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Post Info TOPIC: NOS oil pressure sender
unruhjonny


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NOS oil pressure sender
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I am looking for an opinion here.

I recently bought an NOS oil pressure sender;
I found it through a facebook group, and when I initiated contact this sender was being purported as an 80psi unit with a different part number than what GM used as OE for many vehicles;
This is the older large cannister style with a stud to attach the prong for the oil pressure gauge lead.

In the interim, it appears as though this guy was corrected, and told that these are 60psi senders, and I can now see that he has revised his ad to show that they are 60psi units.

I reached out to him, and he has offered to refund me.

I am wondering if there is a way that we can better the situation, because by the time I return it, we will both be out shipping.

I found that the guy has also since listed these on eBay:

https://www.ebay.com/itm/353280289554

Do any Beaumonts use these, or employ 60psi gauges?

I would guess that if I ran this on my car, at 60 psi it would peg out my gauge to 80;
I am earnestly looking for an upside here;
A part of my hesitation is that this sender is a dead ringer for the original, very valuable sender for my car, and it looks beautiful.
I am into this sender for $50usd.



-- Edited by unruhjonny on Saturday 5th of December 2020 01:17:24 PM

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1970 Formula 400
Carousel Red on black (std) interior
"no drivetrain option" car (same base drivetrain as GTO)
1:411 1970 Firebird Formulas originally sold in Canada

Luke 23: 39-43 / Ephesians 2: 8-9  / 1 Corinthians 2:12-14 / 2 Timothy 3:1-5;12
73SC


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I don't know if this will help or not but I did a bit or research on this when I swaped the 454 into my LeMans. I found that most Chevy sensors were mostly 60 psi but my Pontiac guage cluster did read to 80 psi so I searched out some NOS 80 psi sensors and used them, I even found that the later model Pontiac/Olds 403 sensor was a 80 psi canister with blade style connector so I bought a few NOS to have just in case. 

So I found that Chevy's usually are 60 psi, that being the case then I would think there would be a lot of people on this forum that could use the 60 psi given that Canadian Ponchos run Chevy engines.



-- Edited by 73SC on Saturday 5th of December 2020 01:49:25 PM

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Ray White, Toronto ON

Formerly - The one and only 1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

Built January 10, 1993 - Bowling Green Kentucky 

 
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seventy2plus2


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I've got a couple sending units with blade connectors to use with a Pontiac Ralley gauge cluster. I'll post photos to see if anyone can identify them as 60 or 80 PSI.

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unruhjonny


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/\ they are all stamped with their respective calibration

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1970 Formula 400
Carousel Red on black (std) interior
"no drivetrain option" car (same base drivetrain as GTO)
1:411 1970 Firebird Formulas originally sold in Canada

Luke 23: 39-43 / Ephesians 2: 8-9  / 1 Corinthians 2:12-14 / 2 Timothy 3:1-5;12
seventy2plus2


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Here's what I have, any comments?    I see the Borg-Warner box says Pontiac 70-79 w/gauges.

Oil Pressure Sending Units.jpg

The only stamping (other than Made is USA on the Borg-Warner, and Patent # on the Neihoff) is P5 N on the Neihoff.  Both look like they were possibly installed on an engine as there's some marks where a wrench was used, and some evidence of the electrical terminal being connected.  But the body of each is very nice.



-- Edited by seventy2plus2 on Saturday 5th of December 2020 07:44:47 PM

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DonSSDD


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I have a question about how these senders work, they are converting a physical oil pressure to an electrical pulse for the gauge so would the canister not have to match the gauge calibration?

In old chevies with a temperature gauge like my 59, the sensor in the intake has to match the gauge and some people buying reproduction intake sensors have a problem with the sensor not reading correctly due to the gauge and sensor not matching. Potentially the same issue here for an eighty and a sixty lb sensor and gauge?

Similar issues with reproduction fuel tank senders.

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cdnpont


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Are they not a variable resistor to ground, same basic principal as the fuel sender? Must be in the applicable range for the gauge. 



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65Camino


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On the nut used to tighten is where they are stamped. Either 60 or 80.

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seventy2plus2


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65Camino wrote:

On the nut used to tighten is where they are stamped. Either 60 or 80.

The only stamping on the nut is "P5 N" on the Neihoff.  



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70 2+2 convertible
70 2+2 hardtop
70 Parisienne hardtop

 

 
73SC


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DonSSDD wrote:

I have a question about how these senders work, they are converting a physical oil pressure to an electrical pulse for the gauge so would the canister not have to match the gauge calibration?

In old chevies with a temperature gauge like my 59, the sensor in the intake has to match the gauge and some people buying reproduction intake sensors have a problem with the sensor not reading correctly due to the gauge and sensor not matching. Potentially the same issue here for an eighty and a sixty lb sensor and gauge?

Similar issues with reproduction fuel tank senders.

 This is why I got an 80 psi for my Pontiac Cluster. It still threads into the 454 BBC opening even though it is listed as a 80 psi for a later 403 Olds/Pontiac. I'd be concerned if my cluster read to 60 psi and I was putting in an 80 psi sensor for example and vice cersa.



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Ray White, Toronto ON

Formerly - The one and only 1973 LeMans 454 "Astro-Jet"

Built March 9, 1973 - Oshawa ON

1993 Corvette Convertible LT 1

Built January 10, 1993 - Bowling Green Kentucky 

 
SDriver


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If you have compressed air and regulator, couple the sensor toair hose (regulated) with 1/8" NPT and ground to block or steering column with sender wire attached and see if the sender arees with your dash gauge. This way you can check both at various pressures without installing.

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unruhjonny


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seventy2plus2 wrote:

Here's what I have, any comments?    I see the Borg-Warner box says Pontiac 70-79 w/gauges.

Oil Pressure Sending Units.jpg

The only stamping (other than Made is USA on the Borg-Warner, and Patent # on the Neihoff) is P5 N on the Neihoff.  Both look like they were possibly installed on an engine as there's some marks where a wrench was used, and some evidence of the electrical terminal being connected.  But the body of each is very nice.



-- Edited by seventy2plus2 on Saturday 5th of December 2020 07:44:47 PM

This is the more common one that superseded the OE senders;
These typically have the rating stamped in very small font on one of the nut faces right above the thread.
These are functionally identical to what my car used, but aesthetically different.
I am shooting to have my car as correct as possible, with a theme of correct looking parts in place when ever possible.



__________________

1970 Formula 400
Carousel Red on black (std) interior
"no drivetrain option" car (same base drivetrain as GTO)
1:411 1970 Firebird Formulas originally sold in Canada

Luke 23: 39-43 / Ephesians 2: 8-9  / 1 Corinthians 2:12-14 / 2 Timothy 3:1-5;12
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