The Sr20/Sr22vet thread

[S13VE]

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.

[hanzbrady]

Originally Posted by S13VE

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.

The issue with the OEM SR CAS discs is the resolution, the only ECU's that read a resolution that high and perform well are the Motec boxes. Haltech and AEM can "work" with it now but I wouldn't call it performing.

You can fix that with a lower resolution or a hall effect setup which is easier to read.

Titanium retainers just don't wear, this is an internet myth. Unless there's something drastically wrong in the valve train your engines life span will not be shortened by a titanium retainer your right foot will do it first.

*edit I forgot to hit some points here,

The P11 and the P12 head flow nearly identical at all power level there isn't a real advantage. I've personally tested both. If anything i'd say the P11 is better due to the larger aftermarket and availability of cores. The only VE head that's flat out better is the 20V due to the MASSIVE intake ports.

Also the CBR coils are the go to with an external ignition module. I'm pretty sure that's what the Denso's that Mazworx sells actually are.

[insa]

Originally Posted by hanzbrady

You can fix that with a lower resolution or a hall effect setup which is easier to read.

Thanks for your input. You say that a fix would be a lower resolution. How does one lower the resolution with the Nissan OEM CAS? Is there a solution for that?
Thanks!

[hanzbrady]

Originally Posted by insa

Thanks for your input. You say that a fix would be a lower resolution. How does one lower the resolution with the Nissan OEM CAS? Is there a solution for that?
Thanks!

AEM sells a lower resolution CAS disc with their Series 2 ECUs. I'm not sure if the disc from the RWD CAS fits the P12 CAS though.

Ultimately I'll always recommend the hall effect setup.

[insa]

Originally Posted by hanzbrady

AEM sells a lower resolution CAS disc with their Series 2 ECUs. I'm not sure if the disc from the RWD CAS fits the P12 CAS though.

Ultimately I'll always recommend the hall effect setup.

That might be a solution, thanks again!