UUC Clutch stop Install

Installing a clutch stop is an extremely cheap performance mod. Basically, the clutch stop allows you to set how far you can depress the clutch pedal before you cannot depress it any further. This decreases the throw distance of the clutch and instinctively you will shift as soon as you feel the clutch pedal stop moving thus shaving fractions of a second off every shift.

My wife is learning to drive manual transmission and she finds it difficult to get the clutch pedal all the way to the floor, which is the only way to reliably know that you’ve pushed the pedal in far enough. I think the new clutch stop will help.

The clutch stop on the M3 is completely plastic and only about 1/2″ in length. The clutch stop in my e30 was slightly more engineered (like everything e30) and featured a 3/4″ bolt with a plastic disc on the top. Both are too short to make a noticeable change in the throw of the clutch pedal.

I ordered the UUC Big Boy Clutch Stop, which is not specifically for the e30 but installed and works fine. Both my M3 and e30 now have this clutch stop installed.

Installation is simple:

  1. Remove the old clutch stop which is located directly behind the clutch pedal. No tools should be required.
  2. Put the nut first, then the washer on the new clutch stop.
  3. Thread it into the hole where the old clutch stop was by hand until it is finger tight.
  4. Test it but depressing the clutch pedal and seeing if you can still shift. On the e30 you will need to do this with the engine running.
  5. Unthread more of the clutch stop bolt and adjust the nut and washer until it is long enough that the clutch just engages when the pedal is fully depressed. This is the ideal length and will result in the fastest shifts.
  6. If you cannot shift you need to set the clutch stop to be shorter.
  7. The first time you drive after installing the clutch stop you will be surprised how short the clutch throw feels. To me, I felt like the throw was 1/2 of what it was before even though the distance is only 1 1/2″ shorter.

    e36 m3 oem factory clutch stop location

    e36 m3 oem factory clutch stop

    uuc big boy clutch stop

    uuc big boy clutch stop installed

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October 22, 2013 e30, e36 m3, mechanical