MustangWorks.com : Ford Forums - View Single Post - Piston to valve clearance

Rick 91GT · 03-29-2001, 01:24 PM

I agree with Jeff in take your measure ments on the outside of the eyebrow. Now I do have 2.02 valves but I had .139" clearance and after I got the motor apart I saw a slight mark where the valves had kissed the piston on the very, very edge of the eyebrow. Now since I fly cut them it is not a issue. I was always told .100 on the intake and exahaust as a min.

You can take some epoxy and fill a roller lifter or weld one shut to make a solid lifter.

------------------
Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!

03-29-2001, 01:24 PM	#1
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	I agree with Jeff in take your measure ments on the outside of the eyebrow. Now I do have 2.02 valves but I had .139" clearance and after I got the motor apart I saw a slight mark where the valves had kissed the piston on the very, very edge of the eyebrow. Now since I fly cut them it is not a issue. I was always told .100 on the intake and exahaust as a min. You can take some epoxy and fill a roller lifter or weld one shut to make a solid lifter. ------------------ Check Out My Site 91GT,Holley SysteMAX II Kit-Heads 2.02" x 1.60" port matched to a 1262,Anderson N-61,24#,76mm C&L,Full MAC exhaust 1-5/8" Long tubes,2-1/2" O.R H-Pipe,2 1/2" cat back, No A/C or PS or emissions, 12" K&N Filter,RNH PERFORMANCE Ram Air,Ron Davis Radiator,Full Suspension,S&W 8pt "X" brace,JAZ seats,3:73's,Welds..etc,4:30's and 31 splines coming very soon!