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Head upgrade advice

Posted: Jul 29, 2018 5:08 PM
by 5timesturbo
I have a leak in my system so I've decided to take the headoof and do it "right" . I'm gonna use metal head gasket and rap head bolts and I want to know some other upgrades I can make to my turbo m30's head that will give me some gains. I've looked into cam shafts and from what I read it seems I'm best not bothering the cam..... Any advise or pointers will be appreciated....as long as it gives me gains and doesn't require me going into the block right now. I'm running 10 -12lbs and stick management.

Re: Head upgrade advice

Posted: Jul 30, 2018 1:39 AM
by Shadow
Get a cam and springs maybe bigger valves.

Re: Head upgrade advice

Posted: Jul 30, 2018 8:57 AM
by tschultz
Since I needed a new cam anyway, I decided to do the B35 cam for a bit different power curve. According to TCD it really doesn't change the acceleration.

I wanted to do bigger exhaust valves, but my head guy wasn't comfortable with the oversize valves in the B34 head. Instead, we just did a 3 angle valve grind and valve guide replacement. I did ARP head studs with stock Elring gasket.

Otherwise, you could spend $$ and get a catcams turbo cam...

How much do you want to spend?

Re: Head upgrade advice

Posted: Jul 30, 2018 11:01 AM
by T_C_D
b34 cam is best for mpg, drivability and acceleration up to about 400rwhp. A simple upgrade is the b35 double valve springs.

Re: Head upgrade advice

Posted: Aug 01, 2018 12:39 PM
by 5timesturbo
Thanks for the pointers.