I can't seem to get it right. I've got the brakes on, and they physically work.

However, they make a lot of noise. After taking them apart several times, I finally noticed that the rotor goes through the carrier like this "/" though not quite that severe.

Its definitely closer on the inside top, than it is at the outside. Its noticeable visually, and I can verify it with a feeler guage. Something like .035 - .040 difference.

Now the bottom of the carrier bracket seems even. Feeler guage verifies that. Something like .010 or so off.....

I have spare ls1 carrier brackets handy, and they all fit the same way, so I don't think its a bent carrier bracket.

I have a spare set of adapter brackets, so I swapped those out with no change in the rotor/caliper alignment.

For fun, I swapped out the rotors, since I have 3 different sets laying around. Only way it changed, was if the rotor was just thinner. Still goes through at an angle.

Orrrrr

Is this just me being overly picky and its just a visual trick???? Meaning the rotor is just fine, and its how the carrier bracket is curved or something?

Any help is appreciated

-jason

 

Ok, a little more info

Using a slide ruler, I measured the distance between the rotor and adapter bracket.

At the bottom, where the lower carrier bolt passes through, it is 16mm from the rotor

At the top, where the upper carrier bolt passes through, it is 15 mm away.

So its not just a visual thing, there is an actually difference......

so do I need to try and grind a little material off of the spindle to compensate? Its the only thing I can see as the variable in all of this. The rotor is new, and the adapter brackets seems straight.

Just need some ideas..... *sigh*

-jason

 

Ok, so I spent some quality time with my grinder and got the rotors pretty well centered, and running straight through the carrier. Just had to grind on the spindle a little bit. Perhaps there was some flashing or the like causing the bracket to tilt after drilling and tapping the holes......

I'll know if the noise goes away once I finish up the rear brake swap..... *joy*

-jason

 

Are the front LS1 brakes larger then the rear? Because I got the stock 15in rims and from what ive heard they barely clear, I would check and see, but my friend has a key on his rims, so I cant check yet.

 

I'm not fully understanding what problem you are having with the alignment of the rotors. Is it that the LS1 rotors are not sitting flush with the 3rd gen hubs?

 

late reply I know

the rotor was not centered in the caliper carrier bracket, thereby rubbing on the inside of the bracket.

the rotor was rubbing on a metal bracket. This is bad, leaving metal shavings in the rim, lots of noise, etc.

I had to grind down the spindles to center the bracket over the rotor. I tried two different adapter brackets, and 3 different rotors before doing this.

In the end, it was an easy fix. Reading through a lot of posts, I found there were two different style spindles made. I had the set that caused interference problems.

Hopefully that is a better explanation

-jason

 

SOUNDS LIKE THE MOUNTING SURFACE FO RTHE ADAPTOR PLATE WAS NOT FLUSH/FLAT ON THE SPINDLE.THAT WOULD THROW THE ALIGNMENT OF THE ROTOR AND CALIPER OFF. ALSO YOU SURE THE SPINDLE WASNT BENT?THE ROTOR WOULD STILL SPIN BUT ON AN ANGLE?YOU SURE YOU DIDNT COMPENSATE THE CALIPER TO MATE WITH A BENT SPINDLE?