My "781" heads are at the machine shop now getting larger valves and seats as well as new guides. I have read a few posts on compression and fuel octane and have seen statements about modifying the "quench" area for better performance. Is trhis something I should be talking to my machinist about at this point ?
:confused:

Are you having 2.19/1.88 valves installed? Why do you need new seats?

Originally posted by mr 4 speed:
Are you having 2.19/1.88 valves installed? Why do you need new seats? Yes , that is correct and they called and said that water had apparently done some damage to one chamber. The new seats are for that cylinder only as I understand it. Sorry for the confusion.