Mylar camshaft seal

[BennSport]

Hey everyone, I’m replacing all the gaskets on my camshaft tower but my kit never provided a replacement Mylar seal that goes between the tower and the cam gear cover. I was wondering if I could get away with reusing the same one or if it’s critical enough that I have to replace it. Thanks!

[barnwerks]

There is one mylar seal. It installs on the cam snout before the radial seal race is installed. The pulley housing to cam housing is sealed by an o ring and a small cylindrical plug face seal.

[BennSport]

Ah yes, my apologies. How bad would it be if I didn’t end up replacing that Mylar seal?

[Tom]

Ah yes, my apologies. How bad would it be if I didn’t end up replacing that Mylar seal?

I friend of mine tried to reuse a mylar seal and, well...





Kidding of course. I think most people just replace them so there probably isn't a lot of data on reusing them. If it looks ok, my wild guess it that it would be ok more often than not...

[michaelmount123]

If the seal is in good shape visually, it will very likely be fine to reuse. Before you do, go through your gasket set again. The seal is usually in a small translucent envelope which may appear empty. It will be in the upper (cylinder head) gasket set.

[BennSport]

Haha, it actually was there! It’s so translucent you can barely see it in the bag. Thanks for telling me to double check, I would’ve accidentally thrown it away