1. Husqvarna Motorcycles Made In Sweden - About 1988 and older

Which piston?

Discussion in 'Vintage Restoration Projects' started by disonny, Dec 2, 2013.

  1. disonny Husqvarna
    AA Class

    Location:
    upstate ny
    Husqvarna Motorcycle:
    73 360 wr/rt, 75 wr250 78 cr250,
    Other Motorcycles:
    83 wr250, 84 wr400
    I'm doing the top end on my cr250. Which brand piston should I use, or what are my choices? The bore is 69.50mm . First over would be 70mm?
    disonny, Dec 2, 2013
    #1

  2. jo360 Husqvarna
    AA Class

    Location:
    perth australia
    Husqvarna Motorcycle:
    1983 exc framed wr430 engine
    Other Motorcycles:
    ktm 520exc
    probably mahle, then wossner.
    jo360, Dec 2, 2013
    #2

  3. 84scrambler Husqvarna
    Pro Class

    Location:
    mid Florida
    Husqvarna Motorcycle:
    87 xc 250, 85 wrx 250, 79 wr 250
    I am going with the wossner on my 79 wr. Here is whats available from Huskydoggg.com Don't let everyone confuse you about this term ( first over ) The first 3 below are just a quick hone or clean up (do it your selfy) Then after that and from there on you will have the cyl. bored over to the next piston size available by a machine shop . Take your cyl. in and have it checked by a machinist and he will measure the center part of the bore and give you the size needed (dont forget about the clearance needed) Also take your old piston with you and the list of piston size's available. Hope this helps...

    69.44
    69.45
    69.46
    69.94
    70.44
    70.94
    71.44
    84scrambler, Dec 3, 2013
    #3
    justintendo likes this.