Wilwood 4 piston Dynalite caliper w/ 11" dia. .810" thick rotor

or

Mustang Cobra 10th anniversery 2 piston w/ 13" dia. 1.1" thick rotor.

not concerned about the bling or cool factor here.

13 inch rotors require 17 inch wheels, lots of folks dont like that because they dont want their classic to look too bling, but if you dont mind then I guess I would go with the bigger brakes.

I am thinking not only in terms of absolute stopping power but handling as well as there is a bit of an unsprung weight difference between an 11" x .81" rotor and a 13" x 1.1" rotor. If a car handles better, then there is less of a need to depend solely on the brakes. A good set up minimizes the need and all a larger rotor does is help eliminate heat, fade and lock-up. A quad Dynalite with an 11 will still give a very nice rate of deceleration, and the 4 pistons have a bit more clamping force..although I haven't compared total area of the piston bore diameters with each caliper.

In heavy track work the Wilwood combo just won't keep enough heat out of the system to prevent fade (maybe if it were MUCH lighter and set up for track), but my car will not see the track,.. I have a horse of another color for that

JD

quote:

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Originally posted by jeffdavison:
Steve's kit is one of the options I am considering. It's a great value, and I already have a set of 16's (text says ok, but am re-verifying with Steve and await his email)

I am thinking not only in terms of absolute stopping power but handling as well as there is a bit of an unsprung weight difference between an 11" x .81" rotor and a 13" x 1.1" rotor. If a car handles better, then there is less of a need to depend solely on the brakes. A good set up minimizes the need and all a larger rotor does is help eliminate heat, fade and lock-up. A quad Dynalite with an 11 will still give a very nice rate of deceleration, and the 4 pistons have a bit more clamping force..although I haven't compared total area of the piston bore diameters with each caliper.
but my car will not see the track,.. I have a horse of another color for that

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Previa rotors have correct bolt circle but the bolt holes themselves are just a bit small diameter of the wheel studs cuz they're metric and need to be drilled to 9/16 to clear. Also the diameter of the drum hub needs to have its outer diameter turned down to fit in the inside diameter of the rotor...about 1/8" or so. Other than that its a nice bit of kit. Dynalites are a proven caliper. The only negative about them is since they are a race part, the pistons don't have dust shields. Not a worry if you maintain and clean the piston bores and seals them every fluid change. VERY light and I found them for $103 each with out pads.

I've since decided to spring for Steve's 13" Cobra kit. Just a little more moola but larger swept area and greater heat dispersion, plus the calipers are designed for everyday driving and aren't as high maintenance as the Wilwoods.

Thanks

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• '68 coupe, '66 289 C code engine.
  
• edel 600cfm carb, performer intake, dual exhaust, flowtech headers
  
• http://www.geocities.com/ottouk_77/68mustang.htm
  

They will fit in 16" Torq Thrust II's , just.
Steve said that Bear had a template at their website that uses the same PBR caliper and Cobra 13" rotor. I went there, d'ld the template (have to scale up the print out about 106% so that an inch printed equals an inch in the real world. Glued it to a piece of carboard and cut it out. Put it in the wheel and checked out the clearances allowed. That's the main reason I went with Steve's kit as I have already commited to and purchased my wheels.