I was working on my Raptor over the weekend and took apart the axle and bearing carrier. The bearings were pretty dirty but I cleaned them up and they are fine. I was wondering, what do you do when they wear out? How the heck can you get them out of there and put new ones in? If anyone has any information, please let me know. I also installed the Dynojet kit this weekend. 142, 144 mains and DJ needles with snorkle flaps cut out. It runs like a scalded dog now! I called Dynojet to see if I could get more HP with more airbox holes and bigger jets but they said the best results they've seen is with the setup they recommend. Anybody else have a different result? I still have the stock exhaust and a Pro Design filter kit with a full exhaust on the wish list. Thanks.

 

You can tell when they are worn out by pulling/pushing your rear axle forward/backward. If there is alot of slop, you need new bearings. As for how to get them out, there is a tool to do this (bearing puller). If you're really skilled you can do it with a hammer and screwdriver. As for putting them in - some grease and a rubber mallet works good.

 

Sounds like we have another "Dynojet believer". If Dynojet says don't mess with it, that's probably your best bet. I have the same setup as you with the addition of the ProDesign/K&N setup and it runs great. As it sits now, the exhaust is the holdup, not getting more air in. Amazing what a $50 jet/needle/spring kit can do for you.

 

Thanks for the info guys. Yes the Dynojet is the way to go for me. I was up until 4am changing the jets and I am glad I don't have to get in there again to do it! Then again, I did start at 2am like an idiot! Anyway, I'm real happy with it.

Iceman, thanks for the tip on the bearings. I figured a bearing puller would work if they were actually removable, but I didn't know if you could get them out for sure. I didn't want to screw anything up without asking someone who did it first. I used to race BMX bikes and changed out a lot of bottom bracket crank bearings so I got pretty good with a screwdriver and hammer as a kid. I think I'll use the bearing puller method this time though. Later guys.