Author Topic: Split rotors  (Read 9359 times)

Bjv69ss

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Split rotors
« on: July 11, 2007, 11:27:33 PM »
I tried to buy front rotors for my 69 SS from a brake warehouse in our area.  My car has bolt on to the hub type rotors.  They only list a one piece rotor and I noticed that Ricks only has the one piece rotor too.  Is this all that's available today? and will the one piece rotors work as original to the car? I thought I'd ask if anyone has had this issue and what you did to fix it.
Thanks
1969 Fathom Green
SS 350 Coupe 
71 Impala Sport Coupe

Jonesy

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Re: Split rotors
« Reply #1 on: July 12, 2007, 12:38:34 AM »
Two piece are the factory original. The one piece is all that is sold now. Unless you find some decent used ones on ebay or swap meet.
I havent used any one piece rotors, but I know many others who have.
1967 RS-Z/28 Nantucket Blue the D-2 car

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Jerry@CHP

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Re: Split rotors
« Reply #2 on: July 12, 2007, 01:21:53 AM »
If you're doing a correct restoration then you'll need the two piece rotors but if the car's a driver, just install what's available.  The orignals are bringing big $$ now because anyone doing a correct restoratoin wants them,

Jerry

KevinK

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Re: Split rotors
« Reply #3 on: July 12, 2007, 01:26:42 AM »
...as Jerry said, ...if it's a driver, you could easily go with the one piece rotors.
 Since you mentioned your car is a '69, it may not be an issue, ...but if you use 1 piece rotors on a '67/'68 (ie. two piston calipers) you may need to turn the center hub area to clear the caliper. Again, ...may not be an issue on '69 (single piston caliper), ...but just thought to mention.

Bjv69ss

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Re: Split rotors
« Reply #4 on: July 12, 2007, 10:15:08 AM »
It will be a driver.  Thanks for the info!!!
1969 Fathom Green
SS 350 Coupe 
71 Impala Sport Coupe

Flowjoe

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Re: Split rotors
« Reply #5 on: July 12, 2007, 02:46:37 PM »
I have several sets of the two piece rotors (all from '69s)...several have good hubs with questionable rotors (too thin or warped)...is there any way to deal with the "bad" rotors so as to reuse the good hubs?  Other than the above mentioned "good used" method, that is.

Bjv69ss

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Re: Split rotors
« Reply #6 on: July 13, 2007, 12:05:39 AM »
Someone will correct me if I'm wrong but I'd say, with a cost involved, you might find a machine shop that could weld metal to the existing rotor and machine it to the correct thickness so you could reuse the original rotors.  I know they do it to crank shafts on heavy equipment.  Just a thought...
1969 Fathom Green
SS 350 Coupe 
71 Impala Sport Coupe

420GOAT

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Re: Split rotors
« Reply #7 on: July 13, 2007, 04:20:13 PM »
i once replaced my two piece for a single piece rotor and i had the issue of clearance between the caliper and the new rotor hub area...and also the rally wheel did not clear the caliper either. i was using four piston calipers by the way....i was young and i filed away material on the caliper to clear it......sorry it was my only car and i needed to get going. :'(
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67camarorsss

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Re: Split rotors
« Reply #8 on: July 17, 2007, 11:02:31 PM »
I used 1 piece rotors on my 67 which has the original 4 piston calipers. I'd have to look but I think I got them from Vette brakes in Florida when I had them rebuild and resleeve the calipers. This was about 10 years ago. I had no clearance issues at all.
- 1967 RS/SS 396/TH400 (loaded clone restification)
- 1998 Z28 LS1/M6 (daily driver)
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Bjv69ss

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Re: Split rotors
« Reply #9 on: July 23, 2007, 09:45:15 PM »
Before I bought the present day replacement rotors I thought I'd see if I could get the split rotors that i have turned.  They look to have enough metal left.  They do have some deep rust pits though.  Any one know what the minimum thikness is for a  rotor?
Thanks...
1969 Fathom Green
SS 350 Coupe 
71 Impala Sport Coupe

Ed_B

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Re: Split rotors
« Reply #10 on: July 23, 2007, 10:42:01 PM »
Original 2 piece rotors were .965 minimum.

Ed

Bjv69ss

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Re: Split rotors
« Reply #11 on: July 23, 2007, 10:54:25 PM »
Thank you so much!!!
1969 Fathom Green
SS 350 Coupe 
71 Impala Sport Coupe

Flowjoe

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Re: Split rotors
« Reply #12 on: July 23, 2007, 10:59:07 PM »
The question still remains..is there any source for just the rotor?  Is there a work around keep the rotors in service.  I have at least 8 split rotors/hubs here some with issues (one wiht a warped rotor, one under sized, one with a bad bearing race)...the other s unknown.  I can mix and match but it would be nice to end up with 8 usable two piece set ups.

Jerry@CHP

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Re: Split rotors
« Reply #13 on: July 24, 2007, 11:31:03 AM »
Just wanted to mention that you can cut original rotors down to about .930" without any issues.  The .965" minimum is a very conservative value.  I've used rotors at this .930" thickeness on my race car without any issues.

Jerry

Bjv69ss

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Re: Split rotors
« Reply #14 on: July 24, 2007, 10:25:32 PM »
I don't have any fancy tools for measuring but used a 1" open end wrench for a guesstimate measurement. It fits but it's snug over the rotor so I mught just luck out and be able to use them again after machining.  I was going to push the .965 anyway. It's nice to hear thinner will still work.
1969 Fathom Green
SS 350 Coupe 
71 Impala Sport Coupe