 Where to make the cut on a clutch tube repair? |
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| Tdskip |
 Apr 30 2026, 01:14 PM
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#1
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Advanced Member  Group: Members Posts: 3,775 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None 
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So as some of you may remember, I’ve been battling a shifting issue that I diagnosed as an improperly rebuilt transmission so I bought a replacement one from Bruce (that had been rebuilt by our very own Dr Evil) I’m having the same issues getting gears with the engine running. New coupler, bushings good, shifter adjusted properly, clutch linkage not bent etc…
So that means my inability to get gears is most likely the clutch tube flopping around. It appears I need to open up the tunnel and I wanted to ask if where my finger is pointing is the right spot to make a cut? Thanks!   |
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| 930cabman |
Apr 30 2026, 01:18 PM
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#2
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Advanced Member Group: Members Posts: 4,644 Joined: 12-November 20 From: Buffalo Member No.: 24,877 Region Association: North East States
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No pics, but I took out a whole section about 3" x 10" for general repairs. When done I will simply tack in back in
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| JeffBowlsby |
Apr 30 2026, 01:35 PM
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#3
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914 Wiring Harnesses & Beekeeper Group: Members Posts: 9,246 Joined: 7-January 03 From: San Ramon CA Member No.: 104 Region Association: None
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STRONGLY recommend that you remove the shifter, and/or open the forward tunnel access panel to inspect actual conditions. Using a mirror and flashlight, or better a borescope, look for the issue. Inspect the front tube and middle tube brackets, and also the rear firewall below the engine bay.
Make a conclusion only after inspection, then deciding on the repair(s) can be discussed. |
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| Tdskip |
Apr 30 2026, 01:45 PM
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#4
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Advanced Member Group: Members Posts: 3,775 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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QUOTE(JeffBowlsby @ Apr 30 2026, 02:35 PM)  STRONGLY recommend that you remove the shifter, and/or open the forward tunnel access panel to inspect actual conditions. Using a mirror and flashlight, or better a borescope, look for the issue. Inspect the front tube and middle tube brackets, and also the rear firewall below the engine bay. Make a conclusion only after inspection, then deciding on the repair(s) can be discussed. Good coaching Jeff, thanks. @930cabman - The area is all structural so opening up a good size working space isn’t the end of the world, that’s a good tip too. |
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| dr914@autoatlanta.com |
Apr 30 2026, 02:02 PM
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#5
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914 Guru Group: Members Posts: 8,236 Joined: 3-January 07 From: atlanta georgia Member No.: 7,418 Region Association: None |
there is a diagram in the appendix of the tech tips 700
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| Tdskip |
Apr 30 2026, 02:16 PM
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#6
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Advanced Member Group: Members Posts: 3,775 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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QUOTE(dr914@autoatlanta.com @ Apr 30 2026, 03:02 PM) there is a diagram in the appendix of the tech tips 700 Sorry but I am not familiar with that resource, where is it located? Thanks for the post. |
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| barefoot |
Apr 30 2026, 03:44 PM
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#7
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Senior Member Group: Members Posts: 1,505 Joined: 19-March 13 From: Charleston SC Member No.: 15,673 Region Association: South East States
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here's where I cut open to get access to the front bracket,
enlarged the opening between 2 round ports ; BTW I just used a clamp intended for electrical conduit, took a little blacksmithing to get correct curvature (a 3/8 extension was perfect anvil) then 1/4" bolt, no welding Barefoot  |
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| Tdskip |
Apr 30 2026, 09:38 PM
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#8
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Advanced Member Group: Members Posts: 3,775 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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QUOTE(barefoot @ Apr 30 2026, 04:44 PM) here's where I cut open to get access to the front bracket, enlarged the opening between 2 round ports ; BTW I just used a clamp intended for electrical conduit, took a little blacksmithing to get correct curvature (a 3/8 extension was perfect anvil) then 1/4" bolt, no welding Barefoot Thank you, appreciate the reply. |
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| Montreal914 |
Apr 30 2026, 11:18 PM
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#9
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Advanced Member Group: Members Posts: 2,092 Joined: 8-August 10 From: Claremont, CA Member No.: 12,023 Region Association: Southern California
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A long time ago I was able to repair mine without cutting the tunnel.
If I recall, I drilled a hole (or two) on the side of the tunnel and did a plug weld. When removing the shifter, you are able to see more of what is going on. Again this was many years ago, but I weld it back without cutting anything. Sorry, its kind of vague but I am sure I saw this somewhere here. |
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| Tdskip |
May 1 2026, 04:32 AM
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#10
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Advanced Member Group: Members Posts: 3,775 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None
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QUOTE(Montreal914 @ May 1 2026, 12:18 AM) A long time ago I was able to repair mine without cutting the tunnel. If I recall, I drilled a hole (or two) on the side of the tunnel and did a plug weld. When removing the shifter, you are able to see more of what is going on. Again this was many years ago, but I weld it back without cutting anything. Sorry, its kind of vague but I am sure I saw this somewhere here. I have the shifter out, will take a look with a bright light to see what I can see. Seems like a good time to replace the clutch cable itself in case there is some stretching or weirdness going on with that, no? |
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