 This doesn't look good..., Throwout arm getting destroyed |
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| cassmcentee |
 Jul 5 2025, 06:38 AM
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#1
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Member  Group: Members Posts: 228 Joined: 12-July 18 From: Squaw Valley, CA Member No.: 22,304 Region Association: Central California 
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Hello all, just separated my trans from the motor and found that the clutch unit is tearing into the throw-out arm. What have I done wrong??? What are my options???
(been gone for a while, just got back from The US Open at Oakmont)   |
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| Tom1394racing |
Jul 5 2025, 06:48 AM
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#2
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Member Group: Members Posts: 457 Joined: 25-August 07 From: CT Member No.: 8,039 Region Association: North East States
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The clutch pedal backstop needs to be adjusted so the arm does not contact the PP when the pedal is fully depressed.
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| cassmcentee |
Jul 5 2025, 06:53 AM
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#3
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Member Group: Members Posts: 228 Joined: 12-July 18 From: Squaw Valley, CA Member No.: 22,304 Region Association: Central California
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QUOTE(Tom1394racing @ Jul 5 2025, 07:48 AM)  The clutch pedal backstop needs to be adjusted so the arm does not contact the PP when the pedal is fully depressed. I wasn't aware of a backstop, thank you Tom, figure I need to weld some meat back into the arm as well. (IMG:style_emoticons/default/welder.gif) |
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| fixer34 |
Jul 5 2025, 10:35 AM
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#4
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Senior Member Group: Members Posts: 1,299 Joined: 16-September 14 From: Chicago area Member No.: 17,908 Region Association: Upper MidWest
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QUOTE(cassmcentee @ Jul 5 2025, 07:53 AM) QUOTE(Tom1394racing @ Jul 5 2025, 07:48 AM) The clutch pedal backstop needs to be adjusted so the arm does not contact the PP when the pedal is fully depressed. I wasn't aware of a backstop, thank you Tom, figure I need to weld some meat back into the arm as well. (IMG:style_emoticons/default/welder.gif) Wouldn't that be when the clutch pedal is fully released? The arm at that spot would move away from the pressure plate when the pedal is depressed. |
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| BillC |
Jul 5 2025, 11:12 AM
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#5
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Senior Member Group: Members Posts: 674 Joined: 24-April 15 From: Silver Spring, MD Member No.: 18,667 Region Association: MidAtlantic Region
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QUOTE(fixer34 @ Jul 5 2025, 12:35 PM) QUOTE(cassmcentee @ Jul 5 2025, 07:53 AM) QUOTE(Tom1394racing @ Jul 5 2025, 07:48 AM) The clutch pedal backstop needs to be adjusted so the arm does not contact the PP when the pedal is fully depressed. I wasn't aware of a backstop, thank you Tom, figure I need to weld some meat back into the arm as well. (IMG:style_emoticons/default/welder.gif) Wouldn't that be when the clutch pedal is fully released? The arm at that spot would move away from the pressure plate when the pedal is depressed. Yes, @fixer34 is correct -- the release arm is dragging on the pressure plate when the clutch pedal is up. My guess is that someone put a thick washer (or a couple of washers) under the pivot ball, moving the release arm too close to the pressure plate, causing the arm to rub on the pressure plate when the clutch is released. Usually the pivot ball is spaced out only when the flywheel is machined, to take up the extra space caused by the clutch face being moved forward (due to the machining). Did you or someone put a new flywheel on the engine recently? If so, I'm guessing y'all forgot to check the pivot ball for washers. |
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| mb911 |
Jul 5 2025, 03:51 PM
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#6
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914 Guru Group: Members Posts: 7,600 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest
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QUOTE(BillC @ Jul 5 2025, 09:12 AM) QUOTE(fixer34 @ Jul 5 2025, 12:35 PM) QUOTE(cassmcentee @ Jul 5 2025, 07:53 AM) QUOTE(Tom1394racing @ Jul 5 2025, 07:48 AM) The clutch pedal backstop needs to be adjusted so the arm does not contact the PP when the pedal is fully depressed. I wasn't aware of a backstop, thank you Tom, figure I need to weld some meat back into the arm as well. (IMG:style_emoticons/default/welder.gif) Wouldn't that be when the clutch pedal is fully released? The arm at that spot would move away from the pressure plate when the pedal is depressed. Yes, @fixer34 is correct -- the release arm is dragging on the pressure plate when the clutch pedal is up. My guess is that someone put a thick washer (or a couple of washers) under the pivot ball, moving the release arm too close to the pressure plate, causing the arm to rub on the pressure plate when the clutch is released. Usually the pivot ball is spaced out only when the flywheel is machined, to take up the extra space caused by the clutch face being moved forward (due to the machining). Did you or someone put a new flywheel on the engine recently? If so, I'm guessing y'all forgot to check the pivot ball for washers. Question wouldn’t you hear that? |
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Posts in this topic
cassmcentee This doesn't look good... Jul 5 2025, 06:38 AM
JamesM
My guess is that someone put a thick washer (or a... Jul 6 2025, 11:28 AM Tom1394racing
[quote name='cassmcentee' post='3213425' date='Ju... Jul 6 2025, 08:24 AM
porschetub Bens comment :agree: ,the noise must have been ve... Jul 5 2025, 11:11 PM fixer34
Bens comment :agree: ,the noise must have been v... Jul 6 2025, 07:07 AM rgalla9146 Whole lotta crank end play ?
Is the car new ... Jul 6 2025, 07:35 AM |
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