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Related Garage

2007_Yamaha_YZ_450F.jpg

Yamaha YZ450F (2007)


Owner: Yammy Rider
Added on November 29, 2016


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Need some quality opinions please



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7 replies to this topic
  • jonwayne14

    TT Newbie

12 posts

Posted October 11, 2016 - 12:12 PM


Hey guys I just got an 06 yz450f was out riding in sand and bike started stalling in neutral then stalled while driving and motor locked up later Tht night I found motor unseized on its own took it to the shop they didn't even open the motor they found Tht my air filter wasn't on properly and was old and allowed sand to pass through they instantly quoted me 1800 to fix they wanna replace everything so my question is am I setting myself up for failure if I find a place to just fix whts broke when it's tore apart instead of replacing everything I kno it's smarter to replace everything while it's tore apart I just simply can't afford 1800 and I don't feel qualified enough to do on my own just looking for others opinions it would b very appreciated

  • redbikejohn

    TT Member

97 posts
Location: United Kingdom

Posted October 11, 2016 - 12:22 PM


It's going to need a minimum of the following:

Piston kit.
New or re-coated barrel
Valves ? Maybe but worth cleaning them up and lapping in (if they can be done )
Lot of labour.

Price those bits up and see where that leaves you .

  • rideorange525

    TT Member

62 posts
Location: California

Posted October 11, 2016 - 12:27 PM


Call Travis at Thumper Racing. I did a big bore, valves, cam, clutch, water pump full rebuild top/bottom for a little less than that a few years ago.

  • jonwayne14

    TT Newbie

12 posts

Posted October 11, 2016 - 03:25 PM


Red bike what do u mean by barrel the cylinder? And I mean this kit includes everything I would think I need to b safe depending on how cyclinder and valves look

http://www.ebay.com/...3&ul_noapp=true

And the only thing I can think I may also need is new valves which aren't to bad I feel like I can get this done wth about 600-700 parts and I know somone whose educated enough to do the work so hopefully I can get out of this for 1000

  • jscoot116

    TT Bronze Member

461 posts
Location: Illinois
Garage View Garage

Posted October 11, 2016 - 04:15 PM


Either pay the money or your time, it's your choice.



  • Ride_Flip_Repeat

    TT Bronze Member

468 posts
Location: Maine
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Posted October 21, 2016 - 11:47 AM


Expect other things to come up while doing a rebuild. Broken powervalves in my yz 125....$220 used...



  • stevethe

    Get Help Now

5,213 posts
Location: California
Garage View Garage

Posted October 21, 2016 - 12:08 PM


I believe that Weisco crank is Chinese. I would use a factory stock crank.
  • Krannie McKranface, billygildark5007 and jscoot116 like this
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  • grayracer513
42,862 posts
Location: California
Garage View Garage

Posted October 25, 2016 - 08:27 AM


I believe I would not use a free Wiseco crank on someone else's bike.


  • Crashed Da and stevethe like this
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