Piston size question?



2 replies to this topic
  • Garysyz400

Posted December 11, 2001 - 08:04 PM

#1

Are there any problems using a 13.5 to 1 piston versus a stock 12.5 to 1 piston. Such as valve clearance, heat, etc.?? When I ordered a top end today I was given the option and chose the 13.5, but am concerned if I made a bad choice. Any help would be greatly appreciated.
Gar

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

Posted December 12, 2001 - 08:42 AM

#2

Measure the old with the new and you'll most likely find that the clearance will be the same.

And piston manufactures usually don't build pistons that people can't use with stock cams.

As for heat, yes. More of it, but you should be fine.

I would be more concerned about octane values.

And what sort of cylinder prep work did you have in mind? Is this a standard size piston, or is it over?

DaveJ

  • Looped_Out

Posted December 12, 2001 - 05:18 PM

#3

Don't go with Wiseco.





Related Content

Forums
Photo

Megabomb Fitment by 288yz450


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

Yamaha YZ450F 2017 by Chris.GVS


Yamaha YZ450F 2017
  • * * * * *
  • 1 review
  • Last review by Tommyk_55
  • On January 15, 2017
Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 replies
Forums
Photo

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F


Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies
Forums
Photo

Michigan Motocross Tires by 288yz450


Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply
 
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.