250 Rs250 won’t select 5th gear

Discussion in 'Mechanical - Engine, Gearbox, Exhaust etc' started by Tommy578991, May 6, 2019.

  1. Hi guys having a gearbox issue with my rs250

    Took it to silverstone last month and halfway through the day I lost 5th gear
    There’s no crunching of any kind it just won’t go in, almost like somethings fallen in the way
    I can only replicate it when the cars been driven and the oil is warm
    When cold it slides in no problem
    I changed the gearbox oil about 3 months ago

    Anyone have any ideas before I send it off to a specialist?

    Tia
     
  2. ianplymouth

    ianplymouth RSM Club Member

    Sounds like you have burnt the bulk ring, thicker(cold) oil is helping to select
     
  3. Excuse my ignorance on gearboxes
    But will that require going off to a specialist or is it something I can access without cracking it open?
    Cheers
     
  4. ianplymouth

    ianplymouth RSM Club Member

    It will need to be opened up, the bulk rings spin the gears so they align and mesh
     
  5. Ahh fair enough
    Dear fix?
    Is that common on these?
    I struggled to find anyone who’s had issues with a 250 gearbox
     
  6. ianplymouth

    ianplymouth RSM Club Member

    Not sure how much it will cost, will also depend on who's doing it and where.
    There have been a number of problems with the mk3 gearbox's, mainly bearings are a problem on these, do a search on here, think there has been a few replaced while under warranty, one i believe with 24k miles on the clock.
     
    Tommy578991 likes this.

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