belvyfever
Active Member
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1962 Plymouth 318 oil leak
- Thread starter belvyfever
- Start date
Red63440
Well-Known Member
Make sure the old rubber gasket came off with the old filter if not then you may have two gaskets on the filter. Always put a thin coat of oil on the seal when installing a new oil filter. Also make sure you have the right filter, it doesn’t look right.
belvyfever
Active Member
Is this typical for 1962 poly 318? Never saw this before. Never had to change a gasket under “the plate”. So I take it I should drop oil snd unscrew filter….then what? How does this plate come off?
belvyfever
Active Member
I just changed the oil. I bought this filter as per what I use on my 1964 plymouth 318 and 1969 dodge 318. The old seal definitely came off with oil filter. I made sure. Always check for that because I heard it happens…but never even once has that happened to me. Also, I always wipe/clean gasket mating surface with clean cloth before I screw on new filter and yes, with a bit of oil dabbed on all the way circumference of new gasket. Notice in lower photo how you can see oil flowing out of what looks like the upper of two gaps…in the bare metal surface area just larger than outer diameter of oil filter that’s showing. In upper photo notice there’s no oil flowing out of that same gap. Id like to believe first reply…although I’m not familiar with that type of leak. Please anyone, explain perhaps first few iterations of poly’s spin on oil filters. I know my 57-58 318 polys had oil canisters under there. Thanks all..
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Red63440
Well-Known Member
Being that the filters are fairly cheap I would remove the filter that is on the engine now and compare it either to the old filter or drain it and take it to a parts store to make sure you didn’t get a bad one. The filter should not be that far out from the mating surface, could it be cross threaded?
Big Bad Dad
Well-Known Member
Fram PH8A is correct for old Mopars of the 1960s. I agree that the gasket behind the plate needs replacing.
VFilms
Well-Known Member
@R413 is correct. I had the same problem with my Poly. Remove the filter and there is a 1” nut that holds on the cap/plate to the block. Remove the plate, there is a paper thin gasket between the block and plate. Replace it. You can find them
on the web. The new ones are thicker. Torque the nut back to about 35 ft pounds (I believe ). MAKE SURE ALL SURFACES ARE CLEAN AND FREE OF DEBRIS. I had a little crust on the block and the new seal/gasket would not seat causing it to leak.
If you want to PM me I can look up all the info and get it to you.
UPDATE: The OEM style are very thin and the Fel Pro fibre gasket replacement #70522 is "thick" and durable and will not crush or leak. The gasket can be found at any auto parts store.
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Filter stud gets tightened to 50 Ft/lbs on the small block.
VFilms
Well-Known Member
Thanks for the correction. I didn't remember exactly and my FSM wasn't handy. Good catch!
Slap Stick
Well-Known Member
And then get rid of that POS Fram!
belvyfever
Active Member
Felpro 70522…got it. Thanks so much guys. I’m happy this leak is easily fixable. Can anyone tell me which 318’s this oil filter plate gasket applies to? My 57 and 58’s had canisters. Does my 64 Poly have the same? I’ve owned several LA 318’s..I know I never saw this type of leak with them. Thanks.
I took my manuals home, so I searched for it in 5 manuals until I found it in the '73. I knew it was 50, but just wanted to have confirmation. Another error is using the incorrect plate gasket. The outer circle ONLY is used with the steel plate, and the gasket with a center section is only used with the cast iron 90 degree adapter. If you use the latter gasket with the steel plate, it WILL leak as the outer circumference section will not compress the gasket.
VFilms
Well-Known Member
Fits Chrysler/Dodge/Plymouth 273-360 Engines and POLYs with spin on filter.
VFilms
Well-Known Member
Another issue I have found is some of these gasket kits come with a small gasket, about the size of the nut. THROW IT OUT. I have no idea why some companies include it.
Just be aware, there are two different sizes of outer rings in full gasket sets. I don't think I have found out which one uses the larger ring either. The thicker cork center is used for the 90 degree adapter only.
VFilms
Well-Known Member
You are correct. Thanks. I was speaking only about the LA and later Polys. But nice that you cleared that up.
belvyfever
Active Member
I removed filter and then removed center stud/nut. Here’s what I found. Looks different than photo previously posted. Does a 70522 Felpro look correct for mine? I ordered one will pick up tomorrow am. Thanks
The one I posted is a 90 degree adapter, and yours is not. I was only showing what used the other gasket parts as a reference. The gasket you ordered should be just fine. Make sure it (the gasket) fits the recess properly before you try to tighten things down.
VFilms
Well-Known Member
The gasket goes between the block and the plate, I’m sure you know that. The threaded nut bolts it to the block.
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