1. 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
    WR = 2st Enduro & CR = 2st Cross

125-200cc 165 ring end gap

Discussion in '2 Stroke' started by shawbagga, Jan 4, 2017.

  1. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    Got 0.33mm(0.013") bout 15mm from top of cylinder squared up with piston. Sound bout right? Not sure if u checked this before u sent it back to me Walt but jus checkin before install?
  2. juicypips Husqvarna
    Pro Class

    Location:
    gloucestershire
    Husqvarna Motorcycle:
    wr 360. 2002
    Other Motorcycles:
    Gas Gas TxT 300, Yamaha wr250f
  3. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    Pretty much in the middle then. Shoulda known Walt would check this but never hurts to double check!

    Ha there was an idiot guide in ring packaging too!
    juicypips likes this.
  4. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    image.jpg
    New pistons look so good!

    Don't mind the dirty engine thort I was jus doin head orings 3 months ago that ended up bein a full top end hence jus a hose off. 24 degrees so good shed weather to get amongst it here. No beer tho, amateur mistake!
    Adam Sonerson and NCSteve like this.
  5. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    With cylinder torqued down(according to my elbow) my piston crown jus sits proud of cylinder. Minute but can jus feel it contact with a square edge wen placed across cylinder walls. How crucial is this to be at zero or below? Don't want piston/head contact!
  6. Oldscool Husqvarna
    AA Class

    Location:
    South Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    RM125, SWM RS500R & Superdual
    Sit the head on, no o rings, bolt her down and measure the squish clearance........all will be revealed my child
    juicypips and johnnyboy like this.
  7. juicypips Husqvarna
    Pro Class

    Location:
    gloucestershire
    Husqvarna Motorcycle:
    wr 360. 2002
    Other Motorcycles:
    Gas Gas TxT 300, Yamaha wr250f
    You do know how to to squish?
    Those namura pistons do look sexy but I've never used one.
    Will watch that side for your review.
  8. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    Namura shamura, that's a wiseco boy!

    Yeh I know how to check squish jus CBF doin it. Don't hav decent verniers either. Stuck the fat base gasket(0.8mm) Walt sent me so should be fine. If not then u cn say I'm an idiot n u told me so!:)
    I was toying with the idea of usin thinner base gasket(have a 0.4mm & 0.5mm from measuring em) that I got with top end gasket kit a while back but they would hav bn way too thin. Il keep em for next top end n double em up.
    Walt cleaned up/skimmed head a little to remove sum indents from wateva was bouncing round in ther. From my non mechanical eye it looks around the 1.5mm which b fine with our shitty fuel. Il kick her in the guts tomoro n see. Went half turn richer on rod n PJ jus to be sure this time!
    juicypips likes this.
  9. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    Hope impeller seal is ok after bein 'dry' for past 3-4 months(bn hot too!)
  10. wallybean Mini-Sponsor

    Location:
    Montana
    The impeller seals are pretty tough and bullet proof. I have seen 15 year old seals from a parts clutch case that had been sitting for who knows how long still seal and remain pliable.

    Your squish will be ~1.15 mm for your gas. It was set on my bench motor and yours isn't going to be off more than .05mm either way. Do not go with a smaller base gasket unless you are going to use race gas of at least 100 octane and at the very least check your squish before you run it. This configuration of Head/Piston shape does not like squish gaps of less than 1.0 mm +-.05mm. It creates too much friction with the bevel in the head matching the piston and you will actually lose some velocity and create micro areas of very high compression at the edges of the piston. Not good and it will also make jetting a nightmare. JFYI from my experience with the motor over the years.
  11. Zomby woof Husqvarna
    Pro Class

    Location:
    Ontario, Canada
    Husqvarna Motorcycle:
    2011 CR 150
    Useful info for those of us thinking about, or getting ready to assemble one. Thanks Wally
  12. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    See Walt allows for blokes like me n our laziness/dumbness!:)

    Jus looked at my PMs to u Walt n it was bloody 5 months ago! Lookin forward to ridin it again after sort this rear brake issue
    juicypips likes this.
  13. juicypips Husqvarna
    Pro Class

    Location:
    gloucestershire
    Husqvarna Motorcycle:
    wr 360. 2002
    Other Motorcycles:
    Gas Gas TxT 300, Yamaha wr250f
    Believe me a man's reputation is well earned.
    And I doubt he could accommodated for some one as stupid as you shawry but I'm sure he's done his best to make it fool proof.

    Now it's down to you.

    P.s. Sorry if I spoke outta turn Walt.
    shawbagga likes this.
  14. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    Jus givin the crowd wat they want mate!;)
  15. juicypips Husqvarna
    Pro Class

    Location:
    gloucestershire
    Husqvarna Motorcycle:
    wr 360. 2002
    Other Motorcycles:
    Gas Gas TxT 300, Yamaha wr250f
    Wait we can do that?!? How!
  16. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    It's alive, ITS ALIVE!!!
    Jus fired her up seems all good. Funny how after bein apart for a while u forget how good they look, sound, feel.
    Anyhoo doesn't seem to be any coolant leaks, sounds good, idles ok, compression thru kicker felt good(for 165), coolant circulatin, oil turnin over. Looks like a win touch wood. Took 4-5 kicks but was wearin thongs!:)

    Jus gotta sort this rear brake n cn ride it. Seems like air trapped in caliper.
  17. Huskynoobee CH Sponsor ZipTy Racing

    Location:
    Castaic, CA
    Husqvarna Motorcycle:
    2011 TE449 2006 WR250
    Other Motorcycles:
    HDUltra Classic IT200 YZ250 SV650s
    How would it not run with that sexy ass piston?
    wallybean and shawbagga like this.
  18. juicypips Husqvarna
    Pro Class

    Location:
    gloucestershire
    Husqvarna Motorcycle:
    wr 360. 2002
    Other Motorcycles:
    Gas Gas TxT 300, Yamaha wr250f
    In the words of Ronnie Mac "who needs brakes?, they just show you down!"
    wallybean likes this.
  19. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    Yeh but he can actually ride well unlike myself
    johnnyboy likes this.
  20. Down Under XC Husqvarna
    AA Class

    Location:
    Melbourne, Australia
    Husqvarna Motorcycle:
    XC250 83', WR250 87','XC150 10
    Other Motorcycles:
    WR165 10, 83 KDX 250,
    Hi Shawy,

    I had the same problem with no rear brake, after no riding, and also when I tried to bleed. the only solution for me was to remove and leave hanging in vice for a couple of days to allow all the air to rise naturally thru caliper / brakeline and pedal.

    Mark
    shawbagga likes this.