GYTR head problems.


1 reply to this topic
  • Lyrikz74

Posted August 14, 2014 - 06:43 AM

#1

2009 YZ450f. GYTR head. Riding this summer and the bike just stalled, would not restart. Finally took it apart today and saw the cams were off a few teeth.. I tore the head off and i noticed that on the intake cam journals they appear to be a little bit smooshed. I cant pull out the valve buckets on the intake side.

Is this something GYTR can fix, or should i just source a new head??? Bike was meticulously maintained.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted August 14, 2014 - 07:33 AM

#2

Send the head to Engine Dynamics.

 

It sounds like you seized a cam.  The most common reason for that is improper assembly (overtorque, uneven torque, failure to tighten in steps, failure to align and fully seat the caps prior to tightening, ,etc.).  Next is inadequate clearance, then oiling problems.







Related Content

Forums
Photo

YZ450F 03 Sparks driving me crazy by SirAttard


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies
Forums
Photo

Megabomb Fitment by 288yz450


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply
Forums
Photo

James Stewart back on a YZ450F by YamaLink


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 replies
Forums
Photo

Chubby dad, looking at bikes , First trip to the orange/black forum ! by Slow_ride


Dirt Bike   Make / Model Specific   KTM   250-530 EXC/MXC/SXC/XC-W/XCR-W (4-Strokes)
  • Hot  28 replies
Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies
 
x

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.