Valve Stem Seals

[87Turbo-TWE4]

Do the heads have to be removed to change these?

 

[novaderrik]

nope, but it is easier. you need to take off the rocker arms and compress the spring to get the keepers off.. and don't let the valve fall down into the cylinder when the spring is off- bring the cylinder up to tdc and pressurize the cylinder with an air compressor hooked to the hose from a compression tester.

 

[turbofabricator]

Remember that there are not any seals on the exhaust side if they are stock heads. You can also hold the valve shut buy putting the piston at the bottom of the bore, then feed a 1/4" daimeter cotton rope into the spark plug hole, and leave about a foot hanging out of the hole. (so it doesn't fall into the bore requiring head removal to get it back out.) Then rotate the crank so the rope gets compressed into the combustion chamber and remove the valve retainers, springs and keepers. replace the parts and reverse the process.