Inliners International Forums General Discussion Engines How to better seal a problem cylinder head...

If you increased the thread depth, what would it hit - water? It's been done using various sealers.
Adding 1/2" would be nice because you'd have more engagement for a stud, which is usually 7/16-14 NC bottom + 7/16-20 for the top, using a flanged net or a thick washer.