One brake hotter than other side

[cbarr0288]

I just completed a drum to disc swap for my RS. After driving, I noticed one side gets much hotter than the other - the driver's side (rear).

The hot side bearing assembly looks like this:

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As opposed to the other side which looks like this:

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Why? Is it normal? Is it OK?

Secondly - I freshly rebuilt the caliper on that side. Could this be affecting performance making it brake harder on that side and get hotter? I do not feel the car sway in one direction under hard braking.

Thirdly - the caliper pins were harder to push in on that side, and I had to use a clamp to get them in far enough to where I could use the threading to tighten them all the way. Could this pin resistance be causing the caliper not to release then causing more friction and more heat?

What do you guys think it could be?

 

[jtmcinder]

The pins should slide easily, so, yes, that could easily be the problem.

 

[cbarr0288]

The pins should slide easily, so, yes, that could easily be the problem.

OK then. Suggestions on how to clean out the pin holes? Good thing I have more caliper pin lube.

 

[talonalex92]

Small bottle brushes work well to clean the pin holes, and brake parts cleaner. Thats probably why its getting hot, one side is releasing and the other isnt.

 

[cbarr0288]

Thanks guys! good stuff. I will try cleaning these out my next day off.

 

[jtmcinder]

I fought with the tubes on my car for a while and ended up giving up. They should be polished, really. But give it a try with the brushes, first.

You are using a high-temp lube in there, right? That's important.

 

[cbarr0288]

I fought with the tubes on my car for a while and ended up giving up. They should be polished, really. But give it a try with the brushes, first.

You are using a high-temp lube in there, right? That's important.

Synthetic lube designed for the caliper pins. I sure hope it's high temp . This product was recommended to me by the associate at PepBoys.

 

[cbarr0288]

Looks like that one bearing is incorrect (wrong) one is for a ABS system. Would explain why the pins do not line up correctly. Possible you that have mismatched pins. Also if one side is hotter the caliper is not floating, causing the brake not to release. Also make sure you are using the correct lube. Recheck the parts to make sure you the correct parts, for the swap. Should be rather simple to insert the pins.

Are you sure the ABS would cause the pins not to line up? They do go in all the way, and I read somewhere else on tuners the ABS bearing assembly wouldn't make any difference. They are the correct pins. There's no difference from right to left, I bought the calipers & pins set from gofer here on dsmtuners.

 

[jtmcinder]

Looks like that one bearing is incorrect (wrong) one is for a ABS system. Would explain why the pins do not line up correctly.

Utter nonsense. (You're darned lucky I'm in a good mood.) As the thread-started states above, whether the wheel bearing has speed-sensor gizmos has zero to do with the caliper.