Via Butler:
Quote:
We like the BOP two piece seal. Just need to make sure to follow the install instructions to make sure it’s installed properly. That’s the issue we’ve seen is people not following the instructions and having a leak.
Where the two seals come together you can add a little sealant to help with sealing. Also rotating them just little off from the parting line helps. Basically pushing one end just below the surface of the block while the other will be out of the block. The piece in the main cap rotated to match the block piece helps with sealing.
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Interesting that they say to rotate the parting lines. I was reading a Buick site where they were using the seal and said the same. BOP instructions say you can do that, but they haven't found it necessary.
The BOP instructions say to "apply a thin film of silicone or anerobic sealer between the cap & block and anti-rotation holes only."
__________________
Ken
'68 GTO - 464 - Ram Air II heads - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac (
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walk around)
'74 Ventura 350
'69 AMC Javelin SST