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

S13VE · 05-01-2018, 05:21 PM

Yeah maybe I am going overkill then, as I was going e85 anyway which will help.

So maybe the recipe becomes:

P12 Head
P12 CAS as it comes with it anyway - unless we are all of the view that timing scatter is an issue with SRs over X revs or power? Selling the P12 cass covers most of the Hall effect cost anyway.
New supertech guides and seals.
Basic spring upgrade, supertech/BC + retainers (though I wish i could get something definitive on Titanium retainer wear).
New std size/maybe 1mm bigger Ex valves and off we go.

Or are the gains of the P12 really not worth it at this power level?

I can always swap out the cams later and P12 cams will sell more easily. Plus P12 head means I can use Yaris coils/any other COP setup.

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05-01-2018, 05:21 PM	#11
S13VE Join Date: Apr 2018 Location: Australia Posts: 43 Trader Rating: (0) Feedback Score: 0 reviews	Yeah maybe I am going overkill then, as I was going e85 anyway which will help. So maybe the recipe becomes: P12 Head P12 CAS as it comes with it anyway - unless we are all of the view that timing scatter is an issue with SRs over X revs or power? Selling the P12 cass covers most of the Hall effect cost anyway. New supertech guides and seals. Basic spring upgrade, supertech/BC + retainers (though I wish i could get something definitive on Titanium retainer wear). New std size/maybe 1mm bigger Ex valves and off we go. Or are the gains of the P12 really not worth it at this power level? I can always swap out the cams later and P12 cams will sell more easily. Plus P12 head means I can use Yaris coils/any other COP setup.