Oil Pressure cluster gauge and sending unit
My 1967 GTO the cluster gauge for the oil pressure goes from 0 to 60 psi, but I thought the engine should have an 80 psi oil sending unit, which it does have from a recent restoration prior to my purchase. So:
1. Did GM just leave the gauge the same when they went to the 80 psi sending unit? 2.Or is the 60 psi sending unit correct? 3. Or is my cluster gauge wrong an it should go to 80 psi? Thanks for the help |
66 and early 67 had a 60 psi gauge, later production went to 80 psi. They have different sending units. Ames catalog 65-66 60psi M195D, 67-77 80psi M196D.
|
My car had has a build date of the third week in September 1966 (67 model year) so would that be early production? I am thinking that it probably is.
|
Quote:
|
My 67 is the 2nd week of August 66.
|
Quote:
As I said, mine is 60 max, but the needle is buried well beyond that to the right. Like they used the 1966 cluster but installed the 1967 80 psi oil pump and sending unit. |
My car had no instrument cluster so I bought an aftermarket dash bezel and gauges. 80 psi
|
Quote:
Disc sender wire, see what happens. |
Thanks for your inputs. Just to follow up on this: I had an external oil pressure gauge put on the engine to see what it read. 80 at cold start up and 60 on a warm/hot engine at 2,000 rpm. We concluded that yes this was an early build and was built with the correct 60 psi cluster gauge, sending unit and pump. However when the engine was rebuilt by a previous owner, they installed the 80 psi pump since it was a 1967 model year car. Mystery solved.
|
Quote:
|
Quote:
|
Always best to go with the weight of oil that your engine builder suggests. If he has set clearances for the 20w-50, then that is what you should run. The indicator is the pressures you observe on cold start and then on hot running. If those pressures are decent, then continue with the higher viscosity oil. Basically no right or wrong viscosity and depends solely on bearing clearances. Make sure your oil is fully up to temp before getting up into the higher RPM range.
|
Got it. Thanks again!
|
All times are GMT -4. The time now is 01:38 AM. |