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Joined: Jul 2013
Posts: 97 Likes: 1
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jul 2013
Posts: 97 Likes: 1 |
I have a 1939 Master Deluxe, which has an oil distributor on the drivers side of the engine, right behind the exhaust flange. I have the palm sized unit that bolts to the engine and not the flat plate with the valve pieces that fit into the engine. There is not much written about this device. From what I can see it regulates? oil to the valve train on top of the engine. How can I tell whether or not this unit is working properly? Mike
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Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
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ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
The oil distributor allows the full oil pressure to the main bearings and the low pressure goes to the rocker arms and connecting rod oil pipes.
1939 had an exclusive feature in that the oil went to the rocker arms under full presure but was metered through a small hole to control the flow.
It (1939)also has a small pipe plug on the cap for connecting to an oil filter.
If it isn't working the rods will not get oil and burn out in a short time. As long as there is normal oil pressure on the gauge everything is OK.
A '39 has only a couple of pounds prssure at hot idle and 13 pounds at 50 MPH.
The pressure was increased in 1940 with a larger oil pump -and it will not fit a 1939 engine.
Mike,
Are you going to be at the Holz car show on july 4th?
If so let me know.
Last edited by Chev Nut; 06/01/15 09:08 PM.
Gene Schneider
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Joined: Jul 2013
Posts: 97 Likes: 1
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jul 2013
Posts: 97 Likes: 1 |
I had some trouble with low oil pressure a few years ago and replaced the oil pump. It was an aluminum unit and After I had it installed I didn't like it. So, I removed it and had the original pump repaired. At speed 25-30 MPH I have about 15# and hot idle the pressure goes low. I have not measured the pressure with a good gauge, but since everything works I'm not concerned. My rocker arm shaft is made in two pieces a front and a back. They are tied together with a spring loaded adapter which has the oil connection to it. There seems to be an overflow pipe coming off this. When the engine is running oil is flowing out of the this and back down the inside of the block back to the sump. Apparently the oil just lays in the rocker shafts and lubes the arms though holes in the shafts. The valves get lube from this leakage.
Gene, I had not intended to go to Holz Motors on the 4th, but could show up during the morning. I have a parade in Shorewood in the afternoon. Do you want to meet somewhere? Mike
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