Front crank seal

gbvona

gbvona

Member
I have transplanted a 36D 3.9L LR engine into my 1970 NADA 3500S. The original engine had gone walkabout and had been replaced with an Oldsmobile mill, which emphatically did not fit.

I've had the car out on the road and the new engine runs reasonably well, though I have some tuning issues to sort through. This enquiry is about the front crank seal. The transplant involved fitting a 3500 front cover assembly into the 36D engine because the front cover of the latter would not fit in the P6. The 3500 front cover was fitted with a rope seal, which I replaced during the rebuild. However even with a new seal I am getting not inconsequential leakage out of the front. Upon reading previous posts I believe that this is because I do not have an oil thrower on the crank--it did not come with the 36D engine, because the 36D cover had a lip-type seal.

I am resigned to removal of the front cover etc. What is my best option? I doubt that I can find an oil thrower here in Yankeeland, so I would guess installation of a lip seal is in the cards?

Thanks for suggestions.

gbvona
 
gbvona said:
I doubt that I can find an oil thrower here in Yankeeland, so I would guess installation of a lip seal is in the cards?
Click to expand...

I think I may have an oil thrower. I've sold a couple but there may be another one which I'd be prepared to sell and ship, or you could go the lipseal route by removing the rope seal track in the cover, but with both options, the timing cover is going to have to be removed to do it.
 
I understand the buick 90 degree V6 also uses the same cover as the 215 and given the rope seal was a US favourite I suspect the oil thrower is probably also common. Personally I'd go the lip seal though. I had my cover machined to fit one but the SD1 engine had lip seals as does the P76 V8. The buick 1982 3.0 litre V6 front cover part no. is 25512585, can't find a flinger number sorry. note that cover has some significant differences to the Rover cover - the oil filter is at a different angle, there is no fuel pump provision and the matching water pump is much shorter
 
V8 tuner sells a kit which converts the rope seal to a lip seal in a p5/p6 front cover. There is no machining needed and the kit comes with a clear instruction. I used it for my P5B and it is an easy conversion and it is now leak free.

Peter
 
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