It's mild in lift but not duration.

I had stock cams reground. I am running solid lifters and we measured how mich room we had to work with for base circle redux. I think we pulled 2mm or so off the base.

 

Stock is 236 and 250 duration. .050 is 190 and 204. And my mistake lift is actually 8.4 and 8.5 on my cams. Stock is 7.8ish. And also, I'm going to be rotrexd so you don't want too much duration.

 

All in all in happy. At 5000rpm redline break in tune with no ignition tuning only fuel it made 105whp/101wtq ish on a 8.7:1 comp motor. The can only starts coming on at 4k. With a bit of cam tuning I think it will be a really good mid-range torque cam.

 

I just got off the phone with megacycle about the integral cams:

http://www.integralcams.com/miata.htm

For regrinds the costs is $796. Owchers.

I think I will try some local shops and see what they charge to grind to a spec.

 

Valvetronic.

A proper manifold and DP will definitely help out with earlier spool.

 

$800 to grind two camshafts or one?

 

Yup the plan is to do a short runner tubular manifold. Maybe standard absurdsflowish style.

And yes, I'm gonna go from my 3" downpipe to a 3.5" or 4" or whatever will fit underneath.

 

Two.

 

Fae, I am really excited to see your car finished. Too bad Kelford doesn't make cams for BP engine--but a intake manifold will definitely help with flow across the RPM range. $800 is so expensive!!! Talk to Crower, the ground the cams that gotpsi bought from me.

 

Thanks I will give Crower a call tomorrow. So far my supergutted intake mani seems to be doing the trick and held power to 8000rpm.

I too am looking forward to your "stage 6" rebuild. We chose very different turbos but have similar goals so the comparing results will be very interesting. I think that with E85 you will have good results with your 30+psi target. It's about time we see some serious high boost on a miata and the EFR is the right turbo for it. Given the rarity of 500+hp miatas (I have seen no more than five on the web), it's pretty cool that there are two builds in progress right now right here.