|
Yes, I just pressed them on with a 13mm deep socket. It's pretty easy to see if they're on far enough if you are doing it on a head that's off the car with the valves removed. Doing it with the valves still installed, I got a straightened paper clip, slipped a pin between an already installed seal and valve stem to pry it away just enough to slide the paperclip down until it touched the valve guide, basicly taking a depth measurement. Then I would keep checking the seal as I was installing until the depth was the same. Tedious, but they start fitting very tightly as they get close to the proper depth, some fit tighter than others, and you do not feel when they go on too far if you use a hammer. It is possible to pull them back off and start over if you are really careful with an open ended wrench or other prying mechanism, but they do not seal against the valve stem well if they are installed past the little molded step inside. Some of them I had to push very hard to get them on, rotating the pressure around the seal helped, and you also have to be careful to get them on as squarely as possible. I'm sure there's some sort of special tool to do this with, which I've heard you definitely need if you use the white teflon seals.
The car has 157K, but the motor (from another car) only has ~ 3200 since the rebuild. No smoking or oil consumption, save for a leaking RMS.
__________________
1987 silver 924S made it to 225k mi! Sent to the big garage in the sky
|