Thanks!

I weighed mine of the E-Street 75cc and intake valve was 4.2 oz or 120 grams and the exhaust valve came in at 4 oz or 110 grams.

So, it appears the all the cheapness (if you will) is in the valve springs, keepers and retainers. The spring came in at 144 lbs at 1.88 and at .500 were 250 lbs. So don't go crazy with a cam or rev too hard. I am going to replace the springs and other stuff anyhow.

Dan...