ls1121

I just ordered a set of Zinc Plated Rotors and Ceramic Pads from Brakemotive for my 08 Z51. My OEM rotors have that Custom Rust line around the Center of the Rotor. For those who know.....should I paint the center now or will the Zinc plating keep the rust away?

HOXXOH

The zinc eventually will corrode to form a dull chalky appearance about the time the rest of the car falls apart. (aka a long time) A type III clear chromate finish will retard that corrosion and most likely was part of the process specified. In the meantime, you'll have no rust on any covered area. The zinc is much softer than the cast iron, so it'll go away quickly in the pad contact area. Normal thickness is .0003-.0005". I'd suggest using your old pads initially to wear off the first bit and avoid contaminating the new pads. It won't take many stops to do that. If you bevel the edges of the old pads first, it'll assure the zinc removed is smaller than the new pad swept area.

You'll gonna like it.

ls1121

cool.... I was hoping that was how it is. I can't wait till they get here. I got a Great deal.

timd38

One track day on them and the rust just like every other rotor. If you want good looking centers get two piece rotors. Heat kills the coating and then they rust.

Just my experience.

HOXXOH

I doubt he's tracking the car with those ceramic pads he bought.

ls1121

LOL no my track is I-85. I might go to a charity event maybe.

I'm just tired of looking at rust on my Beautiful Corvette. It's kinda like looking out a window at a Beautiful landscape with sunshine, flowers and a field of green grass with a pile of cow **** right in the middle of the picture.

ls1121

For how I drive my Corvette those two piece Rotors would be a huge waste of good money, but thanx for the heads up.

HBsurfer

Very interested in what you get. I just received my rotor from brake motive last week. The front and rear rotors have two different sized holes. Not even close. Looks terrible and they agree that they don't look right but that is the way they are made now. I will not put them on my car. Front holes are 1/2 the size as the rear. They said they checked their warehouse and all Z51 rotors are like mine. Please let me know what you get when they arrive. My are just sitting here waiting for an answer on how to return a 100# package for a full refund.

ls1121

If it were me I would send them pictures of your rotors and of what they sent you to show them they sent the wrong part and have them pay the return shipping.

can you post up some pictures here also?

victorf

I took the precaution of painting before use.

Although surrounded with salt air 24/7 in the middle of the Pacific. Other then the brake wear path gets rusted when wet, no problem with the rest of the F/R DBA rotors.

I don't race but do like my front two piece DBAs in all respects:



Aloha!

HBsurfer

They have already viewed the photos and have actually admitted that "something is not right". They have gone through their entire stock of Z51 rotors and claim that they are all like this. The fronts are the rotors with the small holes. They are the right part but the holes do not match front to rear. They claim they will give me a refund if we cannot fix the problem but so far, seven days in, four phone calls, three "I will call you early tomorrow's" that never happened and two unanswered e mails and I am still waiting. The person I talk to is very nice and understanding when I call her. She does not respond to e mails and has not called back in the three time she has said she would call me. They think there was a machining error and she said she was waiting for instructions from her Tech guy. I will be on the phone again on Monday.

HOXXOH

Really??

You wouldn't think putting both rotors on the "Front Driver Side" would cause so much of a problem.

timd38

I would paint them like victorf recommended. That coating isn't as good as the hype.

jbondfl

Just curious,,, if you're going to paint them why did you bother with zinc plated? You can paint a steel rotor just the same, for less money, and the paint will last just as long....

timd38

Exactly!

HBsurfer

The rotor on the right is a rear rotor. They put the wrong stickers on them (so they say). Both front and rear rotors are the right size for the Z51. The only problem is the hole sizes, but that is enough for me to not use them. Powder coated calipers and five spoke wheels make the area pretty exposed and what they sent me is not acceptable. Function should be fine but I am not using them this way. Really curious what the OP gets. If they are telling me the truth, he should get exactly what I show in the photos. They claim they are all exactly like mine.

HOXXOH

I was kidding about the stickers both marked the same.

I'm guessing the guy that did the drilling couldn't tell the difference between a 5/32 drill bit and a 5/16.
Just get a quote from a local machine shop to get the fronts opened up to match the rears. Then double the amount (for your hassle) and offer that as an acceptable settlement.

5knives

I know we all have things we are OCD about but let me offer another opinion.

Perhaps the hole size is an issue to you because you're comparing the rotors right next to each other. Once they're behind the wheels and calipers and 10 feet apart, I doubt anyone would even notice or care. But I realize that's no consolation if they're really bothering you. If you can get them replaced/refunded, go for it.

HBsurfer

I have gone back and forth a couple of times about just installing them. Nobody would notice but me but I know it will bother me. Never thought about having a machine shop enlarge the holes. That is another option. I will be calling Brakemotive again tomorrow and am still curious what the OP gets in the mail this week.

ls1121

yea me too lol.

my question would be...... are the holes drilled first then they are coated?