Author Topic: Reproduction 2 piece rotor review  (Read 3288 times)

Mike S

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Reproduction 2 piece rotor review
« on: May 12, 2017, 01:11:10 PM »
Hello All,

   Because my original 2-piece rotors were well below the min thickness rating that certainly would not pass NY safety inspection (even historic cars have to get at least a safety inspection in NY), I purchased a set of reproduction 2-piece rotors. You can get these at places like Jegs and get free shipping and save close to $60 vs. eBay. The mfg part number is BR69C.
   For a reproduction these are very accurate especially in the hub shape areas. The only differences I see are the bolts that hold the hub to the rotor are metric 10.8 vs. the SAE grade 8, and the shape of the inner vanes. And of course the rim bolts are SAE threaded. The hub opening area where the rim center fits over is perfect and no slop. The thickness of the new rotors is 1" and the diameter is the same. I thought of swapping the hub between the two because of the type of iron(ductile) the original hubs are made from but decided to stay with the new ones even though they are gray iron. The rotor is gray iron which is the same as the original one and gray iron is pretty much what all modern rotors/hubs are made from today. The new rotors come with the inner bearing surfaces installed. The only thing I need to do is duplicate the green stripe on the hub.
  Anyhow, I wanted to share my experience of these with you in case you are in a position whereby you have to buy replacements. I kept the originals in case one day just the rotors become available.

Mike
67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Under restoration

Mike S

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Re: Reproduction 2 piece rotor review
« Reply #1 on: May 12, 2017, 01:12:02 PM »
 Picture of rotor mounted
67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Under restoration

BULLITT65

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Re: Reproduction 2 piece rotor review
« Reply #2 on: May 12, 2017, 04:29:50 PM »
That looks like a quality piece.

 Thanks for the write up Mike. :)
1969 garnet red Z/28 46k mile unrestored X77
-Looking for 3192477 (front) spiral shocks 3192851 (rear)
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KurtS

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Re: Reproduction 2 piece rotor review
« Reply #3 on: May 12, 2017, 11:40:41 PM »
And the heads of the studs are different shaped.
The rotors look good! Thanks!
Kurt S
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x66 714

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Re: Reproduction 2 piece rotor review
« Reply #4 on: May 13, 2017, 01:44:26 AM »
The rotor only used to be available but no longer. Might've been a liability issue....Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

ZLP955

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Tim - 04A VN '69 z/28 69-69 715 ex-E/MP

bergy

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Re: Reproduction 2 piece rotor review
« Reply #6 on: May 13, 2017, 12:26:41 PM »
wheel hubs are ductile iron today

x66 714

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Re: Reproduction 2 piece rotor review
« Reply #7 on: May 13, 2017, 12:40:58 PM »
Just ordered 2 rotor only from Camaro Central, We'll see what happens. The last time I talked to them, they said rotor only was discontinued...Thank you, Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

Mike S

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Re: Reproduction 2 piece rotor review
« Reply #8 on: May 13, 2017, 02:03:05 PM »
Just ordered 2 rotor only from Camaro Central, We'll see what happens. The last time I talked to them, they said rotor only was discontinued...Thank you, Joe
  Let us know if the order comes in. I called them a couple of months ago and they told me they were no longer available. I suggested to them at that time to update their web site.

Mike
67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Under restoration

68Zproject

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Re: Reproduction 2 piece rotor review
« Reply #9 on: May 13, 2017, 05:07:13 PM »
I kept the originals in case one day just the rotors become available.

Mike

I think you should just send them to me for safe keeping.  We have no safety inspections where I live and I can run the rotors below minimum.  Just kidding.  Something else I need to look for.  :'(
68Z28

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Re: Reproduction 2 piece rotor review
« Reply #10 on: May 13, 2017, 06:32:43 PM »
In case they tell me no go, does anybody know the difference between the 139.00 rotors & their 225.00 rotors other than the price & one is off shore? I have several good hubs & wouldn't mind putting them back on the cars they came from....Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

Mike S

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Re: Reproduction 2 piece rotor review
« Reply #11 on: May 13, 2017, 06:48:53 PM »
I called Firebird Central (same company as Camaro Central )and they said those rotors are not available.
As for the difference in price between the $120 $225 2-piece (I assume you are looking at HBC), the hub is supposed to be ductile iron and the rotor is gray iron and made in the USA whereby the $120 unit is gray iron for hub, rotor and is imported. I wonder now if the reproductions, imported or not, still have to meet US requirements from DOT, NHTSA or whomever.

Mike
67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Under restoration

x66 714

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Re: Reproduction 2 piece rotor review
« Reply #12 on: May 13, 2017, 10:08:28 PM »
Those prices actually came from Camaro Central....Joe
See America's First, Chevrolet

1968 Z/28 Corvette Bronze. Black Hounds Tooth. 02E Los Angeles born 3/13/1968 pnt OO. Purchased March 1976
1969 SS396 Yellow/Yellow 08E Norwood born 8/28/1969 pnt 76E. Purchased April 1981

bergy

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Re: Reproduction 2 piece rotor review
« Reply #13 on: May 14, 2017, 10:20:13 AM »
The hubs have to meet MVSS (motor vehicle safety standards).  I doubt if the re-pops have ever gone back through MVSS as cast iron material.  We did a test at the proving grounds using Ford hubs made with cast iron that were designed for ductile back in the 80s - they failed under load at the road course.

Mike S

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Re: Reproduction 2 piece rotor review
« Reply #14 on: May 14, 2017, 01:23:08 PM »
 But what kind of cast iron? I've been reading up on it and see there are different types and see gray and ductile iron being commonly used today on items such as spindle hubs. I'm sure the usage depends in part on the type of vehicle used and expected usage.
67 LOS SS/RS L35 Hardtop - Original w/UOIT
67 NOR SS/RS L35 Convertible - Under restoration