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Thread: Not too good

  1. #1
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    Not too good

    Split my CRF engine this arvo. Big end bearing detroyed itself and the result isnt too nice. Luckily they have separarte crankcase oil and gearbox oil so the damage was limited to the the crankcase. The second photo is of all the metal that was floating around inside. In the first photo you can see where the piston has hit the crank shaft after the bearing collapsed and has mushroomed the bottom of the piston.

    crf4.jpg

    crf3.jpg

    crf2.jpg

    crf1.jpg
    Last edited by wbute; 12-08-2011 at 07:23 PM.

  2. #2
    Sandman Guru
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    Ouch!

  3. #3
    Certifiable ozbox's Avatar
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    good job...remind me not to lend you my bike..hahahahahaa

  4. #4
    It's a rockin' mauser's Avatar
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    Those 4-stroke MX bikes are never good when something goes wrong... its usually catastrophic.

    Mauser
    “485650 HQ's cant be wrong...”
    “You don’t drive a Kingswood, you make love to it. That’s why nuns only drive Toranas.” - Ted Bullpitt

  5. #5
    Sandman Driver RodneyHZ253's Avatar
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    Wb owners are rev heads history proves this.

  6. #6
    Leadfoot abncraig's Avatar
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    I seen some pretty cheap stroker cranks and rods for sale for crf's on the net. pretty cheap stuff going from the US. I think theres a crf'sonly website has heaps of gear on it don't know if they are the cheapest or the best to buy from but atleast a start......

    you had it in water??? my crf's been pretty good to me so far with the crap I put it through

  7. #7
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    abcraig i am going for a hotrods standard crank. prices are good. I dont understand why it did what it did. I run quality oil and change it all the time. It must have just been a dodgy bearing. Its gouged the cases so I am taking them to the dealer to have a look at. Hope they are ok.

  8. #8
    Leadfoot abncraig's Avatar
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    yea I hope ya case is alright but should be able to get it weld if it has to be I know my mates wrf case cost him 3k. It's probably changing the oil thing that imploded it, honda's love being treated rough. nah but changing the oil is about all the maintenence I do to mine. I bought 3 x oil filters of ebay the other day got em for 20 delivered. not a huge saving but a saving

  9. #9
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    $950 in parts so far. Plus $150 for a manual and a new chain guide. I am only paying labour for honing the bore and fitting main bearings and one gearbox bearing so that will be on top.

  10. #10
    Sandman Driver Gaddy's Avatar
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    Looks expensive mate! Would have been cheeper at the AHD!

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