I just ordered a rebuild kit for my gsr and it came with viton valve seals. 8 of them have a silver spring at the top and 8 have a black one. does antone kmow witch ones are for the intake side and with ones are for the exhaust?

 

Seals with the black spring = Exhaust Seals.

 

its settled you are the master of the universe, thanks man

 

how do those viton valve seals hold up anyway ?

 

Viton is a registered trademark of Dupont and the name of the family of high temp (up to 400 degrees F) fuel resistent fluroelastomer used in high temp applications such as exhaust valve seals.