Thread: Anyone have a good way of blocking the exhaust crossover ports on FE390 Heads

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Originally Posted by DennyW

Go back to sleep now roger...

Denny, what I'm saying is that those ports can't have anything to do with smoking from oil. The problem has to be a gasket, or machining that has the gaps messed up. Focusing on blocking the crossover ports is missing the point, IMO.

Originally Posted by DennyW

Ok, but what I was saying in my other post, you need to check that. You can do that by using plasti-gauge, or thick soft paper, and torquing the intake in place. No gaskets. Then, using a simple mic, you can measure any spots that does, or doesn't make a sealing impression. If you hold the thick paper sideways, you can see it also. I understand what you guys are saying, but it's very simple to see where the problem is. You can even check the angles, with a simple angle gauge. That is all I'm trying to say. Plus, he was asking how to seal those ports off.

If you really read everything that stotzbotz wrote, he's asking how to seal the crossover ports because he believes that they are the source of his oil leaking into the cylinders. Guys have been sealing crossover ports for ages, but not to cure sucking oil.