[TooJayZee]

Im building a jdm gte. The head looks good. Im wondering if I could/should drop in new valves, stems and seals without grinding the valve seats ?

 

[IGGYWOOWOO]

Nope! Valve job is a must! Why would you go through all of the trouble of pulling the head to replace valves and not have the sealing surfaces machined?

 

[supradupaflyguy]

can you? yes... would i advise it, no! the valves will go in the head, but i guarantee you they will not seal properly if you do not have the proper angles cut on both the valves and the valve seat to match each other.

 

[TooJayZee]

That confrims my thoughts.
I already have the motor torn down and the head looks ok. Im sure a good 3 or 5 angle would help it out. I dont know what cams im going to use yet. I also dont know how much money to drop into the head. I see all the people on stock heads that make good power. Im only lookin for 550rwhp