If any? Since milling the head causes a change in cam timing, I figured that this would also, but how much?

I may mill the head also. So I need to know the values of "X" and "Y", where milling the head .0X0, causes a Y° change in timing.

 

every 0.012" removed from the head or deck (or headgasket) retards the cams by 1 degree.

HTH

 

SWEET! Thanks man! I didn't think that anyone was going to reply to this. Would you happen to know the thickness of the head gasket layers? I don't have anything to measure that small of a thickness.

 

Your welcome.. Stock honda gasket is 0.029" crushed, and there are 3-layers.

You can calculate your compression here:
http://www.c-speedracing.com/howto/c.../compcalc.html

 

I have seen the light! You rock!

Maybe I can press my luck & ask one more question...
On a GSR, how much can you remove before you run into clearance issues? I have a CTR intake cam, but if you know the stock clearance, I can take it from there. My Helm's is at the shop & I keep forgetting to look & see if this is in there!

 

Hmm not sure, but you should be able to take 0.020".
Best way is to clay the motor. Here's the process:

http://www.c-speedracing.com/howto/claymotor/clay.html

 

Wow, that site's come a long way since I first visited it! It looks real good now.

Thanks for all the help. Now I gotta figure out how high I want to go with the compression, what pistons to get AND how much to mill! Every answer spawns a new question - DAMMIT!

 

good luck!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by G3-TEG &raquo;</TD></TR><TR><TD CLASS="quote">every 0.012" removed from the head or deck (or headgasket) retards the cams by 1 degree.

HTH</TD></TR></TABLE>

back from the dead, but is this rot accurate(if not, what is) and does it work in the opposite direction(.012" increase advance 1 degree)?

 

the outer layers of the stock head gasket are .009 and the middle layer is .005. so you looking at .023 +or-.001. this is using digital calipers. i would assemble it and see how far the cams are retarded. i would say start with +2 degrees if you run one layer!