Oil filter canister seeping

Jake H.

Jake H.

Member
I just recently got the 59AB running that was installed years ago in my '39 Tudor.

While running, it was constantly seeping oil out from under the top of the stock oil filter canister mounted on the driver's side head.

I pulled the ancient (1982 vintage) oil filter out completely, checked for any weird stuff in the canister, and ran it again. Same seepage. Tightened the cap after checking for the 0-ring, same thing.

I pulled the canister and lines, and checked the fittings as well for blockage. All are clear.

Finally, I looked closely at how it was plumbed with hard lines. It has the pressure line from the pump fitting at the back of the block going to the side of the filter housing, and the return line to the oil pan comes off the bottom fitting of the canister.

Is this plumbed backwards?
 
I can't tell you anything about the plumbing. Last week I had my oil filter lid off and when I put it back on it was leaking. I checked and there is a rubber gasket in the lid. I just tightened it a little more and the leak stoped. Mine is a 1940.
 
Pressure in from the side, out through the bottom... Check to see that there is a fitting or other orifice that should be around .060, to limmit the amount of oil going in to the filter... Karl
 
The lines are right,the problem is probably in the gasket,I seem to remember that new filters came with two gaskets. John
 
My 59AB filter did the ame thing...I changed filters and was able to use a new gasket seal. I really tightned it down quite hard and no leaks of any kind now. I do think once a seal has been used and you try to reuse it the seal will not happen.
V
 
Thanks for the help. I'll try a new filter with the supplied lid gaskets when I put in some fresh oil.

What threw me is I checked my buddie's beehive filter arrangement on his '28 rpu, and it was plumbed with the pressure line coming in from the bottom of the housing, and out the side.
 
The flow through the filter would be the same even hooked up backwards. The pressure in the filter would be slightly higher without the input restrictor. Besides the .060 restriction on the input the oil returns through the pipe up through the middle of the filter that the nut screws into. The return pipe also has 1 or 2 restiction holes about 2"s from the top that would slow the return oil some even if the input restriction was left out. With the output restriction a little larger I would say there isn't much pressure in the filter when it has a smaller restriction on the input. Inspect the lid gasket to make sure it seats and wipe a thin film of oil on the gasket there is also a washer on the cap nut. G.M.
 
When replacing the filter and rubber gasket in the lid, I run a bead of oil on the rubber gasket, place the lid on the canister and tighten the screw but just before the screw gets too tight; I twist the top around to seat the gasket, and continue to tighten the screw. This works every time and I have no leakage from the canister.
 
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