engine rebuild.


1 reply to this topic
  • yz426400

Posted March 29, 2015 - 06:09 PM

#1

So I got water in my oil. I have what I hope is a 98-99 yz400f motor in a yz250f frame (guy told me it was a 426 at the time). It was run MAYBE an hour with the oil mixed. Here's my question, should I replace all the bearings in the case? I have a couple of buddies that are telling me to replace them all. I already have to do a new piston, water pump kit, valves, and a gasket kit. Just wondering how much more I'll have to dump into this bike or if I'm better off just parting it out and buying another used bike.

 

 

 



Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted March 30, 2015 - 06:10 AM

#2

The bearings don't need replacement because water got into the oil, but on that old a bike, they might anyway.  







Related Content

Forums
Photo

YZ450FX OR YZ450F by MESSMAKER


Dirt Bike   Make / Model Specific   Yamaha   YZ 400/426/450
  • Hot  30 replies
Forums
Photo
Supercross

Wilson the Blue Privateer by jetfuel


Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 replies
Forums
Photo

05 yz450f not fast enough by RedeyeYZ


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

2016 YZ450 by CaptainKnobby


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

Snake pit oct 30th by The Anvil


Dirt Bike   Dirt Bike Regional Discussion   California
  • Hot  293 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.