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The reason the YFZ blew!

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Old Apr 6, 2004 | 06:44 PM
  #21  
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Default The reason the YFZ blew!

pudl,

Man...I am sorry that I was right, it was rod/piston related. Well...now we both have had the fun of a blown engine. Lets just talk about it over a few beers at my house.


03 black and red Raptor
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Old Apr 6, 2004 | 06:53 PM
  #22  
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Default The reason the YFZ blew!

Originally posted by: NJRaptor419
Originally posted by: GE4x4
But don't be suprised if you start seeing them drop like flies around you. I know our preddy's may have some kinks but not like this!!!
Never miss a chance to yamaha bash, huh?
ya he wasnt bashing... pay attention before you speak.
 
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Old Apr 6, 2004 | 07:12 PM
  #23  
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Default The reason the YFZ blew!

Went to the stealer ship last week, there were 4 YFZ 450's out of 9 bikes and quads sitting in the repair shop. Now it could be they were in for normal maintenace, but it sure caught my eye.
 
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Old Apr 6, 2004 | 08:35 PM
  #24  
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Default The reason the YFZ blew!

I just had to go to the dealer and see the carnage for myself!! WOW!! The rod was twisted and got stuck down in the crank. 2 valves got bent, and the wrist pin got totally ripped out of the piston and the whole bottom of the piston was pretty much gone, and distributed throughout the engine in thousands of little pieces. I took the wrist pin, and it seems odd that there isn't a roller berring around it, as polaris uses that. Anyway, it rolled freeley in the top of the rod, no friction or catching, even considering it just went through hell. There was also a major hole in my cylinder!! I want to find out what is the actuall cause of these YFZ's blowing engines! I want to get an aftermarket part to replace what is causing the problems! I race with Jerry, and I know Bartlett does his motorwork. I'm curious to hear what happened to his!!
 
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