Is there a rule of thumb for this.
Mill lets say 0.015" = +1 dergee on both intake and exhaust.
Or does anyone have a chart that shows milling amount and cam gear adjustments they can post?

 

The rule of thumb is, and it's been covered a few times, is for every .040" thou (1mm) removed, you advance your cam gears 1 CAM degree (this translates to 2 crank degrees for ignition timing correction). So if you remove .030" from the head and then use a 2 layer headgasket, it equals .040" total. Same goes for decking etc, you just add up the total amount removed and go from there. If you only remove .020" total, it is corrected by 1/2 a cam degree. This will give you a good starting point to tune from when tuning cam gears on the dyno for best power.

 

That's exactly what I needed. I thought that was the case. Thanks, 00Red_SiR.

 

Quick question, if I dont know how much the head was milled, how do I know how much to adjust the cam gears?

I bought a head off of someone for my H22 and when I had put everything back together with the stock cam gear at TDC, the crank pointer was off about half a tooth, so now I have installed a pair of skunk2 cam gears and want to adjust them so everything lines back up.

 

degree wheel.

 

x2

Sometimes you can cc the combustion chambers which will give you an idea if the head has been milled much at all. That's assuming it's an unported head with no chamber work. This is good for ballpark.