Oil Pressure Sender
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My 1970 Plus 2S has a Smiths electrical gauge that reads 0-60psi. I need a new sender but can't find a 0-60psi one. I understand from some other threads these might be hard to get now. A quick search shows 0-100psi ones are plentiful.
Can anyone confirm that the sender thread size is 1/8" NPT? That seems to be to most common non-metric thread size for senders, but confirmation would be good.
Also, if I understand how these things work correctly, the sender will, for a given pressure, send a resistance reading that will cause the needle in the gauge to move a certain amount but I don't know if fitting a 0-100psi sender will cause my existing gauge to read correctly.
So, for example if a certain oil pressure causes a 0-100psi sender to send a resistance that would move the needle to the halfway point, that would be 50psi on a 0-100 gauge and presumably 30psi on my gauge.
have I understood this correctly? Any clarification or comments would be appreciated.
Cheers,
Andy
Can anyone confirm that the sender thread size is 1/8" NPT? That seems to be to most common non-metric thread size for senders, but confirmation would be good.
Also, if I understand how these things work correctly, the sender will, for a given pressure, send a resistance reading that will cause the needle in the gauge to move a certain amount but I don't know if fitting a 0-100psi sender will cause my existing gauge to read correctly.
So, for example if a certain oil pressure causes a 0-100psi sender to send a resistance that would move the needle to the halfway point, that would be 50psi on a 0-100 gauge and presumably 30psi on my gauge.
have I understood this correctly? Any clarification or comments would be appreciated.
Cheers,
Andy
Sept 1970 Plus 2S, KOO38J Glacier Blue, 50/2432 (was Carnival Red)
- Andy Hamblin
- Second Gear
- Posts: 96
- Joined: 17 Feb 2020
Andy, this thread has some information that might help
viewtopic.php?f=38&t=37144
Nissonger in the US lists a 0 to 60 psi sender, but unfortunately does not state the thread size
http://www.nisonger.com/XKE%20Replacement%20Gauge.htm
Same deal for Moss Motors, although they provide the Jaguar models that appear to have the 0 to 60 psi gauge range.
https://mossmotors.com/transducer-oil-pressure
In general it is my understanding that yes, the sender and the gauge range have to be matched for accuracy.
HTH
Stu
viewtopic.php?f=38&t=37144
Nissonger in the US lists a 0 to 60 psi sender, but unfortunately does not state the thread size
http://www.nisonger.com/XKE%20Replacement%20Gauge.htm
Same deal for Moss Motors, although they provide the Jaguar models that appear to have the 0 to 60 psi gauge range.
https://mossmotors.com/transducer-oil-pressure
In general it is my understanding that yes, the sender and the gauge range have to be matched for accuracy.
HTH
Stu
Stu
1969 Plus 2 Federal LHD
1969 Plus 2 Federal LHD
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stugilmour - Coveted Fifth Gear
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Thanks Stu, great info. Looks like it won't be straightforward!
Sept 1970 Plus 2S, KOO38J Glacier Blue, 50/2432 (was Carnival Red)
- Andy Hamblin
- Second Gear
- Posts: 96
- Joined: 17 Feb 2020
Andy
You need a new sender , do you have the old one ?
It may be repairable...
John
You need a new sender , do you have the old one ?
It may be repairable...
John
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john.p.clegg - Coveted Fifth Gear
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Or, contact Gavin Roberts of Caerbont Automotive Instruents - he is the Smiths agent in the UK.
[email protected]
[email protected]
Hal Adams
Evora S
Elan +2
Evora S
Elan +2
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HCA - Coveted Fifth Gear
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john.p.clegg wrote:Andy
You need a new sender , do you have the old one ?
It may be repairable...
John
That's the problem John, I think the old one is the wrong spec (0-100psi range).
But, on the offchance it is the correct one just malfunctioning, who can rebuild them and does it make economic sense to do so?
Sept 1970 Plus 2S, KOO38J Glacier Blue, 50/2432 (was Carnival Red)
- Andy Hamblin
- Second Gear
- Posts: 96
- Joined: 17 Feb 2020
HCA wrote:Or, contact Gavin Roberts of Caerbont Automotive Instruents - he is the Smiths agent in the UK.
[email protected]" target="_blank
Great, I will do that. Many thanks.
Sept 1970 Plus 2S, KOO38J Glacier Blue, 50/2432 (was Carnival Red)
- Andy Hamblin
- Second Gear
- Posts: 96
- Joined: 17 Feb 2020
Andy Hamblin wrote:john.p.clegg wrote:Andy
You need a new sender , do you have the old one ?
It may be repairable...
John
That's the problem John, I think the old one is the wrong spec (0-100psi range).
But, on the offchance it is the correct one just malfunctioning, who can rebuild them and does it make economic sense to do so?
You should be able to tell by the part number stamping , /06 is 60 psi , /10 is 100psi.
John
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john.p.clegg - Coveted Fifth Gear
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SJSportscars list what should be the correct oil sender unit:-
https://www.sjsportscars.com/parts-and- ... 6E0003.htm
Alan.
https://www.sjsportscars.com/parts-and- ... 6E0003.htm
Alan.
Alan
'71 +2 S130/ 5speed Type9.
'71 +2 S130/ 5speed Type9.
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alanr wrote:SJSportscars list what should be the correct oil sender unit:-
https://www.sjsportscars.com/parts-and- ... 6E0003.htm
Alan.
Thanks Alan, I'll check that out on Monday when they are open. I suspect it might be a 0-100psi one, looking at the very broad fitment list, but will find out and report back.
Sept 1970 Plus 2S, KOO38J Glacier Blue, 50/2432 (was Carnival Red)
- Andy Hamblin
- Second Gear
- Posts: 96
- Joined: 17 Feb 2020
alanr wrote:SJSportscars list what should be the correct oil sender unit:-
https://www.sjsportscars.com/parts-and- ... 6E0003.htm
Alan.
Right, so I phoned SJ Sportscars and asked them if the sender they have is 0-60psi or 0-100psi. The gentleman said he didn't know but it was the right one for a Plus 2 (although we hadn't discussed spec/year etc).
I explained that the gauge was 0-60psi but that senders for that seemed difficult to get in the right fitting, so i wanted to be sure the one they are listing was correct for my car and wasn't a 0-100psi one .He said he didn't know. I asked how we could find out. He said we can't find out, so if that is important to me I should look elsewhere.
I think I will, and for everything else I might need as well..
Sept 1970 Plus 2S, KOO38J Glacier Blue, 50/2432 (was Carnival Red)
- Andy Hamblin
- Second Gear
- Posts: 96
- Joined: 17 Feb 2020
If " it's the right one for a Plus2 " , buy it,fit it and return for full refund if not correct..
If correct , post here?
jOHN
If correct , post here?
jOHN
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john.p.clegg - Coveted Fifth Gear
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