The Dodge Challenger Message Board

Hello.
I wanted to ask about my 70 chally front disc upgrade and I'm looking for similar threads when I see several posts from me saying nothing, or just kkkkkk. They were sent at a similar time, but I'm sure weren't write by me. Anyway I don't know the way somebody can do that.
Please anybody could erase them? It really hurts!!!!

On the other side I want to upgrade my front discs and I'm checking about wilwood, ssbs or baer brands.
Personally I like the wilwood 140-2726-BD kit, as shown http://www.summitracing.com/parts/WIL-140-2726-BD/

Any other recommendation?

Thanks to everybody.

plum-crazy wrote:Hello.
I wanted to ask about my 70 chally front disc upgrade and I'm looking for similar threads when I see several posts from me saying nothing, or just kkkkkk. They were sent at a similar time, but I'm sure weren't write by me. Anyway I don't know the way somebody can do that.
Please anybody could erase them? It really hurts!!!!

I removed 12 duplicates about wheel studs change. Those weren't exact duplicates as each one of them had slight changes to previous one. Added brackets, fixed typos etc. and posted about one minute apart. Anyway I just left last one as it seemed to be most finalized version of them. I checked old forum database and posts were there before upgrade as well. Anyway, now they're all gone.

plum-crazy wrote:Personally I like the wilwood 140-2726-BD kit, as shown http://www.summitracing.com/parts/WIL-140-2726-BD/
Any other recommendation?

Watch out, this kit is for drum spindles. There are kits for disc spindles (1973 and later). You can use these with a 1970-72 spindle if you buy bearing adapters (the 73 spindle uses a larger inner bearing than the 70-72 model).

I have this kit (disc spindle version) on my 73 'cuda.
It's not that bad, but I would advise against it, for the following reasons :
- the rotor has a diameter of 10.87", i.e. almost the same as the OEM rotor.
- the rotor has a thickness of .81", less than the OEM 1"

My preferred setup for front discs at the moment, retaining 15" wheels, would be AR Engineering's caliper brackets, Wilwood 4-pot calipers (you can find the caliper PNs on AR engineerings's website or call Mancini), and OEM 11.75 Mopar "cop-car" rotors (1977 Cordoba rotors for example, they can be found on eBay, from the brand Rotorpros or others).

I would not buy drilled rotors for anything other than a show car.
They may look cool, but they are useless except on dedicated racecars (if pad temperature leads to boiling, the holes can help to evacuate gases - this usually happens at temperatures far from what an iron rotor can withstand anyway, I have not seen drilled rotors in competition except for ceramic rotors for a while).
Holes make rotors more crack-prone, and the Wilwood rotors are already on the light side, they don't need to be lightened. I like slotted rotors, though. But the number of slots on a rotor can have an impact on pad life.

Wilwood calipers are fine, unless you're driving under the rain or in a very dusty environment.

fbernard wrote:

plum-crazy wrote:Personally I like the wilwood 140-2726-BD kit, as shown http://www.summitracing.com/parts/WIL-140-2726-BD/
Any other recommendation?

Watch out, this kit is for drum spindles. There are kits for disc spindles (1973 and later). You can use these with a 1970-72 spindle if you buy bearing adapters (the 73 spindle uses a larger inner bearing than the 70-72 model).

I have this kit (disc spindle version) on my 73 'cuda.
It's not that bad, but I would advise against it, for the following reasons :
- the rotor has a diameter of 10.87", i.e. almost the same as the OEM rotor.
- the rotor has a thickness of .81", less than the OEM 1"

My preferred setup for front discs at the moment, retaining 15" wheels, would be AR Engineering's caliper brackets, Wilwood 4-pot calipers (you can find the caliper PNs on AR engineerings's website or call Mancini), and OEM 11.75 Mopar "cop-car" rotors (1977 Cordoba rotors for example, they can be found on eBay, from the brand Rotorpros or others).

I would not buy drilled rotors for anything other than a show car.
They may look cool, but they are useless except on dedicated racecars (if pad temperature leads to boiling, the holes can help to evacuate gases - this usually happens at temperatures far from what an iron rotor can withstand anyway, I have not seen drilled rotors in competition except for ceramic rotors for a while).
Holes make rotors more crack-prone, and the Wilwood rotors are already on the light side, they don't need to be lightened. I like slotted rotors, though. But the number of slots on a rotor can have an impact on pad life.

Wilwood calipers are fine, unless you're driving under the rain or in a very dusty environment.

Thats good information Fabien. I want to upgrade my '72 disc braked car to the larger 11.75" rotor, but all the kits are aimed at converting from drums, as well as offering "showy" products.
Can you tell me more about the bearing adaptors, is that the only difference between '73 and earler spindles?
I would be more than happy with the bigger rotors and some decent pads, like the Firm Feel ones but without sourcing and changing the spindles.

I fitted the 73-74 spindles to my Challenger so I could fit the 11.75" rotors.

The only difference to them is the larger diameter cast-in seat for the inner bearing. The 1970-72 inner bearing was not taking loads very well so there was a design change.

Most of the aftermarket disc brake upgrade parts these days now require the drum brake spindle which is getting just as hard to find (and expensive) as the disc brake spindle was.

http://www.moparaction.com/tech/archive/disc-main.html

Red raven needs to read this, very important info

Adrian Worman wrote:[Can you tell me more about the bearing adaptors, is that the only difference between '73 and earler spindles?
I would be more than happy with the bigger rotors and some decent pads, like the Firm Feel ones but without sourcing and changing the spindles.

that's the only difference. You will find a picture of the adapters I'm talking about on this page.

You should also get in touch with DoctorDiff (Cass, (406)883-4772), he has good brake kits and they are reasonably priced. He has the only rear disc kits that work with OEM axle bearings without a lot of work too.
(The wilwood kits are a nightmare at the rear - integrated Corvette-style parking brakes can bend the backing plates easily, and then there's no more parking brake ; the green bearing design has lots of problems not found in the OEM tapered bearing).

If I had to say something about the wuality of the wilwood products, I'd say this :
Calipers are good.
Rotors are good to excellent (although not thick enough on street models).
Pads are good although their do-it-all compound could have a bit more "bite"(I haven't tested them all)
Screws and washers are not too bad. Machined aluminum parts are OK.
All the rest, especially the brackets, varies from pure shit (rear) to acceptable (front).

Master Power brakes have the new 73-style spindles (PN# SP2627), other suppliers have these too.

If you switch to 4-pot calipers (or more), you will probably need to change your master cylinder to have more displacement (you have to feed enough brake fluid in the lines when you depress the pedal to reach operating pressure, some calipers will require more fluid than OEM calipers did. You will need a bigger bore MC (of course, the bigger the piston, the harder it is to push it - unless you have good engine vacuum, you may find the booster does not assist enough). All that can take some work.

The page Dave referred to (Disc-O-Tech from Mopar Action) is the cornerstone of 15-inch wheel modern braking for vintage Mopars. You will also find it's possible to use Viper calipers(I think these bolt on to drum spindles with AR engineering brackets).

It might be possible to use these on pre-73 drum spindles with the adapters.

Excellent info mate, had a look on the website of Scarebird and saw those bearing adaptors. I take it then that I could use that bearing adaptor with a pair of 11.75 std or Unicast rotors, the larger caliper bracket and still retain the factory calipers. No need to worry about piston displacement, caliper to master cylinder ratio etc.Hope I've got that right
I like your description of Wilwoods products

I have the wilwood kit on all 4,s and yes you are right the rear is a pain in the ass,but the kit I have uses a drum inside the rotor for the parking brake,

And I have been lucky so far with the green bearing , but have heard alot of people have had issues with this bearing even with out discs on the rear,

I really love the stopping power these brakes (despite the fact they look small and thin) but they do work quite well,I also used Wilwood,s large bore master cylinder , works great,

but the SSBC or the M P brake kits are cheaper use mostly stock parts and are easier to install

To be honest though Drew. I would have perfered your brakes to work a little better. Especial with 4 or 5 of us in the car going up the off ramp at 90mph.

dave-r wrote:To be honest though Drew. I would have perfered your brakes to work a little better. Especial with 4 or 5 of us in the car going up the off ramp at 90mph.

LOL good one that!

drewcrane wrote:Red raven needs to read this, very important info

Im reading bud...

dave-r wrote:To be honest though Drew. I would have perfered your brakes to work a little better. Especial with 4 or 5 of us in the car going up the off ramp at 90mph.

That last 50 feet took for ever........hahahahah...........

RedRaven wrote:

dave-r wrote:To be honest though Drew. I would have perfered your brakes to work a little better. Especial with 4 or 5 of us in the car going up the off ramp at 90mph.

That last 50 feet took for ever........hahahahah...........

yea a real pucker test....................and then it stopped in time to save some face eh

drewcrane wrote:

dave-r wrote:To be honest though Drew. I would have perfered your brakes to work a little better. Especial with 4 or 5 of us in the car going up the off ramp at 90mph.

LOL good one that!

I'm with Dave, on that one! I was there...

patrick wrote:

drewcrane wrote:

dave-r wrote:To be honest though Drew. I would have perfered your brakes to work a little better. Especial with 4 or 5 of us in the car going up the off ramp at 90mph.

LOL good one that!

I'm with Dave, on that one! I was there...

Hey you kids behave ,I had to deal with alot of lard in the seats of that car that day

!!!

Well with the 100kg Paddy, the 50 kilo Brit and Pat also it certainly added up lol..............

RedRaven wrote:Well with the 100kg Paddy, the 50 kilo Brit and Pat also it certainly added up lol..............

I thought you guys weighed in stone increments about 12 or 13 stones at least

Yeah. I am the lightest at just under13 stone (180lbs).