[allenga]

Hello Gentlemen,

Doing a brake job and am replacing bearings and rotors too. The new Timken bearings come with new races. The new Raybestos rotors also have new races.

Do you think I should pound out the races in the new rotors and put the Timken races in so it matches the Timken bearing.

Thank you

Attached. Gratuitous bling photo.

[PontiacJim1959]

Yes, I would. With the way world supplying is today, you could have a race that was made anywhere in the world, but have the same brand name, and be just a hair off in spec and find yourself pulling things apart. With the matched set, you won't need to second guess yourself if you should hear "that noise" coming from the rotor.

[STEELCITYFIREBIRD]

I would use the Timken races.

I also would recommend replacing the brake hose/s you clamped with vice grips!

[allenga]

Originally Posted by STEELCITYFIREBIRD

I would use the Timken races.

I also would recommend replacing the brake hose/s you clamped with vice grips!

Yes, new hoses in the box.

I was not looking forward to changing races. Not sure why all the new rotors have races installed when they don't sell matching bearings.

[77 TRASHCAN]

New rotors obviously have to be accurately machined, also. Hence races in new rotors.
There’s minute things about bearings and races that you can’t see. Always use matching bearings and races!

[STEELCITYFIREBIRD]

🤙🏼
If your not comfortable changing them, your better off using the ones already installed, considering the miles your likely to put on the vehicle.

[allenga]

Originally Posted by STEELCITYFIREBIRD

🤙🏼
If your not comfortable changing them, your better off using the ones already installed, considering the miles your likely to put on the vehicle.

I'm going to do it. Will go rent the tool on Sunday

[STEELCITYFIREBIRD]

https://shop.advanceautoparts.com/p/...E&gclsrc=aw.ds

For the cost a nice tool to own!
🤙🏼🤙🏼

[mgarblik]

Originally Posted by STEELCITYFIREBIRD

🤙🏼
If your not comfortable changing them, your better off using the ones already installed, considering the miles your likely to put on the vehicle.

X2. If your more comfortable changing them and have the tools to remove and replace, then you should do it. Just to be factual, bearing cups, (races) and cones, (the roller part) are not a matched part. They are not lapped together, ground or machined in any way that makes them a {matched set}. That is an old wives tale. There could be a quality difference between the cup in the new rotor and a Timkin cup but who knows. Most of the Timkin bearings are made in China now anyway. A few are still made in the US. Country of origin should be on the box. Now you may have heard you should not mix bearing cups and cones from one side to the other and so forth. That is true, if they are USED. Once put into service, they do lap together and form a unique wear pattern. Either way, you should be fine. I have had several instances of cups turning or spinning in the hubs from being removed and replaced many times. I have never had a wheel bearing failure from a "mismatched" cup and cone in 40+ years of doing this type work.

[allenga]

Originally Posted by mgarblik

X2. If your more comfortable changing them and have the tools to remove and replace, then you should do it. Just to be factual, bearing cups, (races) and cones, (the roller part) are not a matched part. They are not lapped together, ground or machined in any way that makes them a {matched set}. That is an old wives tale. There could be a quality difference between the cup in the new rotor and a Timkin cup but who knows. Most of the Timkin bearings are made in China now anyway. A few are still made in the US. Country of origin should be on the box. Now you may have heard you should not mix bearing cups and cones from one side to the other and so forth. That is true, if they are USED. Once put into service, they do lap together and form a unique wear pattern. Either way, you should be fine. I have had several instances of cups turning or spinning in the hubs from being removed and replaced many times. I have never had a wheel bearing failure from a "mismatched" cup and cone in 40+ years of doing this type work.

Thank you. Are you saying if I slap my new Timken bearing in the new Raybestos rotor that has a new race, they will be fine?

[STEELCITYFIREBIRD]

My opinion yes.

Yet Another Excellent explanation, as usual, Mgarblic!

Shame Timken is sourcing offshore, I have been out of the automotive parts/repair business a long time, use to be a very high quality manufacturer of bearings.

I paid the premium price for wheel ends for my Taurus last year ....thinking I was buying USA made, top grade part.
😔

[geeteeohguy]

I think you'd be ok either way. Provided you have the skill to drive the new races in without damage (race driver or brass punch). NEVER use vice grips to clamp a rubber brake line. Instead, slip an old valve stem or vacuum hose into the banjo fitting to stop the drip. You are probably looking at new hoses at this point.....as the vice grips damage them internally.

[TedRamAirII]

To keep the brake fluid from draining the reservoir, just push the brake pedal down slightly enough that the ports are covered in the MC. Be sure the brake lights are not on! or disconnect the battery. Brake fluid washes off clean with water, if you didnt know. Save that Brake Cleaner for oily stuff!

[allenga]

I meant to clamp off the brake hoses and ruin them.