Rotors
Thread Starter
Instructor
Joined: Feb 2006
Posts: 144
Likes: 0
From: Woodlands TX
Rotors
Someone answer this. I have a 96 Coupe and I am about to take the rotors to the parts house to get them turned. Everytime I have done so with any vehicle they usual advise that one or more them are outside specs and need to be replaced. I have been checking online and it appears that the right front rotor is more expensive than the left - usually about $25 bucks. Just looking at them on the vehicle they look the same. Can I get away with buying two of the cheaper left side rotors?
Race Director
Joined: Jun 2004
Posts: 13,969
Likes: 710
From: WI
Napa lists the same cost side to side. $45.
http://napaonline.com/masterpages/NO...d=3&SubCatId=4
I would not buy from a place charging more for one side, it seems a greedy way to make them more money. As far as I know your rotors are not directional so yes you could buy two of the same side.
http://napaonline.com/masterpages/NO...d=3&SubCatId=4
I would not buy from a place charging more for one side, it seems a greedy way to make them more money. As far as I know your rotors are not directional so yes you could buy two of the same side.
Race Director
Joined: Dec 2006
Posts: 10,383
Likes: 4
This site,
https://www.superchevyperformance.co...les.asp?ID=123
shows two part numbers for front rotors.
The descriptions are both "C4 LH Rotor". Um both are LH?
But the prices are different. And their price is a few dollars over the list price, quoted on the same site.
Can there really be a difference between one vendor's solid one piece rotors and another vendor's?
I fully understand how, when it comes to two piece, there can be a huge difference.
Go for the NAPA parts listed above, I say!
Oh I always wanted to know but never asked...
Can someone explain resufacing vs turning?
https://www.superchevyperformance.co...les.asp?ID=123
shows two part numbers for front rotors.
The descriptions are both "C4 LH Rotor". Um both are LH?
But the prices are different. And their price is a few dollars over the list price, quoted on the same site.
Can there really be a difference between one vendor's solid one piece rotors and another vendor's?
I fully understand how, when it comes to two piece, there can be a huge difference.
Go for the NAPA parts listed above, I say!
Oh I always wanted to know but never asked...
Can someone explain resufacing vs turning?
Instructor
Joined: Oct 2006
Posts: 123
Likes: 0
From: Somers New York
While we're on the subject of rotors....I bought slotted rotors...is there a specific rotation for them? In other words should the slot be angled towards the front as in: \ or the angled towards the rear as in: /
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
I would get them turned at Pep Boys for $8 each.
Difference between vendors rotors can be night and day. Some of them get em from Brembo, some of them get them from China. Funny part is, usually both ends of the spectrum will say "Brembo" on them.
Difference between vendors rotors can be night and day. Some of them get em from Brembo, some of them get them from China. Funny part is, usually both ends of the spectrum will say "Brembo" on them.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
front of car --->
\
O
\
Race Director
Joined: Jun 1999
Posts: 14,924
Likes: 9
From: Merritt Ils Fl
I am a firm believer in turning rotors if they are not worn too much. Make sure the turner knows what he is dong. Rotors should have a band around them to prevent chatter while being cut. No band can result in a wavey surface. You won't feel it ,like a warped rotor, but the pad will not lay flush on the rotor face.
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Race Director
Joined: Jun 2004
Posts: 13,969
Likes: 710
From: WI
Here is a picture of the C5 rotor, with curved internal cooling vanes. These do have to be on their specific side unlike your stock rotors with straight vanes. The slot direction doesn't really matter.
Edit, you can buy a micrometer for the extra money you are spending. They are cheap and then you can check the rotors thickness to see if it really is out of spec. The min. thickness is put into the rotor on the back of the ones I have. Also you can check run out.
Edit, you can buy a micrometer for the extra money you are spending. They are cheap and then you can check the rotors thickness to see if it really is out of spec. The min. thickness is put into the rotor on the back of the ones I have. Also you can check run out.
Team Owner
Joined: May 2002
Posts: 24,337
Likes: 25
From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
Unless you have a C6, then you should put the vanes backwards on one side.
Thread Starter
Instructor
Joined: Feb 2006
Posts: 144
Likes: 0
From: Woodlands TX
They have to come off any way so I gonna try to get them turned. If they tell me they are out of spec I am gonna order from Napa and have them shipped. I don't drive it daily so I can wait on them.
Race Director
Joined: Dec 2006
Posts: 10,383
Likes: 4
Does NAPA charge shipping if you simply order an item for in-store pickup?
<edit>
From post#15
Aye.
I should have phrased it to make it more of a question and a suggestion.</edit>
<edit>
From post#15
Not for in store pickup but it sounded like he ment shipped to his house.
I should have phrased it to make it more of a question and a suggestion.</edit>
Last edited by 94z07fx3; Jul 17, 2007 at 03:10 PM.
Burning Brakes
Joined: Oct 2006
Posts: 794
Likes: 2
From: Allentown Pa.
Lasr fall I put new rotors and pads on my 90 coupe. The rotors cost 40 bucks apiece plus shipping from one of the aftermarket guys on line. The pads were also cheap. The rotors had the correct ground finish and were within .0005 on overall thickness and overall runout checked with a mike and a dial indicator. Also brake pulsing at the pedal can be caused by a bad wheel bearing as I found out later. I then put all new wheel hub and bearing assy. on the car. I have had bad results with turning down rotors in my lifetime. These are your brakes you are talking about, put on new rotors. Just my .02. Allentown Ernie.
Burning Brakes
Joined: Dec 2005
Posts: 805
Likes: 11
From: Hickory Flat Ga
I agree get new rotors for a few more bucks. There's no price difference between left and right.
The front stock J55 rotors have directional vanes that curve backwards for cooling. The rear internal vanes are perpendicular to the center, no curvature.
The front stock J55 rotors have directional vanes that curve backwards for cooling. The rear internal vanes are perpendicular to the center, no curvature.
Last edited by tlong; Jul 17, 2007 at 05:14 PM.