Early NA 'reactive' oilpressure gauge sender info

Zed.
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Early NA 'reactive' oilpressure gauge sender info Feb 4, 2021 10:54:32 GMT wannabe, martiny, and 1 more like this

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Post by Zed. on Feb 4, 2021 10:54:32 GMT

reading ClubRoadster forums & tripped over some info on the Early NA 'reactive' oil pressure gauge senders, thought I'd share as it may come in usefull.

from the thread.

www.clubroadster.net/threads/my-custom-cluster-project.251714/

links to...

crowz.narmir.com/vehicles/1990-miata/miata-repairs/miata-oil-pressure-gauge/

Oil pressure sender on 1989-1994 models :

1990 manual says that for a sensor resistance to chassis ground of 52 ohms, the gauge should read 0 psi. For 41 ohms to ground, the reading should be 30 psi, and for 16 ohms to ground, the pressure reading should be 90 psi.

The resistance is 115 ohms when the engine is off, The resistance goes down as the oil pressure goes up. Its lowest value is around 13 ohms which corresponds to a reading of 90 psi on the oil gauge.

Another chart from the manual

0 = 52 Ohms
30 = 41 Ohms
90 = 16 Ohms

Typical readings :

15-28 psi @ 1000 rpm
43-56 psi @ 3000 rpm

in the thread theres another usefull image

www.clubroadster.net/threads/my-custom-cluster-project.251714/post-6234134

I'll add more if & when I find it

Rich.

Last Edit: Feb 4, 2021 10:55:38 GMT by Zed.

50 Shades of Silver. '91 NA6CE.

mighty5s.com/thread/2681/50-shades-silver-na-eunos

C20XE, 5.38:1 & 3J Lsd, Ohlins, stupidity etc.

Horney Boss Man All the gear and a vague idea. Posts: 3,796	Early NA 'reactive' oilpressure gauge sender info Feb 4, 2021 10:58:51 GMT via mobile Zed. likes this Quote Select Post Deselect Post Link to Post Back to Top Post by Horney on Feb 4, 2021 10:58:51 GMT Nice info. I had one of these on my V-spec and when I got my later 1.8 Mk1 it really annoyed me the gauche was now fake. Lol. Fakey in the mk3 as well I think.

Zed.
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Early NA 'reactive' oilpressure gauge sender info Feb 4, 2021 11:51:39 GMT Horney and dadbif like this

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Post by Zed. on Feb 4, 2021 11:51:39 GMT

Feb 4, 2021 10:58:51 GMT Horney said:

Nice info. I had one of these on my V-spec and when I got my later 1.8 Mk1 it really annoyed me the gauche was now fake. Lol.

Fakey in the mk3 as well I think.

electronic gauges are ~fake, if you want a real reading then need a bourdon tube pressure gauge...

although we all need to complicate things

Rich.

50 Shades of Silver. '91 NA6CE.

mighty5s.com/thread/2681/50-shades-silver-na-eunos

C20XE, 5.38:1 & 3J Lsd, Ohlins, stupidity etc.

Zed. Needs To Get A Life Smeg! Posts: 2,883	Early NA 'reactive' oilpressure gauge sender info Jun 3, 2021 7:21:11 GMT Quote Select Post Deselect Post Link to Post Back to Top Post by Zed. on Jun 3, 2021 7:21:11 GMT BOING? Rich.
	50 Shades of Silver. '91 NA6CE. mighty5s.com/thread/2681/50-shades-silver-na-eunos C20XE, 5.38:1 & 3J Lsd, Ohlins, stupidity etc.

atlex Global Moderator Excess 4x100 Detected. Posts: 4,878	Early NA 'reactive' oilpressure gauge sender info Jun 3, 2021 9:01:55 GMT Quote Select Post Deselect Post Link to Post Back to Top Post by atlex on Jun 3, 2021 9:01:55 GMT I love the idea of an oil pressure source in my cabin.
	4x 4x100 : Trubro Panda Smurf, RSA ITB of Great Honour, Carib Z-Touring and Silver K Frog

warpspeed New Here Posts: 95	Early NA 'reactive' oilpressure gauge sender info Jun 3, 2021 21:26:42 GMT atlex, dadbif, and 1 more like this Quote Select Post Deselect Post Link to Post Back to Top Post by warpspeed on Jun 3, 2021 21:26:42 GMT If you crash and burn, a bit of oil on your shoes will be the least of your worries.

dadbif Needs Gagging Posts: 1,605	Early NA 'reactive' oilpressure gauge sender info Jun 4, 2021 7:05:23 GMT via mobile Zed. likes this Quote Select Post Deselect Post Link to Post Back to Top Post by dadbif on Jun 4, 2021 7:05:23 GMT As long as your engine stops when you crash you will be fine...

wannabe Needs To Get A Life Posts: 3,185	Early NA 'reactive' oilpressure gauge sender info Jun 5, 2021 19:18:53 GMT gbuk and warpspeed like this Quote Select Post Deselect Post Link to Post Back to Top Post by wannabe on Jun 5, 2021 19:18:53 GMT Jun 4, 2021 7:05:23 GMT dadbif said: As long as your engine stops when you crash you will be fine... If it doesn't, you've clearly not crashed properly enough.

Zed.
Needs To Get A Life

Smeg!

Posts: 2,883

Early NA 'reactive' oilpressure gauge sender info Jun 5, 2021 19:56:40 GMT dadbif likes this

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Post by Zed. on Jun 5, 2021 19:56:40 GMT

Jun 5, 2021 19:18:53 GMT wannabe said:

Jun 4, 2021 7:05:23 GMT dadbif said:

As long as your engine stops when you crash you will be fine...

If it doesn't, you've clearly not crashed properly enough.

HAHAHAHAHAHAHAHAHAHA.

Rich.

50 Shades of Silver. '91 NA6CE.

mighty5s.com/thread/2681/50-shades-silver-na-eunos

C20XE, 5.38:1 & 3J Lsd, Ohlins, stupidity etc.

gbuk
Chats A Bit

Posts: 130

Early NA 'reactive' oilpressure gauge sender info Jun 5, 2021 21:28:26 GMT

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Post by gbuk on Jun 5, 2021 21:28:26 GMT

My very first car was a Vanden Plas 1275 which had a real oil pressure gauge which showed the pressure drop quite a lot once it got warm.
Had to bend the truth a bit on the test drive, when I sold it on, that it was always that good pressure

That's why I now have a nose worthy of Pinocchio and why I hate selling cars privately - after all how often can you honestly say there's a genuine reason for sale? Do folks still say that or am I really showing my age?

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