Question!!!!!!


3 replies to this topic
  • drichardson42

Posted December 04, 2006 - 02:35 PM

#1

ok, i have a honda 400ex 4 wheeler, i bought it from a guy that put a yz400 motor in it.. he says he put a 426 sleeve in it then put a 444 big bore kit.. the bike is hard to get started. he told me to put a yz450f decompression cam in it, and it would help... is thisa true? would it run better/worse? what do you reccomend doing? any performance add ons to get easy cheap power?
Thanks
Dustin

  • mxchamps

Posted December 04, 2006 - 02:39 PM

#2

wow. That sounds bastardized. The older YZ400's were tough to start in the first place. I would start by checking your valves for proper clearence. When mine got off it wouldn't start unless I pull started it. The cam will make it easier to kick, but you might have other problems.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • 642MX

Posted December 04, 2006 - 07:29 PM

#3

I hate it when people call there quads a "bike." :worthy:


Yes, a 450 cam will probably help you. There is a huge thread at the top of this forum that has all the answers to your questions.

  • Shawn_Mc

Posted December 05, 2006 - 02:45 PM

#4

The cam will help with starting,but mostly what will help will be getting the carb right.

Keep an eye on the counterbalancer cam drive keyway. They liked to eat the keystock. The OEM key is a tad too short to begin with also. Just an FYI.





Related Content

Forums
Photo

Michigan Motocross Tires by 288yz450


Dirt Bike   Dirt Bike Regional Discussion   North
  • 1 reply
Forums
Photo

2016 YZ450 by CaptainKnobby


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

Megabomb Fitment by 288yz450


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 1 reply
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
Wiki
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info


Articles
  • 0 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.