Radiation water Circulation direction??

2 replies to this topic
  • antiloop98

Posted December 12, 2010 - 05:52 AM


Does anyone know which direction the water flows thru the engine and radiators? I need to cover the radiator thats is the coolest,
(driving in -10 Celcius snow conditions)
bike: yamaha yzf 450, 2009.

kennet from sweden

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

Posted December 12, 2010 - 07:58 AM


the outlet from the engine (the hottest point) is on the front of the head and that hose flows to the left radiator top. The inlet to the engine is from both radiators at the bottom. I think the best way to keep the temp up would be to cover the top 1/3 or maybe even 1/2 of both radiators. A cleaner way would be to make some restrictors and fit them in the hoses. trying to find the best solution without a temp gauge is a problem.

  • lumpy790

Posted December 12, 2010 - 08:11 AM


When we rode (2 strokes) in really cold freezing conditions we duct taped over both luvers. I would start there and ride it a little and see if it gets really hot. If it does remove 1 row of the duct tape until you find the.....just right temp.

Related Content


Yamaha YZ450F 2017 by Chris.GVS

Yamaha YZ450F 2017
  • - - - - -
  • 0 reviews

YZ450F 03 Sparks driving me crazy by SirAttard

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • 5 replies

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

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

The "going back to the other darkside" adventure... by Monk

Dirt Bike   Make / Model Specific   KTM   250/350/450/505 SX-F & XC-F (4-Strokes)
  • Hot  94 replies

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

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.