In the picture below:
Does anyone know what the two screw in plugs labeled 'A' are or were used for ?
Also is the plug marked 'B' above the pressure relief valve able to be used for oil pressure monitoring after the relief valve ?
(http://www.1948plymouth.info/galley/var/resizes/chetbrz/Motor090.jpg)
Those three are the way they bored the oil channels . On end you will see a plug for the cross channel that ties them together . All can be used to monitor oil pressure ,temperature add or remove oil ie. filter (partial type ) feed .
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Great info, thanks Tom !!
My oil pressure gauge line is connected to the A Plug nearest the firewall.
Yes mine to . Also notice how regulator works by bleeding off extra pressure on whole system . Not having all oil run though it .
My original oil pressure line attached to the output of the exterior oil pump. None of the motor plugs were being used.
Since my daughter and grandkids headed back to Florida on Monday I was able to get back to work on the engine. I have install the minimum just to get the engine running. The old distributor housing, carb, wires/plugs, and circled in red in the picture below is a temporary oil pressure gauge (on left) and a distributor coil with cutout switch powered by the battery no generator. I finished the exhaust system today and will get the radiator back in before attempting to fire the engine up.
PS.., I have a new distributor housing on order from "Then & Now" auto parts. Once everything is working again I will introduce new items like carb and distributor housing but will most likely keep my old solid copper spark plug wires.
(http://www.1948plymouth.info/galley/var/resizes/chetbrz/Motor092.jpg)
I hand cranked oil through the engine by force feeding the input side. So she should pump oil up no problem. I also installed the line for the vacuum fuel pump since plugging this line delivers higher than needed oil pleasure.
I know we have discussed this on numerous occasions but what would the consensus be for max oil pressure. To high washes out the Babbitt material quicker than necessary. Almost hard to believe that to much oil pressure can be a bad thing.
Getting close to a restart.
My book for its 196ci U engine said to set relief for 45 max . And at normal running of 30 MPH should be 30-40 PSI .
Note corrected max to 45 psi for relief to open . I must check my gage calibration and adjust down as saw tonight it is up to 55 on start-up but does operate in range said . Engine had been rebuild by PO . May have been tampered with , never thought much about it being problem on bearings .
Info . from salesman's cat.
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Hi Tom
Thanks for the info. Prior to the rebuild my oil pressure was sitting at 35 psi at normal run speed. Never hit 40 max was around 36 or 37. Idle at approximately 20 psi. Maybe a little less. We will see what the pressure will be when I get it running again.
My pressure is right at 30. I expect it to drop a little on long hauls.
Dave's car has the oil gauge and Kingston from the oil pump with very small lines. He has mentioned this before. I had remnants of these lines. Have never located tubing this small in the length requird.
What size was it ? Look like mine from plug hole is 1/4" on O.D..
Quote from: frankp on July 22, 2018, 02:19:08 PM
My pressure is right at 30. I expect it to drop a little on long hauls.
Dave's car has the oil gauge and Kingston from the oil pump with very small lines. He has mentioned this before. I had remnants of these lines. Have never located tubing this small in the length requird.
Frank,
I think 1/4" soft copper tubing may work between the Kingston and the oil pump. 1/4" soft copper has an id = 0.190" with wall size = 0.030" Total = 0.190 + 0.060 = 0.250 or 1/4"
On my car the oil pressure gauge is a steel line but I don't think you can get this in soft steel anymore.
Tom I think you are correct with 1/4" O.D.
Thanks, Chet. I use 1/4 copper to Kingston. Car had 1/4 brass to oil gauge. frank