressure is and does while driving go with a true mechanical gauge.
Last edited by msiert; 06-25-2022 at 09:01 PM.
Murray
7F609489-799A-4585-966F-785F479CDEA0.jpg
The picture shows that I mounted the stock sender and the mechanical oil psi gauge to the firewall in the engine bay. It used to be in the cab but since I don’t do time trials anymore I just use it to check the idle oil pressure at start up and after the drives.
With the mechanical gauge you just fasten the oil line to the gauge you don’t have that metal cylinder thingy. So you just need the “T” adapter and some ss line.
Last edited by msiert; 06-26-2022 at 12:22 AM.
Murray
I have the VDO fitting that allows use of the original pressure sender and also an additional port for your mechanical oil pressure gauge.
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