I wasn't sure where to post this... Anywayz, I am doing a 3 Angle Valve job in my class at school. I am doing it on a buddy of mines GSR head. My question is, is there any books out there or websites that I can print the specs off of for this? I need to know how big of a contact patch I need. And or any other specs I need. Any help? It would be really nice if there was a book I could buy because having it there with me would help alot.
Thanks for your help.

 

The valve / seat contact patch varies on the amount how much you want it.
Larger = better cooling, more prone to wear
Smaller = less cooling, doesnt wear as much

Angles are 15, 46, 70. 46 being the valve contact patch angle (seat and valve angles have 1deg difference)

As for a book, SpeedPro, head and camshaft book is worth a check