Race Spec Rocker Cover

[Sefton-EP91]

What's peoples suggestions on the internal diameter of hose used? How wide does the internal diameter need to be? I dont want it to be too small therefore making it harder to breathe.

Thanks.

[Starbuck]

As big as the hole already there I'd say. An8 is sufficient, that what mine was.

[Sefton-EP91]

Ok thanks mate