99 steeering stem bearing kits???
Posted March 19, 2003 - 04:55 PM
Anyone else have this experience?
Posted March 20, 2003 - 11:07 AM
Posted March 20, 2003 - 01:58 PM
Then, I often wonder what "grade" bearings you get from the bearing house or after market supplier. Yamaha, for example, purchases and sells tens of thousands of these bearings from the manufacture. I'm sure they get a great price. When I see the time (which is rare) that the bearing house close to Yamaha and has a precise replacement and the price is less than Yamaha, it makes me wonder what quality of product I'm getting and why they can sell it for less.
Posted March 20, 2003 - 03:53 PM
Yamaha or any other MC manufacturer didn't design thier own bearings, the engineers selected them from a catalog. Look for any numbers present on the race (or seal if applicable)and start with that number when sourcing.
Of course, your time is valuable, too. Sometimes it's worth the extra cost to just go to the counter and pay the man for the Yamaha parts.
Maybe we should start a database with bearing cross references. That would save us TT'ers lots of cash.
Posted March 20, 2003 - 06:55 PM
But you are correct, one almost has to be an engineer or very sharp counter person at the bearing house to discern the correct part for the application.
For example, the bottom bearing on a newer YZ/WR has a special seal on the bottom bearing. When they were on a "backorder" status with Yamaha, I tried many sources (bearing suppliers) to obtain them for my customers. After searching 8 different suppliers, none had the precise bearing necessary available to sell or special order. The difference between the readily available bearing from the bearing house and the one Yamaha supplies is the special seal, that I’m told is only available from Yamaha, due to the special order specification Yamaha provided Koyo.
It’s difficult at this moment, but someone out there might want to call a bearing house and give us a retail price on Koyo bearing part number: 320/28JR. Then we could compare the Yamaha retail price of $ 26.78 and the price the bearing house give you. And remember, make sure the bearing they quote has the special seal attached to it. I’d be very interested in an honest answer to this.