640 625 lc4 KTM seized, suspected cooling problem

Discussion in 'Australia' started by unclemitty, Aug 16, 2018.

  1. dnrobertson

    dnrobertson Big Bike, Slow Rider

    Joined:
    Jun 30, 2008
    Oddometer:
    1,300
    Location:
    Frankston, Australia
    I was going to ask about this. Good to see I'm not the only one experiencing a rentention of fluid :-)
    unclemitty likes this.
  2. unclemitty

    unclemitty uncalamity superhero

    Joined:
    Jun 10, 2015
    Oddometer:
    77
    Location:
    Melbourne VIC
    Despite their known failures, I think I’ve got onto a decent radiator cap here. It would seem reasonable to consider the weakest part of the cap being the rubber seals and mine are pretty good.

    When I think about problems I’ve had with engines over the years, rubber seals seem to be a recurring theme; radiators, waterpumps, o-ring head gaskets, intake manifolds... I’ll keep monitoring this part and be careful if I start to loose coolant.


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    Oldfatbeerman likes this.