This thread has a lot of great info 65 Fury disc brake conversion advice
Where Do You Guys Get New Replacement Brake Rotors for the 69 - 72 Fuselage C Bodies?
- Thread starter saforwardlook
- Start date
just a heads up when i was doing my 1972 newport custom chrysler put on some of them new yorker spindles which are bigger ( bearing and race's ) . when i ordered my rotors and bearing for the newport they did not fit after doing a little research i found out the new yorkers had a bigger spindle so i ordered a set and they fit perfect on my newport 
i learned the hard way but thats what i found
i learned the hard way but thats what i found
just a heads up when i was doing my 1972 newport custom chrysler put on some of them new yorker spindles which are bigger ( bearing and race's ) . when i ordered my rotors and bearing for the newport they did not fit after doing a little research i found out the new yorkers had a bigger spindle so i ordered a set and they fit perfect on my newport
i learned the hard way but thats what i found
Various models of Chryslers all used the same spindles. As FURYGT noted in a post in a thread connected to one of Welder guys threads, however, in 1972 there was a late running change to the larger 1973 spindles that took place across all the models. So in your case, the difference is likely because of early vs. late production.
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that explains alot but in todays auto parts world these kids dont know that and when you explain it they look at you like you dont know what you are talking about . you also have to watch when you order from rock auto . i order from them alot if you arent a old school mechanic you can go crazy so just keep asking QUESTIONS because here you can learn alot about these old cars
Based on your glowing reviews, I am tempted to order Centric 121-63021 rotors for my 1970 300 TNT 'vert. A good 15 months later, are you still happy with the choice? Any experience with how it compares to the Raybestos 7012R?
Edit:as @Boiler_Gawd suggested, the Centric website has more technical info and excellent pics.
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73Coupe
Senior Member
Where are they made?
After a few years and 20k miles, the Raysbestos seem to be holding strong.
I like the finish on the Centric rotors though.
Edit: checked records, 5 years & 42k miles...dang.
After a few years and 20k miles, the Raysbestos seem to be holding strong.
I like the finish on the Centric rotors though.
Edit: checked records, 5 years & 42k miles...dang.
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They have been fine for me, no issues at all. Very good company IMO.
They have a production facility in Southern California, specifically in Inglewood I believe. I am not sure whether the rotors specifically are made in California or some other location though. Here is some background on the company:
History
I do believe I recall some of the rotor boxes say made in China, but that is not unusual anymore and the Centric rotors are claimed to be manufactured from high carbon steel rather than the mild steel of the originals, so wear ought to be better. I would expect Raybestos two piece rotors are still made of mild steel like the originals.
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I looked for the Raybestos 7012R for that reason, and also because I have been happy thus far with Raybestos products. Rock Auto happens to have them in stock at $80 each ($15 more than what @330dTA paid in April
). None of the other major supply places seems to stock them anymore -- I see a few on eBay or Amazon, from vendors with imperfect repetitional scores, and that's it. That is surprising, as Raybestos' own website still lists them.@330dTA -- Note that the RA search engine incorrectly does not list these rotors for 1970 Chrysler 300, even thought the RA applications list does -- something is messed up at RA.
As for Centric, RA lists them as the "economy" choice, and I can see that given their lower price of $46 a pop. In would usually pass on the "economy" solution, but @saforwardlook's recommendation and the information he has supplied on the company lead me in that direction.
Bottom line, I am thinking of doing Raybestos 7012R rotors with PDG39M pads (Element 3, their top-of-the-line if I am not mistaken), all from Rock Auto, or Centric 12163021 rotors from RA with Proformer 39D pads from Napa (with which I have been happy so far on Medina).
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polara71
Old Man with a Hat
So, to recap, the rotors for say your 70 300 are now being made but as a one piece, not the two piece style. They fit and roll well with no issues?
As far as I know the brake rotors for the 1970 and 1971 Chryslers are the same. When I look at the options for my 1971 Chryslers on Rock Auto, a number of options from Rock Auto appear.
1971 CHRYSLER 300 7.2L 440cid V8 Rotor | RockAuto
Even Raybestos shows one piece rotors as an option, at a lower price than Centric so I am wondering whether they are actually made by Raybestos or ???
Raybestos and Dynamic Friction are more expensive alternatives. In the expensive options, Rock Auto charges a lot for the two piece Raybestos rotors and the Dynamic Friction options are high priced too with one being slightly cheaper than the other. The more expensive Dynamic Friction one says it is "coated". I don't know whether the Dynamic Friction more expensive options are one or two piece rotors.
My guess would be that the use of high carbon steel one piece rotors now available negates the need for two piece rotors since the hub portions of the two piece rotors don't need to be so beefy to hold up well. The two piece rotors are significantly heavier than the one piece rotors too.
50 years later, perhaps new technology/manufacturing processes allows the one piece, lighter rotors to be just as durable or maybe more than the originals.
I do not beat my cars but so far, no issues with the Centric rotors nor any of the cars with them that I have sold mostly overseas either since I have heard nothing amiss.
1971 CHRYSLER 300 7.2L 440cid V8 Rotor | RockAuto
Even Raybestos shows one piece rotors as an option, at a lower price than Centric so I am wondering whether they are actually made by Raybestos or ???
Raybestos and Dynamic Friction are more expensive alternatives. In the expensive options, Rock Auto charges a lot for the two piece Raybestos rotors and the Dynamic Friction options are high priced too with one being slightly cheaper than the other. The more expensive Dynamic Friction one says it is "coated". I don't know whether the Dynamic Friction more expensive options are one or two piece rotors.
My guess would be that the use of high carbon steel one piece rotors now available negates the need for two piece rotors since the hub portions of the two piece rotors don't need to be so beefy to hold up well. The two piece rotors are significantly heavier than the one piece rotors too.
50 years later, perhaps new technology/manufacturing processes allows the one piece, lighter rotors to be just as durable or maybe more than the originals.
I do not beat my cars but so far, no issues with the Centric rotors nor any of the cars with them that I have sold mostly overseas either since I have heard nothing amiss.
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polara71
Old Man with a Hat
So the answer is yes Rotors are available.
I wonder why, they were gone, unobtainable for years.
I wonder why, they were gone, unobtainable for years.
Rapid Prototyping technology is proliferating worldwide and makes it possible to produce low volume specialty parts and be able to sell them at a profit. Companies like Centric have design teams of engineers with the advanced rapid prototyping technology, machinery and design talent to make this possible. They can reproduce old designs using modern technologies and advanced metallurgy to build a part in relatively low volumes that are significantly better than the old one at a cost that regular consumers can afford.
The reason that Gary Goers sold his business making thousands of parts for primarily the Forward Look cars to Quirey Quality Design is because they have a lot of rapid prototyping technology and can build thousands of different low volume parts and still make a profit at the end of the day, and the new products are far superior to what Gary was able to reproduce only because of now widely available new technology and equipment. QQD is still in its infancy to some degree and working on getting more and more available but the virus and the sheer volume of such parts makes its startup more drawn out at present. Maybe they can chime in if I don't have it exactly correct.
That is why I stress that as a nation we need to be sure we make advanced education affordable to young people so that we can be competitive as a nation when the rest of the world isn't standing still and if we want to keep our standing in the world, we need to graduate the best engineers in the world. That is how we got to be at the top and we can't let up if we want to stay there.
Here is a video from Jay Leno's garage that highlights just one company's efforts to meet his similar needs:
'Leno's Garage' shows the future of finding rare parts
Also, try finding rear wheel brake cylinders for our cars such as a 1970 - 71 Chrysler at parts outlets such as Autozone, OReilly Auto Parts, NAPA or other similar outlets anymore. They aren't available. But the reality is that Centric does reproduce those wheel cylinders and are available through more obscure specialty parts stores and on Rock Auto only because the other major outlets will not bother to stock or make available such old parts just because of warehousing and inventory limitations/costs of selling very few such low volume parts (NAPA sells the Centric rotors but not their wheel cylinders for example). I also believe that Rock Auto buys up any old car remaining inventory from companies such as Raybestos when Raybestos can't sell them through the regular retail outlets anymore and that is why you can still find some 2 piece rotors for our cars only from Rock Auto and probably not many other places. I doubt Raybestos still will reproduce our old car components and focuses on newer model vehicles if they are still in business. For the same reason, you will probably find the newest companies producing parts for our old cars only on Rock Auto since the volume retail stores would not want them, e.g. such as Dynamic Friction in the example a couple of posts above.
Rock Auto has a business model based on having numerous warehouses located strategically throughout the U.S. and can ship from any of them rapidly and therefore can stock specialty low volume parts and still make a profit (they do not have retail stores in most every major U.S. city like the other major outlets, thereby saving substantial costs). Rock Auto is much like Amazon in their business model and that is why Amazon is putting retail shopping malls out of business and at least for old car enthusiasts why retail outlets will increasingly lose their business (note that Rock Auto also has an online publication for their users that highlights old car projects and associated photos and you also get wih each order small magnetic cards with collector cars on them that one can collect). That is why for car collectors at least, Rock Auto is our only major source of reproduction parts for our old cars that is left. The only problem with them is the risk of getting a wrong part for whatever reason and having to return it - you can't talk to anyone about returning a part and have to ship the part back to them which is a hassle rather than going to your local high volume retailer and just getting a refund.
We will probably still keep going to retail outlets for things such as car batteries and various lubricants/rust solvents, etc.
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Nobody mentioned the fact that technically one of the '69-'70 rotors would need to have reverse thread lug studs (Raybesto 7012*L*) to be correct vs the later '71-'72 cars which would have the more common right hand thread studs (7012*R*) all away around.
These new rotors probably only come in right hand thread theses days. The parts interchange is smart enough to recognize there is a different part number required for the older cars but isnt smart enough to say hey these rotors will work for both sides if you also replace the lug nuts or the studs.
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Thank you for pointing this out, I completely forgot about this specificity: the only site I have seen that stresses the point is Parts Geek, stating that "R-Line = With Right Hand Threads"
I should put a note in each of my cars re: the directionality of the studs on that car.
PS: I have not been able to find 7012L rotors, only 7012R.
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james bernard
New Member
I am in the middle of doing a front drum to disc conversion. If you have the 69 to 72 spindles, you can get the rotors at Autozone right now. Duralast Part number 5300. That number will cross reference to the 7012R rotor that you are hearing about. They are $128.00 a piece. I wouldn’t waste any time buying them because they are only making a limited run on them. Once they are gone, who know when they’ll be available again.
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