Potential rotors for 65'-70' 88/98 disc brakes
November 8th, 2018, 02:26 PM
#41
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Location: Fairview WV
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Doubt you still have these...
Since this is a 3-year old post, I doubt you still have the 67/68 rotors, but thought I would ask.
November 8th, 2018, 02:27 PM
#42
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
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November 8th, 2018, 04:36 PM
#43
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Location: Fairview WV
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November 8th, 2018, 06:41 PM
#44
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Location: Research Triangle Park, NC
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I never did buy the Fleetwood rotors because I was able to buy 2 '68 Olds rotors on Ebay from a gentleman's son who cleaned out a GM factory in Canada before it closed down around that time of the post. Craig wanted double.
Speaking of the offset, is the offset different on the Fleetwood rotors for sure of just they might be? Just curious from reading the old threads.
Speaking of the offset, is the offset different on the Fleetwood rotors for sure of just they might be? Just curious from reading the old threads.
November 9th, 2018, 10:28 AM
#45
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Location: West Hempstead, New York
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Delmont 88 --- see you have two threads about these HUB & ROTOR Assemblies -- and I'll answer you here, presently; I already did on the other one seconds ago......
I am not in the library much, as our SUPER moderator Joe Padavano (over 30,000 posts --- halping out the Oldsmobile world repeatedly) points out!!!!!!!!!!!!!!
I DO HAVE those two (2) N.O.S. 1967 - 1968 N.O.S. Original KELSEY - HAYES Front Hub & Rotor Assemblies from the post from 3 & 5 years ago ----- and N.O.S> ++ Asbestos ++ Brake Pads for this application,
as well, such that you don't rip up to smithereens these very valuable Hub & Rotor Assemblies.......
ALWAYS Simply Best to CALL ME ------ Craig -- 516 - 485 - 1935....... and I will tell you some very interesting stories about these rotors & the inquires through the years!!!!!!!!!!!!!!!!!!!!
I am not in the library much, as our SUPER moderator Joe Padavano (over 30,000 posts --- halping out the Oldsmobile world repeatedly) points out!!!!!!!!!!!!!!
I DO HAVE those two (2) N.O.S. 1967 - 1968 N.O.S. Original KELSEY - HAYES Front Hub & Rotor Assemblies from the post from 3 & 5 years ago ----- and N.O.S> ++ Asbestos ++ Brake Pads for this application,
as well, such that you don't rip up to smithereens these very valuable Hub & Rotor Assemblies.......
ALWAYS Simply Best to CALL ME ------ Craig -- 516 - 485 - 1935....... and I will tell you some very interesting stories about these rotors & the inquires through the years!!!!!!!!!!!!!!!!!!!!
July 13th, 2019, 07:55 PM
#51
1968 442 Convertible
Join Date: Feb 2019
Location: Broken Arrow, Oklahoma
Posts: 347
Does anyone have the dimensions of the Olds rotor? I don't find these in a quick search of this forum. I see a lot of posts where people say they will measure, but they never post the results. Odd that this important data is completely absent from any discussion?
If you are able, please post the following dimensions:
Outer Dia
Overall height from rotor back to hub face
Hub face thickness
Rotor thickness
Hub hole Dia
If you are able, please post the following dimensions:
Outer Dia
Overall height from rotor back to hub face
Hub face thickness
Rotor thickness
Hub hole Dia
July 14th, 2019, 05:54 AM
#52
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Location: Macon, GA
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I don't have the rotors any longer. I do know that the OD of the rotor is 11-7/8", and the rotor thickness is 1.25". The dimensions of the 69 rotor match the dimensions of the 2000 camaro, with exception to hub bore and bolt pattern.
Last edited by 68 D88; July 14th, 2019 at 05:57 AM.
July 14th, 2019, 06:20 AM
#53
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 47,259
You might want to read this thread (which has photos).
The rotors for a 2003-2006 Cadillac CTS with base suspension are actually closer to the OEM 69-70 rotors. The Camaro rotors have a different offset than the OEM rotors, whereas the CTS rotors are the same within a a few thousandths of an inch. I've had a pair of the CTS rotors machined to fit - which simply requires drilling new lug holes and opening up the center bore. They work fine. The Camaro rotors are a better match to the 67-68 full size rotors that use the four piston calipers.
The rotors for a 2003-2006 Cadillac CTS with base suspension are actually closer to the OEM 69-70 rotors. The Camaro rotors have a different offset than the OEM rotors, whereas the CTS rotors are the same within a a few thousandths of an inch. I've had a pair of the CTS rotors machined to fit - which simply requires drilling new lug holes and opening up the center bore. They work fine. The Camaro rotors are a better match to the 67-68 full size rotors that use the four piston calipers.
July 14th, 2019, 12:17 PM
#54
1968 442 Convertible
Join Date: Feb 2019
Location: Broken Arrow, Oklahoma
Posts: 347
So now we know:
OD = 11.88
Rotor Thk = 1.25
Hub Cast ID at MMC = 6.0, Thanks Joe, your link did provide a dimension!
Anyone got a big car wheel lying around? Measure the hub bore and we will have one more piece of the puzzle.
Also need overall rotor height and hub face thickness.
OD = 11.88
Rotor Thk = 1.25
Hub Cast ID at MMC = 6.0, Thanks Joe, your link did provide a dimension!
Anyone got a big car wheel lying around? Measure the hub bore and we will have one more piece of the puzzle.
Also need overall rotor height and hub face thickness.
Last edited by bry593; July 14th, 2019 at 12:47 PM.
July 14th, 2019, 05:58 PM
#55
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Location: Macon, GA
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Ok, so when I looked the 2000 camaro rotor, it was so damn close to 69, all be that probably 6 years ago when I looked. I recall it being within 1/16 on hub height. With a floating caliper, it'll compensate. Here's some more progression.
Last edited by 68 D88; July 14th, 2019 at 06:09 PM.
August 27th, 2019, 06:26 AM
#59
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Join Date: Dec 2005
Location: Macon, GA
Posts: 119
The Delmont is back in service. My friend reports he took her out last night and pounded on the brakes, and has never felt such good brake pedal response. He also used a 71-76 booster and dimpled the fender well for the lines.
Last edited by 68 D88; August 27th, 2019 at 06:28 AM.
August 24th, 2021, 12:37 PM
#60
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Join Date: Apr 2014
Location: mid indiana
Posts: 8
Alright guys, I'm going to try this out on my 69 delta. I'm on rock auto and they list two different diameters for the 2006 base cts rotors. one is a 298mm\12.72" and the other is a 302.7mm\11.92". can anyone confirm which one I should grab?
August 26th, 2021, 04:54 PM
#64
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Location: mid indiana
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August 28th, 2021, 06:58 AM
#67
Old(s) Fart
Join Date: Mar 2007
Location: Northern VA
Posts: 47,259
These photos are a CTS rotor compared to an NOS 69-70 rotor.
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