1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

clunky shifting

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Old 03-19-04, 11:28 PM
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clunky shifting

Hey, Im driving an 85 GSL. The car shifts smoothly sometimes..but alot of times it is very clunky feeling. Recently, when I engage or disengage the clutch, i can here a small thunk. I also changed out the tranny oil the other day with some redline, when I pulled the bottom plug off, it had a bunch of stuff that looked like metal scrappings on the top...Am I looking at rebuilding the tranny? new clutch? both?

Thanks in advance
Old 03-19-04, 11:40 PM
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Metal stuff is a very bad sign, syncros could be worn and that's offering inconsistant shifting if some of the teeth are broken. Rebuilding could get costly, look for a good used one instead. I have 160,000 km, use synthetic oil and shift like butter. I remember going through the rebuild thing with a munci behind a 396 in a chevelle, ended up just replacing the whole damn thing in the long run.
Old 03-19-04, 11:44 PM
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I read somewhere that rx7s didn't have synchros in their trannies....but I'm not sure of that's true now.
Old 03-20-04, 12:24 AM
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definately have synchros, otherwise you'd grind gears everytime you changed gears, unless you double-clutched.
Old 03-20-04, 12:56 PM
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th eclunking could be a bad input shaft or its bearings.
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