TFS Valve Cover hole

[Black 93 Fox]

Does any one know what size hole I need to drill into the short valve covers. I need the hole for the oil fill.

 

[ponyboy19]

When I did mine, I bought the groments I wanted to use. I then mic'd them up and drilled the correct hole which was a few thousandths smaller for a snug fit.. actually for 10 bucks I let a local shop drill a hole in each cover. I used the rubber baffled groments that I could push a breather into.

 

[Black 93 Fox]

Any body else?

 

[Carbed86GT]

I installed one of these bolt on bungs on my fabbed alum valve covers. Looks trick and seals great. http://www.pro-werks.com/detail.php?name=BOLT-ON+BUNG+&+CAP+ASSEMBLY

 

[Black 93 Fox]

Thoes look awsome but i have to have a vent for the pcv.