CLASS RACER FORUM - View Single Post - Valve Spring Pressure

Alan Roehrich · 06-25-2018, 10:34 PM

If you indeed have 250# on the seat, and over 500# open, you have over 0.050" piston to valve clearance on the intake, and you have a valve control problem, then there is something terribly wrong. I can spin mine to over 8,000 RPM with those pressures, and a true 0.050" piston to valve clearance.

06-25-2018, 10:34 PM	#4
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,118 Likes: 1,577 Liked 1,837 Times in 417 Posts	Re: Valve Spring Pressure - BBC stocker If you indeed have 250# on the seat, and over 500# open, you have over 0.050" piston to valve clearance on the intake, and you have a valve control problem, then there is something terribly wrong. I can spin mine to over 8,000 RPM with those pressures, and a true 0.050" piston to valve clearance. __________________ Alan Roehrich 212A G/S