piston to valve cl. check

Alan Roehrich · 03-19-2014, 11:20 AM

There sure is. I check mine with a race spring and a fixture that uses the rocker arm to open the valve with a 1/2" drive pull handle, using a dial indicator on the valve spring retainer. I check every 5 degrees of crankshaft rotation from
25 degrees BTDC to 25 degrees ABDC for intake opening and exhaust closing. You will find valve train deflection in a big block Chevy Stock Eliminator engine to be impressive, to say the least.

03-19-2014, 11:20 AM	#2
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,113 Likes: 1,571 Liked 1,826 Times in 414 Posts	Re: piston to valve cl. check There sure is. I check mine with a race spring and a fixture that uses the rocker arm to open the valve with a 1/2" drive pull handle, using a dial indicator on the valve spring retainer. I check every 5 degrees of crankshaft rotation from 25 degrees BTDC to 25 degrees ABDC for intake opening and exhaust closing. You will find valve train deflection in a big block Chevy Stock Eliminator engine to be impressive, to say the least. __________________ Alan Roehrich 212A G/S