Exhaust header tightening


2 replies to this topic
  • slodog

Posted December 14, 2010 - 09:36 AM

#1

What's the best way to tighten the header on a 2009 YZ450F? Neither the bolt nor nut allow enough clearance to tighten with a standard socket and allen socket using a 3/8" drive and torque wrench.:thumbsup:

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

Posted December 14, 2010 - 10:31 AM

#2

I have no idea why you would need to use a torque wrench on the header. I use a 6mm T handle and a 12mm combination wrench to tighten mine. I first snug both fasteners while watching the flange plate to see that it sits flat, square with the face of the port, then I turn down the Allen 1/3-1/2 turn. After that, I crank down the hex nut until the flange squares up with the ring on the header. When using a new OEM gasket, you may need to tighten it a bit more to allow for the additional crush, but in either case, tightening the Allen first stresses the threads in the head less.

  • slodog

Posted December 24, 2010 - 06:55 PM

#3

Thanks, that's what I ended up doing.





Related Content

Forums
Photo

05 yz450f not fast enough by RedeyeYZ


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  38 replies
Forums
Photo

Snake pit oct 30th by The Anvil


Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 replies
Forums
Photo
Supercross

Wilson the Blue Privateer by jetfuel


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 replies
Forums
Photo

James Stewart back on a YZ450F by YamaLink


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  47 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.