The Sr20/Sr22vet thread - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

livelovesole · 08-21-2018, 09:41 PM

At what power level would you guys recommend upgrading to supertech oversized +1 in +2 exh valves on a p12 head? I just sent my p12 head to maxworx to get their stage 0 head work done and was thinking if i should slap on oversized valves. Im aiming for around 500-600hp at around 25-30psi of boost. Head is going to have supertech 93lb dual valve springs amd tomei cam gears, thats pretty much it as far as the head goes.

08-21-2018, 09:41 PM	#11
livelovesole Zilvia Member Join Date: Apr 2013 Location: Long Island, NY Age: 32 Posts: 216 Trader Rating: (5) Feedback Score: 5 reviews	At what power level would you guys recommend upgrading to supertech oversized +1 in +2 exh valves on a p12 head? I just sent my p12 head to maxworx to get their stage 0 head work done and was thinking if i should slap on oversized valves. Im aiming for around 500-600hp at around 25-30psi of boost. Head is going to have supertech 93lb dual valve springs amd tomei cam gears, thats pretty much it as far as the head goes.