Wrong Direction Brake Rotors (unless going backwards)

Rwillia4 · #1 (**permalink**) 10-05-2009, 10:50 PM

I'm at the car show in Virginia Beach, VA it is similar to the SEMA show in vegas just ~150 cars, and 3 vendors TOTAL. ...I guess I need to drive to other areas...

So I'm looking at some of these one-off full resto's with no bug's splattered on them, custom floor lights and mirrors on the floor to show that it has never been through any dirt and the closest it got to a water puddle was the mark left behind from a water bottle when the guy that was paid to detail the car took a sip. ...I regress...

On at least 4 different vehicles the rotors, which were easy to see with the +20" rims, were on the wrong side. The air was being pulled from the outside to the inside. Realize there was only ~10 vehicles that had vented cross drilled rotors. To me this is a large percent of error. Which leads me to a question: Has anyone ever seen a vented rotor that was designed to pull air from the outer rim to the hub side?

Jamo · #2 (**permalink**) 10-06-2009, 12:35 AM

Some production cars use one-sided cross-drilled rotors instead of mirror-image ones...the Z-51 C6 Vette being the most often mentioned during the past several years.

GM's response to the question: It's cheaper to make one side fits all, and it really doesn't affect performance.

Excaliber · #3 (**permalink**) 10-06-2009, 03:44 AM

In keeping with that GM trend, their 600 horse, dry sump ZO6 motor has only ONE part number for the heads. They fit either side of the block!

Ronbo · #4 (**permalink**) 10-06-2009, 04:05 PM

Quote:

Originally Posted by Excaliber

In keeping with that GM trend, their 600 horse, dry sump ZO6 motor has only ONE part number for the heads. They fit either side of the block!

Like almost every other V8...

Haven't ever heard of any car experiencing brake fade on only one side so I'd guess GM's stance is correct.