need a little help...

thewrench3 · 05-15-2008, 03:11 PM

I freshened up my stocker engine last week and made three runs on it since it was freshened up. I keep loosing valve lash on the intake valves only. It's loosing .020" each pass. Its like the valves are sucking up into the head. What causes this? Everything was the same except for the new valves(intakes) and a thinner head gasket.I checked the valve to piston clearance when i put it together and it was over .100"
The engine now has 240 psi of cranking compression but it runs slower. Any suggestions?

05-15-2008, 03:11 PM	#1
thewrench3 Junior Member Join Date: Nov 2007 Posts: 14 Likes: 0 Liked 0 Times in 0 Posts	need a little help... I freshened up my stocker engine last week and made three runs on it since it was freshened up. I keep loosing valve lash on the intake valves only. It's loosing .020" each pass. Its like the valves are sucking up into the head. What causes this? Everything was the same except for the new valves(intakes) and a thinner head gasket.I checked the valve to piston clearance when i put it together and it was over .100" The engine now has 240 psi of cranking compression but it runs slower. Any suggestions?