Budget '69 Camaro Track Car - NO WHINERS!

[Ron Sutton]

Originally Posted by Vince@MSperfab

The GM outer bearings are just tiny, I remember a thread with forces listed. I cannot find it now. I believe it was when Pozzi was addressing the short spindle failures.


Greg, I remember the thread and Rons listing for brake forces. I think it was Rons thread.

Hey Guys,

A post I did on bearing thrust load capacities is here.


A post showing my new Track-Star hubs & the bearing size differences start on THIS PAGE. Be sure to read from post #427 to post #438.

The size & mass of the bearings define their ability to handle thrust loads ... and heat. A front hub bearing is a lot like a brake rotor. The larger it is the better its mass can handle the heat generated. The smaller it is, the higher the temps get & you get grease burn out.


The photos below show the sizes of bearings for reference.

Far left: Timken LM11949 rated at 917# thrust load. (Most GM 58-78, Ford 55-69 & Chrysler 55-72)
2nd from left: Timken LM12748 or LM12749 rated at 922# thrust load. (GM 82+, Ford 70-89)
3rd from left: Timken LM12649 rated at 1130# thrust load. (GM B-body & 1/2T trucks & Ford some HD apps 63-72)
Far right: Timken 2687 rated at 1800# thrust load. (Road Course & Oval Race Cars)

[Sieg]

Originally Posted by Ron Sutton

Hey Guys, A front hub bearing is a lot like a brake rotor. The larger it is the better its mass can handle the heat generated. The smaller it is, the higher the temps get & you get grease burn out.

Exhibit B:

[SSLance]

Originally Posted by Sieg

Exhibit B:

I saw that in person Saturday night and it was IMPRESSIVE!!!

[GregWeld]

Just the fact that we're having a discussion about bearings -- and temperatures -- and service items...


Makes me wonder how many guys haven't checked this stuff at all - let alone after really pushing their cars hard.


I know for me -- I have a pretty decent shop and tons of time... so it's pretty easy for me to put this stuff up on the hoist and go over stuff. But I know if I had kids at home - and work - and house stuff to attend to - the car might just get parked in the garage and forgotten about until it's time to run again.

[Vince@Meanstreets]

That's why shops like mine exist. : )

I have a few customers that never knew how to check their oil levels.

[Track Junky]

Originally Posted by GregWeld

I know if I had kids at home - and work - and house stuff to attend to - the car might just get parked in the garage and forgotten about until it's time to run again.

Great point Greg. Maintenance is extremely important.
My work day is 12 hours long. I have 3 kids, a wife, and on top of that I'm a landlord which sometimes takes up a day away from my weekends. I enjoy working on my car but realistically I don't have the time to give it the maintenance it needs.

Once again......Thanks Vince.

[intocarss]

Originally Posted by Ron Sutton

Hey Guys,

A post I did on bearing thrust load capacities is here.


A post showing my new Track-Star hubs & the bearing size differences start on THIS PAGE. Be sure to read from post #427 to post #438.

The size & mass of the bearings define their ability to handle thrust loads ... and heat. A front hub bearing is a lot like a brake rotor. The larger it is the better its mass can handle the heat generated. The smaller it is, the higher the temps get & you get grease burn out.


The photos below show the sizes of bearings for reference.

Far left: Timken LM11949 rated at 917# thrust load. (Most GM 58-78, Ford 55-69 & Chrysler 55-72)
2nd from left: Timken LM12748 or LM12749 rated at 922# thrust load. (GM 82+, Ford 70-89)
3rd from left: Timken LM12649 rated at 1130# thrust load. (GM B-body & 1/2T trucks & Ford some HD apps 63-72)
Far right: Timken 2687 rated at 1800# thrust load. (Road Course & Oval Race Cars)

Interesting stuff.. I went and checked my bearings today. It has PN LSB M12649 outter bearings on it

[Flash68]

Originally Posted by Vince@MSperfab

That's why shops like mine exist. : )

I have a few customers that never knew how to check their oil levels.

Have always appreciated your attention to detail and safety Vince.

But why ya gotta talk about me on the internet like that?

Originally Posted by intocarss

Interesting stuff.. I went and checked my bearings today. It has PN LSB M12649 outter bearings on it

Looks like you coulda done a lot worse Jer!

See ya in August.

[Track Junky]

Originally Posted by Flash68

See ya in August.

You holding out Dawg?

[Vince@Meanstreets]

Originally Posted by Flash68

Have always appreciated your attention to detail and safety Vince.

But why ya gotta talk about me on the internet like that?

I teach, they learn....well now you did it, I wasn't mentioning names.

Originally Posted by Track Junky

You holding out Dawg?

Sonoma? hello?