wr 450 crank question?


6 replies to this topic
  • dr x

Posted August 20, 2007 - 04:27 PM

#1

04 wr 450

Hi, does anyone know if i can replace just the cam chain sprocket on the crank shaft?
My dealer said i would need to buy half a crank and get it pressed on to my half.
Has anyone had to do this?

Thanks J

  • pops 56

Posted August 20, 2007 - 11:47 PM

#2

Sorry to say I think he is right cam chain sprocket on the crank shaft is part of the crank. Is it worn?. I replaced my cam chain at 10.000 klm the cam chain sprocket was like new?

  • dr x

Posted August 21, 2007 - 03:10 AM

#3

Thanks for the response,

This engine is a good advert for regular maintenance, i bought the bike cheap in a pretty bad state knowing it needed a bit of work, it had quite a few trick bits on it and the guy had powder coated the frame so i thought this would offset the cost of the rebuild.
When i opened up the engine i was shocked, it looked like the cam chain had been slipping and the piston had been left way past its service limit.

Total damage:
two cams mashed
crank sprocket mashed
barrel worn through coating
head journals dont look good

Hundreds of pounds of damage caused by a £20 cam chain and £100 piston

I plan to rebuild it slowly over the winter with a big bore, hot cams etc etc so ive got monster spare engine.

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  • pops 56

Posted August 21, 2007 - 05:45 AM

#4

You are right about no regular maintenance. I owned a motor bike shop for a while. Hard to work some people out .Good luck with the rebuild .:thumbsup:

  • dr x

Posted August 21, 2007 - 07:13 AM

#5

Thanks for the help :thumbsup:

  • GCannon

Posted August 21, 2007 - 07:40 AM

#6

Try this a complete new crank shaft (with new timing gear)
http://www.hotrodspr...=2005&enter=Go!

Search posts by Birdy426 He went through this as well and posted very insightfull information:thumbsup:

  • dr x

Posted August 21, 2007 - 09:31 AM

#7

Try this a complete new crank shaft (with new timing gear)
http://www.hotrodspr...=2005&enter=Go!

Search posts by Birdy426 He went through this as well and posted very insightfull information:thumbsup:


Thanks :thumbsup:




 
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