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No 4th Gear??

Discussion in '308/328' started by jkfuller, Jan 6, 2017.

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  1. jkfuller

    jkfuller Rookie

    Sep 23, 2016
    10
    Sioux Falls
    Full Name:
    James Fuller
    #1 jkfuller, Jan 6, 2017
    My '75 308 GT4 won't shift into 4th. I shift from 1st to 2nd to 3rd to 4th, but what I get is 2nd... 5th gear works fine, but I can't ever get 4th gear. Downshifting from 5th to 4th also seems to only get 2nd gear. I'm judging this by the RPMs when I select what should be 4th gear.

    This is my first Ferrari, having bought it from a cousin-in-law a few months ago, so any help would be appreciated.

    Thanks,
    Jim
     
  2. Steve Magnusson

    Steve Magnusson Two Time F1 World Champ
    Lifetime Rossa

    Jan 11, 2001
    26,826
    30°30'40" N 97°35'41" W (Texas)
    Full Name:
    Steve Magnusson
    #2 Steve Magnusson, Jan 6, 2017
    Last edited: Jan 6, 2017
    You (or someone ;)) may eventually have to get into the gearbox, but your first suspect could be a shift shaft bushing (when you move the shift lever L-R, it should be rotating the shift shaft, which swings the actual selection fork over the three selection levers). Try a search on "shift shaft bushings" -- should get you a lot of relevant information on the whole subject with pictures (the two stock ones have rubber elements in them so needing to be refreshed every 30~40 years isn't unexpected).

    If you had "nothing" when trying to select 4th that would be a very bad sign for the internals, but mis-selecting 2nd, when wanting 4th, doesn't sound catastrophic, and has to be upstream of, or in, the selection fork system -- Good Hunting!
     
  3. jkfuller

    jkfuller Rookie

    Sep 23, 2016
    10
    Sioux Falls
    Full Name:
    James Fuller
    #3 jkfuller, Jan 6, 2017
    Steve, Thanks for your reply. I haven't had a chance to take a look at the linkage yet since my jack stands are being used by my daughter/son-in-law for an original domestic rebuild. I plan to start looking for solutions to my problems in the early Spring.
     
  4. Albert-LP

    Albert-LP F1 Veteran
    Owner Rossa Subscribed

    Sep 1, 2010
    8,175
    around Modena, Italy
    Full Name:
    Alberto Mantovani
    #4 Albert-LP, Jan 7, 2017
    Looks to be a linkage problem that doesn't require a gearbox service.

    Ciao
     
  5. Andy 308GTB

    Andy 308GTB F1 Rookie
    Lifetime Rossa

    Jun 2, 2004
    2,669
    Essex, UK
    Full Name:
    Andy M
    #5 Andy 308GTB, Jan 7, 2017
  6. mwr4440

    mwr4440 Five Time F1 World Champ
    Rossa Subscribed

    Jun 8, 2007
    57,971
    Bavaria, The 'Other' Germany
    Full Name:
    Mark W.R.
    #6 mwr4440, Jan 7, 2017
    Guys, honestly if nothing more than the linkage is no longer in perfect adjustment, changing silent blocks and changing out oil/tranny sump sealing rings is dead easy (still a PITA) even for this moron who never did more than change oil and plugs in a '74 Mustang II.

    Have a little faith in yourselves, think and ask questions.

    You will be JUST FINE. :)
     
  7. sltillim

    sltillim Formula 3
    Silver Subscribed

    Nov 22, 2009
    1,697
    San Diego
    #7 sltillim, Jan 7, 2017
    +1. I had the same downshift issue and chasing out the bushings fixed it. You can get them from verrell.
     

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