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With all the talk of crankshaft thrust bearings failing lately in the 2G DSMs we set out to measure the throw out bearing pressure that the popular DSM clutches give. This is the amount of pressure that is on both your throw out bearing and your crankshaft thrust bearing when you are standing on your clutch pedal. When a clutch is installed, it will be in the 1/4" to 3/8" travel area. At release it will be in the 1/2" area. All the more reason to disconnect that clutch pedal starter switch. |
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1/8" |
1/4" |
3/8" |
1/2" |
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Stock, Used, 60k miles+ |
230 |
340 |
475 |
475 |
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Stock , new Auto Specialty (Daiken) |
260 |
380 |
420 |
420 |
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Clutch Masters 2100lb, used, 40k miles |
200 |
380 |
470 |
520 |
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Clutch Masters 2100, used, 20k miles |
210 |
340 |
420 |
470 |
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Center Force Ball Bearing 2500 lb, new |
190 |
370 |
470 |
480 |
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ACT 2100, used, 20k miles |
200 |
360 |
470 |
520 |
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ACT 2100, new |
240 |
390 |
500 |
560 |
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ACT 2600, new |
310 |
530 |
660 |
710 |
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Exedy, used, 20k miles |
220 |
420 |
530 |
580 |
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These are measurements of actual clutch pedal effort as the clutches are installed. The clutches vary a lot and this helps explain why one guy says that the ACT 2600 is no problem and another guy is crying it is too stiff. There are a lot of factors that can influence the amount of effort required to get the pedal to the floor. The 2G cars have a heavier assist spring on the pedal assembly, this will make their numbers lower. |
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Clutch |
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Car |
lbs Pedal Effort |
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Stock |
Joe O |
90 AWD |
23 |
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ACT 2600 |
Ty |
90 FWD |
45 |
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ACT 2600 |
Crock |
93 AWD |
29 |
|
ACT 2600 |
Bill M |
91 GVR-4 |
36 |
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ACT 2600 |
Jack |
90 AWD |
43 |
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RPS |
Julius |
92 AWD Rally Car |
28 |
|
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Clutch Masters 2100 |
Faizal |
92 AWD |
22 |
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Clutch Masters 2100 |
RRE |
92 FWD race car |
23 |
|
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Clutch |
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Car |
lbs Pedal Effort |
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ACT 2600 |
Nick |
97 AWD |
34 |
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Ty's Right leg |
Ty's ACT 2600 leg |
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