Hey I'm running a gsr motor, and am upgrading the valvetrain to all supertech, and was going to get 1mm oversized valves. Anything I have to do to the head before I can put these in, such as port it? Or do they just go right in? What's the pros and cons of oversized valves on a boosted car???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 9hatchman4 &raquo;</TD></TR><TR><TD CLASS="quote">Hey I'm running a gsr motor, and am upgrading the valvetrain to all supertech, and was going to get 1mm oversized valves. Anything I have to do to the head before I can put these in, such as port it? Or do they just go right in? What's the pros and cons of oversized valves on a boosted car???</TD></TR></TABLE>

You'll have to get the valve seats bored to accept the larger valves I believe. And just so you know, most places charge like $100 per valve. Have fun with that...

 

i would get .5mm oversized valves and then the seat doesnt have to be worked out so much. just get a 3-angle valve job

 

or get stock size and dont mess with it


porting is expensive unless you got the hookup

 

What is the benefit of having larger valves though, just stronger, more durable???