Originally Posted by blue05
Thats kinda cool. I may be easier to just remove the heads if you already have the engine out. I used a setup like this on my chevy bb. I also stuffed a bunch of soft cotton rope into the cylinder thru the plug hole and then turned the engine over by hand until the piston compressed it enough to gently hold the valves up on another engine.
I use compressed air to hold the valves closed.
The reason I didn't want to remove the heads was I knew the headgaskets had seated properly, so why disturb them?
I don't really see how this could cause damage, as long as you don't overtorque the bolts you use to secure it, the cam cap threads are designed to hold down the cam against the force of the valve springs, under much tougher conditions (heat, vibration, etc).
Even with the head off, I found this tool much easier to handle than those giant C-clamp tools, putting the valve keepers back on was a snap.