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Old 04-18-2011, 08:57 PM   #1
Bernie
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1998 SL1
Default Deburring the clutch?

I have 73K miles on my 98 SL1. The linkage to the trans looks fine and the gear shift is lubed, but shifting is hard in the lower gears when the engine is on. It's the classic worn clutch scenario.
An old mechanic once told me that clutch plates can develop rough spots that can be polished off by intentionally slipping the clutch. Having nothing to loose, I tried it. Although it may be too early to tell, shifting seems to have improved. Could there be some truth to the old mechanic's trick?
Word of caution to those who might feel adventuresome - slipping the clutch can irreparably damage your car, and leave you stranded with very expensive repairs.

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Old 04-18-2011, 10:52 PM   #2
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Default Re: Deburring the clutch?

hmm... that's a new one. I would launch my 02 SC2 at 4000 RPM on occasion and it always felt smooth.

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Old 04-28-2011, 10:28 AM   #3
Bernie
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1998 SL1
Default Re: Deburring the clutch?

It appears that ease of shifting has improved significantly since I intentionally slipped the clutch (while in second gear with brakes set). This could also be due to the fact that I replaced a badly worn frowny motor mount around the same time.

I'm still having occasional difficulty shifting between first and reverse so a clutch job is inevitable though not immediately. I've also noticed that on a smooth and level surface the car will inch ever so slightly forward/backward when in first/reverse gear with the clutch pedal down and high RPMs. I only have 76,000 miles on this clutch but it has been mostly city driving. My guess is that the pressure plate fingers have gradually bent over, so much so that the disk, which may still have life in it, is dragging. The point is, you might be able to get a few more miles out of your clutch by intentionally slipping it (wearing it down).

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