The XT550 Thread: Info, Stories and Mods Inside!

Discussion in 'Thumpers' started by XTwarrior, Feb 16, 2010.

  1. Ohhhh

    Ohhhh Adventurer

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    Dec 21, 2019
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    sheffield
    Thanks for the heads up - we have got another engine together and back in the bike, my son kicked it over and discovered that there was a spark by acting as the earthing point so nearly there. I have the Frankenstein engine downstairs ready to put together. Surprisingly the spare cases that came with the basket case are from an XT400 (5Y6) and have an insert ring around the barrel opening, everything else being the same, looks like if I machine the insert off the barrel will fit.
  2. DJCW

    DJCW Adventurer

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    Can't count how many times I have acted as the earthing point to check the spark. Haha, usually 'cos I lost the coin toss.
  3. Ohhhh

    Ohhhh Adventurer

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    Anyone had any experience of Yamaha dating certificates - sent off my request yesterday?
  4. Ohhhh

    Ohhhh Adventurer

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    does anyone know if the camshaft is the same between the xt400 and xt550 ?
  5. Wyoman64

    Wyoman64 Thumper XTraordinaire

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    Hi all. I haven't been on here in ages. My XT has developed a pretty noticeable piston slap. I've searched and can't find a first oversize piston and rings. My question is if anyone knows, offhand, if I can bore my 92mm 550 jug to take a 95mm stock 600 piston and rings, or do I need a 600 jug?
  6. Ohhhh

    Ohhhh Adventurer

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    Hi _ I have a rebored 550 barrel with a 600 piston - there are some who say that this is too much but seems to work - I tried to get oversize pistons but they are like hens teeth
    Squily likes this.
  7. AllBlackPearl

    AllBlackPearl Alpoholic

    Joined:
    Nov 9, 2008
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    854
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    (working on getting out of) London, UK
    Sorry for "hijacking" this thread but I just came across this beauty the other night in Thessaloniki. I couldn't believe my eyes... It looked like straight out of the showroom. Just wanted to share.

    IMG_20200211_210348.jpg

    IMG_20200211_210401.jpg

    Attached Files:

  8. ernestoXT550

    ernestoXT550 Adventurer

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    Oddometer:
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    Greece Athens
    και με ψαλιδακι ΙΤ..
  9. JensEskildsen

    JensEskildsen Long timer

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    A friend has a 550 cylinder bored out and fitted a xt600 piston. She said there was a need to remove ever so slightly a bit of material from the piston to clear the valves perfectly. So pay attention when putting it together.
    Squily likes this.
  10. AllBlackPearl

    AllBlackPearl Alpoholic

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    Ah yeah? That's the swing arm, right? I don't know the term ψαλιδακι in a motorcycle context... :shog
    ernestoXT550 likes this.
  11. ernestoXT550

    ernestoXT550 Adventurer

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    13392250_10201853177088627_4004959093340378508_o.jpg

    mine..
  12. AllBlackPearl

    AllBlackPearl Alpoholic

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    Bloody hell, that's a beauty!! :raabia

    Do you know the guy in Thessaloniki by any chance?
  13. ernestoXT550

    ernestoXT550 Adventurer

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    if you like old beauties spend a ride on this address ..
    yamaha xt club tel 2310600500 Λαγκαδά 211, Σταυρούπολη, 56430, ΘΕΣΣΑΛΟΝΙΚΗΣ
    AllBlackPearl likes this.
  14. AllBlackPearl

    AllBlackPearl Alpoholic

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    Maybe next time I'm there! Back home now...
  15. DJCW

    DJCW Adventurer

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    Amazing what they do with these bikes. Now if I win the lottery, a full rebuild and recondition for my XT 550 is first on the list. (before I tell the wife we won!)
    Westcoasthumpin likes this.
  16. Wyoman64

    Wyoman64 Thumper XTraordinaire

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    You should check out "XT Club Greece" on Facebook. The XT550 has a cult following in Greece and there are hundreds of completely tricked out bikes in Athens...
    AllBlackPearl likes this.
  17. Wyoman64

    Wyoman64 Thumper XTraordinaire

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    Mine is for sale...
  18. Wyoman64

    Wyoman64 Thumper XTraordinaire

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    I'm trying to figure out if a stock 600 barrel and piston will fit the 550 lower end and cylinder head.
  19. JensEskildsen

    JensEskildsen Long timer

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    Im pretty sure the early xt600 cylinders will fit.
    As I recall theres a studpattern or something like that, that changes on the later models, making them not fit.
    Wyoman64 likes this.
  20. ernestoXT550

    ernestoXT550 Adventurer

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    May 2, 2017
    Oddometer:
    75
    Location:
    Greece Athens
    fit perfect if you need info send me pm