Mike Cordero

iTrader: (122)

I'm planning to go Procharged and I have two set of heads; one a 243 with sodium filled valves and the other is a 317 with regular valves. I'm planning to run just 8 pounds of boost. My question is: Which head I should use and if the answer is the 317, being that I have the two valves sets option, should I use my sodium filled valves instead of the regular valves or leave the regular ones? SOME LIGHT ON THIS PLEASE. Thanks.

Mike Cordero

iTrader: (122)

Do the sodium filled valves are as strong as the regular 317 ones; I'm thinking about the pressure that will hold with the Procharge.

SD99TA214

iTrader: (27)

i really wouldnt sweat that, as much as it sounds important, its actually not. on the seat the valve has 180+ lbs of pressure on it, and the wieght becomes really unimprtant until you get up into th 5, 6 ,7 hundred horse power range, 8 pounds of air pressure against 180 pounds doesnt really effect anything. hope this helps

SD99TA214

iTrader: (27)

on another note, you will hardly see a differance in power change regardless of the head you chose.all 3 of those heads will be close to equal on a forced induction car, because head flow becomes not so much of a factor in performance. the only thing that will change the performance out come is your compression and honestly i dont know the chamber cc's of the 3 heads so i cant put my 2 cents in there, but id choose the head that will create the least compression and run them. again hope this helps.

Mike Cordero

iTrader: (122)

Thanks, I'm just curious because I have the option of keep the best of the two types. That's why I'm asking?

SD99TA214

iTrader: (27)

either set will do the trick niether will be better in your case.