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Registered
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1980 911SC Squeal Shifting into Gear 915 Trans
Hi,
My 1980 911sc with 72k miles developed a squeal when shifting into any gear while upshifting. Sometimes it won’t stop as I drive until I disengage the clutch. If I rev-match when shifting into gear, it is greatly reduced, is temporary or doesn’t occur at all. Is this a clutch issue or a guide tube/throwout bearing issue? Should I try lubing the guide tube / throwout bearing from the inspection hole, or should I expect to completely pull the transmission and install a new clutch?
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1980 911SC US spec |
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07-18-2025, 08:13 PM
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Registered
Join Date: Mar 2001
Location: Marysville Wa.
Posts: 22,414
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Might want to drain the oil and remove the 4 stud plate on the center housing and see if the guide fork is loose.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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07-18-2025, 09:16 PM
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PCA Member since 1988
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Your description sounds like throw-out bearing noise. However, do what John recommended first, as that's easier to do.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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07-18-2025, 11:09 PM
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