MustangWorks.com : Ford Forums - View Single Post - AFR 185's w/E-303: Piston to valve clearance problems?

Technick · 03-28-2003, 11:09 PM

As long as the duration measured at .050 lift is LESS than 230 degrees then lift DOES NOT MATTER!!!!!!!!!!!!!!!!!!!! It is WHEN the valves are open, not how much they open that is the issue! You do not have to worry about flycutting the pistons as long as you follow that simple rule. The E-303 cam has a duration of 220 degrees at .050 lift. So that cam is not a problem even with 1.7 rockers. I don't care what heads are on the engine that cam is not a problem.

03-28-2003, 11:09 PM	#4
Technick Registered Member Join Date: Feb 2003 Location: Seattle, Wa. Posts: 175	As long as the duration measured at .050 lift is LESS than 230 degrees then lift DOES NOT MATTER!!!!!!!!!!!!!!!!!!!! It is WHEN the valves are open, not how much they open that is the issue! You do not have to worry about flycutting the pistons as long as you follow that simple rule. The E-303 cam has a duration of 220 degrees at .050 lift. So that cam is not a problem even with 1.7 rockers. I don't care what heads are on the engine that cam is not a problem. __________________ No matter how much you spend, or how much you prepare, there is ALWAYS someone else faster or quicker than YOU!!!!!!!!!!