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Hey! I control the piston to the valve distance on my 493 stroke with Mahle flat top piston and 8cc valve relife, Edelbrock e street heads and a xe275hl hydraulic comp. Camera. I use solid lifters for control and light control springs and adjustable pushrods to zero tilt and play doh on the piston, I am surprised when I lift off my head and it was just a small mark in the play doh, I have about 0.39 "clearance so that the valves The plunger is 0.039 "down the hole at TDC and this camera has 106 degrees center line just like the video card said. So there is not really a piston to release the valve on this 493 engine
Hey! I control the piston to the valve distance on my 493 stroke with Mahle flat top piston and 8cc valve relife, Edelbrock e street heads and a xe275hl hydraulic comp. Camera. I use solid lifters for control and light control springs and adjustable pushrods to zero tilt and play doh on the piston, I am surprised when I lift off my head and it was just a small mark in the play doh, I have about 0.39 "clearance so that the valves almost The plunger is 0.039 "down the hole at TDC and this camera has 106 degrees center line just like the video card said. So there is not really a piston to release the valve on this 493 engine
Did you rotate the motor, duration can have more to do with valve clearance that you think but you need to rotate the motor.
Hi im sorry about the language i have change it now. Yes i rotate the engine 4 revolution and i have degreed the cam to 106 degrees centerline like the camcard said. This is race pistons with pretty deep valve reliefs(8cc) and this is a pretty mild camshaft with only 0.525" lift so thatswhy i have so much clearance, it must be it
[QUOTE=Mopar493;148052]Hi im sorry about the language i have change it now. Yes i rotate the engine 4 revolution and i have degreed the cam to 106 degrees centerline like the camcard said. This is race pistons with pretty deep valve reliefs(8cc) and this is a pretty mild camshaft with only 0.525" lift so thatswhy i have so much clearance, it must be it, you can see on the picture the relifes are pretty deep and the picture with green clay on you can see its only 2 slite marks from the edge of the valves and you can also see the cam specs in one picture
Slice through your clay/putty at the center of the valve and remove some to expose a cross section and measure thickness. Intake .080", Exhaust .100" is acceptable. Valve radius is .050".
Pistons might be way down below the deck height also?
Looks like you have room for a much larger lift cam... I say roller cam it...
yes it looks like its plenty of room for a larger cam, the pistons is 0.043" down the hole and with this large valve relifes it be alot room with a pretty mild camshaft like this, i want the engine streetable for usuall driving and little play with burning tires from time to time so thats why i chouse this camshaft and for sure i not need to be worry about the piston to valve clearance😊
03-02-2019, 01:52 AM
I say roller cam it... 
