Some "Dynomite" Heads! - ZR-1 Net Registry Forums

Polo-1 · 03-30-2011

my chamber and valves stock.

round out the "flats" at the four valves edge ( for a 4" bore) and pick up 13 cfm.

I just think you might be doing more work for VERY small gain on the "left/right" clover.

I know I told what to do to pick up 7-10 HP on the exhaust side. I did not see it done in the pictures.... 1/8 wide flat spot.

Todd's stuff is out there (and it worked for him). Keep your build to tried and true. Much easier and cheaper, and you wont need a heavy mill or special pistons to get back compression.

03-30-2011	#18
Polo-1 Join Date: Sep 2005 Location: Washington Posts: 955	Re: Some "Dynomite" Heads! my chamber and valves stock. round out the "flats" at the four valves edge ( for a 4" bore) and pick up 13 cfm. I just think you might be doing more work for VERY small gain on the "left/right" clover. I know I told what to do to pick up 7-10 HP on the exhaust side. I did not see it done in the pictures.... 1/8 wide flat spot. Todd's stuff is out there (and it worked for him). Keep your build to tried and true. Much easier and cheaper, and you wont need a heavy mill or special pistons to get back compression.