450f oil pump plate template

4 replies to this topic
  • 88motohead88

Posted October 07, 2014 - 11:34 AM


What does the template look like. Does it look like the 250f kit? From drd. What is the purpose?

  • grayracer513

Posted October 07, 2014 - 02:12 PM


If you mean the wet sump kit, they are essentially identical.  I'll say here and now, flat out, that I wouldn't use the wet sump kit from anyone, ever.  It reduces the oil quantity (yes, I know about the '14-'15), and leaves very little reserve in case of oil loss in long races.  That, and the crankcase was not designed to control the oil around the screen as it would have been if it had been designed as a wet sump in the first place.


But it's the same idea: remove the return pump and replace the feed pump back plate with one that routes oil to the pump from the sump screen instead of the tank.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • 88motohead88

Posted October 07, 2014 - 04:04 PM


So is the only reason to take out the return pump and add the special plate to eliminate the oil being rerouted to the tank? Why take the return pump out. I'm just trying to understand the process

  • grayracer513

Posted October 08, 2014 - 06:14 AM


The original idea was to reduce weight AND to lower the weight on the bike by moving the 1.5 down from the frame tank and putting it in the crankcase.  The resulting oil system is not better than the original dry sump setup in any way other than the relocation of the weight, small as that is.

  • Geoffit

Posted October 08, 2014 - 06:14 AM


On the steel frame bikes ( and maybe the 06-13 250s) the idea of moving and reducing weight seemed like a good idea to some people. in addition removing the return side of the oil pump could free up a little power. One of the reasons yamahas have the longevity they do is because of the dry sump system. The remote tank helps to cool the oil which makes all the parts inside happy.

Related Content


Should I buy this bike? help....... by Numsa Hul

Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • * * * * *
  • 10 replies

Is it worth it? (Cam and High compression piston) by macgi77

Dirt Bike   Make / Model Specific   Honda   CRF 150/230 F/L
  • Hot  36 replies

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

05 yz450f not fast enough by RedeyeYZ

Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  38 replies

Snake pit oct 30th by The Anvil

Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 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.