Quote:
Originally Posted by Big George
I used to have and use one of those. It basically consisted of an adapter that screwed in the spark plug hole, and connected to an air compressor. The compressed air kept the valves shut, and the other tool was like a special "crowbar" that compressed the valve springs. Pretty slick.
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Not quite, but I have seen that type. The air is std, and you can either use a adapted compression tester wand, hose etc which is std with a 2 piece gauge or better a leak down test wand, which is the same fitting as my air tools have... That much holds up the valves. The pistons need to be at TDC just because the cam needs to be off any valves, lifters push rods what have you.
On this engine i am guessing there is still push rods... These might be bent....
As to the tool i have it looked like a battery terminal puller. There is a bracket with 2 hooks and one hook arm is a little longer than the other. In the center is a screw and it has a cheap handle a lot like a tap holder, so the handle can slip from side to side in the event something is in the way, like a tap handle will.
Usually in use the valve keepers hang up and the bottom of the spring lifts up. A tap on the top of the tool screw with a light ball peen hammer will usually set the keepers free... make sure there is clean white rags all around so no keepers get lost.
Valve Keepers are semi circle wedges made of steel and these have mating ridges that when 2 keepers combined form a ring to grip the valve stem. Some keepers have 2 rings and others have just one.
Do not Loose the keepers! They are not very big...
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Valve spring longevity
