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what have I done!!!

Discussion in 'XJ Technical Chat' started by porch10, Mar 23, 2008.

  1. porch10

    porch10 New Member

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    Hi everyone, just needed to talk to people who probably understand the frustration and that real sinking feeling you get when trying to make a silk purse out of a sows rear end.I am still in the process of stripping my 750 maxim and eveything I touch seems to break off and everything I take off needs major surgery.Got most things off and trying to get the engine out but can't get the exhaust pipes out of the engine also struggling to disconnect the shaft drive flange.Anyway I just wanted to have a moan to anyone (wife doesn't understand she even said she woudn't help me lift the engine out!!)
     
  2. Polock

    Polock Well-Known Member

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    if the collars are off the pipes the only thing holding them is bad luck,some pb blaster and 24hrs should fix that
    drive shaft flanges can be real tight, six point box end, in gear and a sharp smack on the wrench should do it
    it's going to be darn near imposable to get the engine out yourself, get some help, big guys that move pianos are best
    ask the wife if she will at least drive you to the hospital if she won't help
     
  3. greg_in_london

    greg_in_london Member

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    Why do you want to strip the engine down ? If the mileage is so phenomenally high that it needs to be stripped (maybe 150,000 miles or more) then it will be cheaper to buy a low mileage engine than repair that one.

    I rebuilt my 550 lump many years ago - it has a hyvo primary chain where the 650 and 750 have a gear drive - and found myself replacing parts as needed - primary chain guide, camchain and guides, gaskets, big end and main bearing shells etc - nothing over the top, but more than I expected. The cost and hassle added up to more than another engine would have been although it was a good learning experience.

    If the engine is basically functioning, leave it in one piece and just clean and service it, you will get plenty of life out of it. If top end work is needed, then that can be done in situ, without any risk of backstrain.
     
  4. porch10

    porch10 New Member

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    Thanks guys,I'm not worried yet about the drive shaft flange but the flanges that hold the exhaust pipes are refusing to budge I have the nuts off but the flanges appear to have corroded themselves to the studs.I may have to destroy the flanges and see if I can pick some up on e-bay.The reason I am taking the engine out of the frame is not to strip the engine but to get at the frame to check it out rub it down and repaint it as it is in a bad way with surface rust.Also the bike is a Midnight Maxim and so the engine was painted black.That also is in a bad way and needs the paint stripping and then re-painting,so I thought it would be easier to do out of the frame.I have no history on the bike, I got her a month ago and only know she has been stood outside for years and needs completely overhauling.
     
  5. yamabobber

    yamabobber Member

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    i have a 650 and a 750, but the 750 frame was rusted though BAD! as far as the pipes go, just as POLOCK said spray and wait.
    the motor is really not that bad
    me 145 soak and wet and my partner swaped motors using the bike jack
    hint make sure you take off the oil filter first. atleast it was a problem for me
    anyway good luck we all need it
     
  6. RickCoMatic

    RickCoMatic Well-Known Member

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    Getting an all original exhaust system off a 20-year old bike can be one heck of a fight.

    Get hold of a Hard Rubber Mallet.
    Start tapping the Piped to the left and right with the Mallet until they start to move.

    Then, spray them in the Flanges with PB Blast.
    Do some more "Left and Right" with the Rubber Mallet.
    More Blaster.
    Let them soak it in for awhile.

    Now you need a second pair of strong hands.
    One of you is going to have to do some Left and Rights ...
    The other one is going to have to pull onn the Pipes while you loosen the death grip the Collector has on the Down Pipes.

    You measure success in mm's.
    But, once you get things "Moving" they creep out a mm at a time ... until the swearing is done and the smiles happen because you won the fight.

    It IS a battle.
    Don't think it's not going to be a fight!
    It's a 15 Round Heavyweight Championship!
     
  7. Jon81550Maxim

    Jon81550Maxim Member

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    When I pulled the motor on my 550, I used a come-along hooked to a beam in the ceiling and lifted the motor. I then just shifted the frame around to move it away from the motor.
    You just need to get the right hold of the motor to be tilted the right way with the come-along. No straining the little fellas :)
    Use the frame craddle to balance the weight of the motor as you shift the chains around the frame. Use blocks of wood to keep the motor from falling over.
    I took the motor out and put it back in myself.
     
  8. RickCoMatic

    RickCoMatic Well-Known Member

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    The Number One safety concern for pulling an Engine is not having the Frame fall-over while you are lifting-out the Engine.

    That's why I suggest having a few people around for the actual "Lift-out"

    Somebody can steady the frame and a second pair of hands can help lift and guide the Engine out on to the floor.
     
  9. turbobike

    turbobike Member

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    i rebuilt my turbocharger

    only to have the shaft snap in half...

    that was the only reason i bought this bike, because it was turbo'd.

    so.. I know how it feels x10
     

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