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Old Sep 2, 2016 | 09:20 PM
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onehundred80
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Joined: Apr 2006
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From: Ontario
Default Re: Chirp from the sc clutch?

Originally Posted by bbsrt6
I've been noticing a consistent noise. I haven't really paid too much attention to it until now, but I think what I'm hearing is a chirp from the sc clutch engaging. It only happens in 1st gear when I'm in manual mode. It doesn't matter how fast or slow I accelerate, but when I hit right around 3k rpm, I hear a chirp and feel a massive shove in torque. I think before I thought that it was just wheel spin from the surge in torque, but now I think it's the clutch engaging. If I rev over the 3k and it happens and then decelerate and try to hit 3k to hear it again it doesn't happen, unless I come to a stop and accelerate again. Now, I've read a thread or two over on mbworld and they said the chirp was normal as the clutch and pulley age, but I would assume the clutch should be engaging somewhere between 1600-1800 rpm. If what I'm hearing is my clutch engaging, I don't know why it's not engaging until 3000 rpm. Should I be concerned? Any thoughts are appreciated.
I read that the SC does not disengage until the car is stopped, Woody did a test to prove that. So you would not hear the chirp until you have stopped the car and start of again.
You are using the Polish 65 mm pulley from what I have read on your posts, is it possible that there is a problem somewhere on it? I am not saying there is but I would inspect it and see that the magnet has not been damaged like Red Dogs one was some time back and that it is affecting the clutch operation. Worth a look I would say.
 
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