Gearbox refresh | The Z Club of Great Britain
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Gearbox refresh

Discussion in 'Drivetrain' started by Tony Mc, Jul 30, 2021.

  1. Tony Mc

    Tony Mc
    Z Club Member

    Hi all,
    Looking for some guidance. My car is a US import 1973 with a 5 speed box.
    Having only recently got it roadworthy, myself and @jonbills went for a spin and believe the synchros could do with attention. 2nd gear is particularly troublesome. The gearbox oil has been changed.
    I have seen this kit https://zcardepot.com/products/tran...nchros-240z-280z-280zx?variant=19278645428337 and wonder if anyone has any advice before I dive in and get it. I would be taking the car to a proper gearbox specialist to do the work.
    Presume I would need 5 of these babies as well "Transmission Detent Ball Spring OEM 240z"
    Anything else?
    Thanks in advance for any input.
    Tony
     
  2. AliK

    AliK
    Z Club Member
    Staff Member Moderator

    Tony,

    is yours a European or American car? Beware that the US cars used the brass synchros you lined abs the European ones had steel synchros - and as far as I understand, they are not interchangeable! :(

    There was someone in Auz that used to make the steel ones but I think they have closed down.
     
  3. Tony Mc

    Tony Mc
    Z Club Member

    Thanks AliK
    It is an american market car. I believe 73 US models were 4 speed so it has been changed at some point to a 5 speed before coming across the pond.
     
  4. AliK

    AliK
    Z Club Member
    Staff Member Moderator

    In that case I wouldn’t go buying brass synchros. Are you able to wait until the winter to take it apart and see how bad it really is? Then you can make a more informed decision on what to buy and alternatives like an s12/13/14 gearbox.
     
  5. Tony Mc

    Tony Mc
    Z Club Member

    Yeah, cheers. No great rush.
    I'd assumed that all US market cars, 4 or 5 speed would be brass synchros.
     
  6. AliK

    AliK
    Z Club Member
    Staff Member Moderator

    Tony Mc likes this.

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