Rope rear main seal in early engine

[Shoebox]

So at some point I am going to go through the original engine in my 39 Merc. Although it will remain stock in outer appearance I intend to use my 4" crank and 8ba rotating components. Regarding the rear main seal am I correct that the die cast parts in the slinger area are simply replaced by the die cast parts from later engines that can hold the rope seals?

[Ken/Alabama]

You'll need the lower 19B-6336 holder for the lower rope.

[Shoebox]

Thanks for the response Ken, but is there not a corresponding upper holder that fits in the block, or is there just a groove that the rope goes in. Obviously have never had a pre '49 engine apart.

[Ken/Alabama]

Originally Posted by Shoebox

Thanks for the response Ken, but is there not a corresponding upper holder that fits in the block, or is there just a groove that the rope goes in. Obviously have never had a pre '49 engine apart.

Yes it's 91A-6335. If you're engine is a 39 Merc it may have a rope seal . If you need to purchase them , Vanpelt would be a likely source.

[Shoebox]

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Ken,
Thanks again for your info, and your part numbers are spot on. I would be surprised if my '39 Merc already had a rope rear main seal, but we'll see when we open things up!