Re: EC SC pulley - noise when engine cool
Originally Posted by
ModlessG
I have had some clearance issues with the sc pulley since day one. It appears to stick with no clearance. I can push it and move it around to get back to the correct clearance. I now have several shims installed ,and will check it. Drive a few days check it again, and the clearance is different or gone.It appears to stick a bit. I believe the pulley fits too tight. When I first did the install it was so tight I could barely get it on the sc shaft. Right now it is working the best that it has. At least there is always some gap even though one time its a lot (.30+) .The next time its close (.10). The other weird thing since the tune.When I have the a/c on the idle jumps up and down by 300 rpm. Before the tune it was smooth as silk. I turn the a/c off and its fine again. As far as driving the car is a beast and pulls hard from 1200 rpm to the red line.
The pulley fit to the shaft does not affect the action at all as the pulley does not move once the bolt is tightened. The only parts that move are the clutch plate and the spring.
I assume the gaps you mention are fractions of a millimeter and not inches. This would make them .004" and .012" which would appear to be OK, sort of. If I recall correctly the gap should be between .008" to .012"?. Check these figures as Thirteendog has said I'm too old and I guess he figures I am failing mentally.
It has been noted before that the spring is thinner and weaker than the OEM spring.
Last edited by onehundred80; Apr 26, 2012 at 06:29 PM.