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

S13VE · 04-29-2018, 09:17 PM

This thread has been very valuable, thanks to all who have contributed. I signed up just to get involved.

I'm currently building a motor for a circuit/time attack style car and tossing up between VE head options.

Absolute max power would be 400rwkw (going for PB's/Wins/laps with mates etc) but for longevity I will happily run it at 300-350, know it can do it very easily and not have to worry about head reliability at revs.

I'm having a hard time choosing a head, both are available to me and I can afford either but I do like to get good bang for buck from mods and am not the type to go absolute best at all times for no good reason.

The P11 head comes out a bit cheaper even after coilpack conversion, CAS and solenoid swaps etc, but the things I'm having a hard time deciding are which cams are best suited to this goal and if the smaller valve stems are an issue in the p12 head as I hadn't planned on changing anything in either head beyond springs and a mild clean up port.

I will use a TS manifold and Ext gate whichi should help in response and top end flow respectively.

Thoughts?

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04-29-2018, 09:17 PM	#1
S13VE Join Date: Apr 2018 Location: Australia Posts: 43 Trader Rating: (0) Feedback Score: 0 reviews	This thread has been very valuable, thanks to all who have contributed. I signed up just to get involved. I'm currently building a motor for a circuit/time attack style car and tossing up between VE head options. Absolute max power would be 400rwkw (going for PB's/Wins/laps with mates etc) but for longevity I will happily run it at 300-350, know it can do it very easily and not have to worry about head reliability at revs. I'm having a hard time choosing a head, both are available to me and I can afford either but I do like to get good bang for buck from mods and am not the type to go absolute best at all times for no good reason. The P11 head comes out a bit cheaper even after coilpack conversion, CAS and solenoid swaps etc, but the things I'm having a hard time deciding are which cams are best suited to this goal and if the smaller valve stems are an issue in the p12 head as I hadn't planned on changing anything in either head beyond springs and a mild clean up port. I will use a TS manifold and Ext gate whichi should help in response and top end flow respectively. Thoughts?