GeneralZod
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opcorn: will this be it? opcorn:
The Derploader
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opcorn: will this be it? opcorn:
ThatTmoGuy
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I'd try to think up a bump stop for the clutch pedal Just in case...
GeneralZod
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When you get the pressure plate in, see how it all lines up. If you notice additional slop, you have some decisions to make.
theenico
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Nice find. An 1/8" at the plate's friction surface could easily equate to 1/2" of additional travel where the slave hits the fingers.
If he goes that route, he'll have to do something to activate the ignition interrupt switch that is actuated at the bottom of the clutch pedal's travel.
Fortunately, if CM gets all the dimensional/stack up issues resolved, a pedal stop won't be needed.
If he goes that route, he'll have to do something to activate the ignition interrupt switch that is actuated at the bottom of the clutch pedal's travel.
Fortunately, if CM gets all the dimensional/stack up issues resolved, a pedal stop won't be needed.
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GeneralZod
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The M32 Martyr
The thicker friction pads cancel out the thinner pressure plate.
The CM stack and stock stack have equal heights.
The overall travel of the slave from bottom to point of full stop is: 9/16".
Subtract the 1/8" that the slave is resting away from bottom when it is static, and that leaves only 7/16th left of travel til failure.
The question now is how much travel does the CM unit allow? Any more than 3/8th will result in a blown slave.
The CM stack and stock stack have equal heights.
The overall travel of the slave from bottom to point of full stop is: 9/16".
Subtract the 1/8" that the slave is resting away from bottom when it is static, and that leaves only 7/16th left of travel til failure.
The question now is how much travel does the CM unit allow? Any more than 3/8th will result in a blown slave.
GeneralZod
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We know the first setup was over... But how much is the real question.
Or is it a CM's guess?
Only time will tell...
Or is it a CM's guess?
Only time will tell...
RS Turbo
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Just so you are all aware the Clutch has a Sensor not a Switch and must be learned. It is part of the pedal assembly and it is learned with GDS2 by the dealer.
RS Turbo
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There is a relearn as I understand in The Dealers tool know as the GDS2.
Clutch Pedal Position Sensor Learn
Note: The clutch pedal position (CPP) sensor learn procedure is required when the following service procedures have been performed regardless of whether DTC P080A is set:
•An engine control module (ECM) replacement
•A CPP sensor replacement
•Any repairs which affect the CPP sensor relationship
1. Install a scan tool.
2. Monitor the ECM for DTCs with a scan tool. If other DTCs are set, except DTC P080A, refer to Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC that set.
3. With a scan tool, select Clutch Pedal Position Learn under Module Setup in Manual Transmission, and perform the following instructions displayed on the scan tool screen.
Note: The CPP sensor learn procedure cannot be performed more than once per ignition cycle. The clutch pedal needs to be fully depressed and held steady throughout this procedure in order to perform a correct learning.
4. The scan tool will display under CPP Learn Status: Not Learned, In Process, Complete, Fail – Low Volt, Fail – High Volt, or Fail Moving. The scan tool will display under CPP Learn Status Complete if the process was successful.
5. If the scan tool indicates that DTC P080A ran and passed this ignition the CPP sensor learn procedure is complete. If the scan tool indicates DTC P080A failed or did not run this ignition, refer to DTC P080A. If any other DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for the applicable DTC.
6. Turn OFF the ignition for 30 s after the learn procedure has successfully completed in order to store the CPP sensor variation values in ECM history.
RS Turbo
New member
Vince it is a reading to the ECM only but can effect other things. The actual Throw of the Hydrolics will be the same psi but pedal travel many change for engagement.
It might effect Throttle responce or other things if not calibrated as well but that is not spoken by engineering and alot or things arent.
It might effect Throttle responce or other things if not calibrated as well but that is not spoken by engineering and alot or things arent.
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Preloader
The M32 Martyr
Thanks for that info. I'm still confused about how this could effect the hardware in my new clutch set-up. I'm still only at the point where I'm trying to get the aftermarket stuff to operate without blowing out my slave.
Once I get that part resolved, I'll gladly roll by the dealer and have the pedal sensor calibrated, but unless the sensor has any loop control that involves the hydraulics, I need to keep it out of my troubleshooting equation until I get the clutch slave to operate correctly.
Once I get that part resolved, I'll gladly roll by the dealer and have the pedal sensor calibrated, but unless the sensor has any loop control that involves the hydraulics, I need to keep it out of my troubleshooting equation until I get the clutch slave to operate correctly.
RS Turbo
New member
Vince the change of the position of the throwout bearing changed the position of the clutch pedal remembered state.
You just need to be aware of this is all I am saying.... The clutch stack up tolerance and position is learned and monitored as the clutch wears.
You just need to be aware of this is all I am saying.... The clutch stack up tolerance and position is learned and monitored as the clutch wears.
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Preloader
The M32 Martyr
I follow you now. And in the short 10mi that each of the slaves lasted, I neither got a CEL or had trouble starting, so if anything, this helps confirm that the CM stack height it good.
The only variable left is the possibility that the CM pressure diaphragm fingers travel more than the stock pressure plate, allowing overtravel of the slave.
I intend to bench test this theory in about an hour, and before I risk yet another slave.
The only variable left is the possibility that the CM pressure diaphragm fingers travel more than the stock pressure plate, allowing overtravel of the slave.
I intend to bench test this theory in about an hour, and before I risk yet another slave.
