Head shaving

[SEdgell]

I'm planning on doing a budget stroker setup and I'm thinking of having the head shaved before I do the swap. Has anyone had any experience with this? Anyone know ballpark what the compression ratio would be? Any problems with the timing belt tensioner making up for the difference in height?

[Mitch M]

~0.020" off an 885 head gets u ~38.5 cc...right about 9.0:1 on US ETA bottom end.

[///e30freak]

how much more can u shave before valve problems? (N/A application)

[Mastrcruse]

Youre motor man will be able to tell you. Also they numbers I believe are in the bentleys. Mine was WAY outta wack and I had to get a new head. The motor man should have a booklet that tells him.

[Mitch M]

how much more can u shave before valve problems? (N/A application)

I would stop there unless u notch the pistons. W/ stock "i" "K" cam u are @ 0.055" I & 0.070" exhaust piston to valve clearance @ 0.010 VL cold. Any more overlap be careful. Most engine builders recommend around 0.080- 0.100" min. Don't screw up the timing belt. One tooth off is trouble.

[///e30freak]

Heh, Thats scary.
Lash and my m20 are like a Spanish language soap opera. one day, my rockers and valves are making babies, the next, my rockers are in the swiss alps with my valve stems ex husband, making babies.

[a_thomasmr23]

I had my head deck .007 to clean it up and the timing was about .5 degs off

[Mitch M]

I had my head deck .007 to clean it up and the timing was about .5 degs off

I got ~ 1.5 deg. retarded @ ~ 0.020...good thing since u are going f/ 2.5 to 2.7 liters.

[Mike]

So, the obvious course of action is to get an adjustable cam gear?

[a_thomasmr23]

i didn't but your going to start pushing the power band around

[Mitch M]

1.5 deg. retarded moves the powerband up which is what u want when going f/ 2.5 to 2.7 liters w/ the same cam. MM sells just the pin if u are worried.