yz450f carb boring or 13.5.1 je piston?



2 replies to this topic
  • Blackyz450

Posted June 23, 2014 - 05:46 PM

#1

2006 yz450f would you bore the carb or put in a 13.5.1 piston.. right not it has ported head and 12.8 je piston and stage 1 hot cams and it is drag raced and I run 110 fuel because we have to at the track

 



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

Posted June 23, 2014 - 06:08 PM

#2

A higher compression piston usually gives you more bottom end power. It can also make you lose top end too.

  • grayracer513

Posted June 24, 2014 - 06:13 AM

#3

Bore the carb.  Alternatively, you can fit the carb from a CRF450R.  They're 41mm vs. 39 on the YZ.







Related Content

Forums
Photo

First Hare scramble tips by dhend8


Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  33 replies
Reviews

Yamaha YZ450F 2017 by Chris.GVS


Yamaha YZ450F 2017
  • - - - - -
  • 0 reviews
Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 replies
Forums
Photo

2016 YZ450 by CaptainKnobby


Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies
Forums
Photo
Motocross

Thinking about Yamaha 250... by Arctic Pride


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 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.