Hot Cams with 13.5:1 piston


6 replies to this topic
  • Chazlom

Posted August 26, 2005 - 10:22 AM

#1

Are there any know issues with running the 13.5:1 pistion with the hot cams. I don't want an issue with the valves hitting the piston.

Thanks,

My Garage

  • 642MX

Posted August 26, 2005 - 03:52 PM

#2

I run both and have had no problems. I think its a good combo. The Wiseco pistons are a little louder than stock (piston slap) and it does take a harder kick to fire it up, but its worth it.

  • Chazlom

Posted August 27, 2005 - 12:54 AM

#3

Thanks :D
I currently run Wiseco +2mm overbore 12.5:1, for almost two years now. I'm going to go through the top end again and wanted to try the 13.5:1.
Thanks for your feedback.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • sk8ter_kickflip

Posted August 27, 2005 - 12:58 AM

#4

nice bike!!!!!!

  • Birdie426

Posted August 27, 2005 - 01:24 PM

#5

642MX-
Do you run race gas with that piston...or does 92-94 octane premium cut it without pinging?

  • 642MX

Posted August 27, 2005 - 03:07 PM

#6

642MX-
Do you run race gas with that piston...or does 92-94 octane premium cut it without pinging?



I've heard of guys running pump fuel with this set up, but I run race fuel. I use Citgo's 110 leaded fuel, I used it when the bike was stock also. It seems just a little more crisp with the leaded fuel.

  • 642MX

Posted August 27, 2005 - 03:10 PM

#7

Thanks :D
I currently run Wiseco +2mm overbore 12.5:1, for almost two years now. I'm going to go through the top end again and wanted to try the 13.5:1.
Thanks for your feedback.



No problem, let me know how you like it. :D





Related Content

Forums
Photo

2016 YZ450 by CaptainKnobby


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

100 hrs on 2014 yz450f, shim valves or replace them? by ttr230rider6


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  79 replies
Forums
Photo
Motocross

Thinking about Yamaha 250... by Arctic Pride


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  491 replies
Forums
Photo

Snake pit oct 30th by The Anvil


Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 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
 
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.