Just wondering if there are any head experts out there.
I gotta get some new valves for my rb26dett head. Has cams , porting etc etc but the head machinist has said the stock valves are 1/2 a thou worn and that i should replace them. I priced them from nissan. Over $1000.00 for 24. Might as well put some ferrea or manley valves or something like that. My question is the stock exhaust valves are sodium filled , by going to a stainless valve (manley, ferrea) would that be a problem. Also what size seems to work as i was going to go 1 mm oversize as im replacing the valves anyway.
Cheers.