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Old 04-29-2012, 12:06 AM
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larger brakes

This involves a 1982 Pont. t-a. I want to install larger brakes (disc f&r),but retain 15" wheels What models r direct bolt-up?

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Old 04-29-2012, 11:45 AM
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check out summitracing.com youll find what you need guaranteed
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Old 04-29-2012, 12:28 PM
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I think you mean better rather than larger as you´re strapped for space with 15" wheels.

Search Summit be prepared to pay, this is just a front kit search.
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Old 04-29-2012, 01:49 PM
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You will be limited to ~11 inch rotors in the front with 15" wheels - and that's not even a positive depending on the brand of caliper. But with that said, you can go with 4, 6 and maybe more piston calipers, varied size pistons, thicker rotors, chilled iron rotors, drilled, curved vane, slotted and so on rotors - again, depending on the brand plus the thickness of your wallet. Summit is a good place to start, but are limited. Getting to the rears - the same unless there is a separate puck mechanical brake - then you will need some 16 or more inch wheels.

This Wilwood arrangement, 11.75 rotor, will not fit a 15" wheel:



This Wilwood with a 10" rotor will:

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Old 04-29-2012, 06:25 PM
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Thanx for the info. car definitely needs better stoppers,but as I mentioned,I'm hoping to retain stock 15s
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Old 04-30-2012, 11:18 AM
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Quote:
Originally Posted by Irelands child
You will be limited to ~11 inch rotors in the front with 15" wheels
Funny, because my 1984 Olds Custom Cruiser wagon came from the factory with 12" rotors and 15" wheels...
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Old 04-30-2012, 08:41 PM
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Quote:
Originally Posted by joe_padavano
Funny, because my 1984 Olds Custom Cruiser wagon came from the factory with 12" rotors and 15" wheels...
And if he uses the Olds spindles on the TA, they bolt up, with a 94 Camaro 12" rotor, Olds inner bearing and seal, 94 Camaro outer bearing, he can put the stock TA 15" wheels back on it. Cadillac and Buick spindles work too.
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Old 05-01-2012, 05:18 AM
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Quote:
Originally Posted by enjenjo
And if he uses the Olds spindles on the TA, they bolt up, with a 94 Camaro 12" rotor, Olds inner bearing and seal, 94 Camaro outer bearing, he can put the stock TA 15" wheels back on it. Cadillac and Buick spindles work too.
..........and end up with the dinky GM single piston calipers which aren't any better then what he has. Lot of work and money for none to minimal gain.

Why not let's get back to what he really wants - better stopping power, not obsolete parts that might work.
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Old 05-01-2012, 09:19 AM
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Quote:
Originally Posted by Irelands child
..........and end up with the dinky GM single piston calipers which aren't any better then what he has. Lot of work and money for none to minimal gain.

Why not let's get back to what he really wants - better stopping power, not obsolete parts that might work.

Wilwood make a very effective caliper that will bolt on to that spindle.

http://www.wilwood.com/Calipers/Cali...spx?subname=GM D52 Dual Piston

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Old 05-01-2012, 10:54 AM
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Quote:
Originally Posted by Irelands child
..........and end up with the dinky GM single piston calipers which aren't any better then what he has. Lot of work and money for none to minimal gain.

Why not let's get back to what he really wants - better stopping power, not obsolete parts that might work.
You might want to brush up on your physics. Changing from an 11" rotor to a 12" rotor, while keeping the same calipers, DOES increase braking force by increasing the lever arm. It's no different than slipping a pipe over the end of your breaker bar. This would be the reason WHY GM used larger rotors on the heavier cars. And as noted above, you can ALSO get calipers with larger piston area that FURTHER increases braking force.

Note that the 12" rotors were used on all 1977-1996 B-body wagons, all C/D body cars (Olds 98, Buick Electra, Caddy Fleetwood) and the B-body cars with the police/taxi package.
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Old 05-01-2012, 12:46 PM
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WTF are we arguing 30 year old obsolete crap for. The OP wants better brakes, not the same old junk he already has. And yes, my physics could be updated but am well aware of swept area, lever arms, heat transfer,etc, etc, etc. Engineering physics 101 was a long time ago, but I still occasionally use it.

This forum is getting to be very quickly, even you 'old timers', a haven for deconstructive arguments and malcontents with miniscule points to belabor.
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Old 05-02-2012, 08:26 AM
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Quote:
Originally Posted by Irelands child
WTF are we arguing 30 year old obsolete crap for. The OP wants better brakes, not the same old junk he already has. And yes, my physics could be updated but am well aware of swept area, lever arms, heat transfer,etc, etc, etc. Engineering physics 101 was a long time ago, but I still occasionally use it.

This forum is getting to be very quickly, even you 'old timers', a haven for deconstructive arguments and malcontents with miniscule points to belabor.
No offense, brother, but there is always more than one solution to a problem. Just because you don't agree, doesn't mean it's not gonna work for him. No sense getting all huffy over it. BTW, 15" Weld ProStars fit fine over 4th gen Corvette 12" brakes...

Russ
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Old 05-04-2012, 01:35 AM
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hey evry 1,thanx for the info. i want the car to retain the original look on the outside. it has only 44k on it & is rust free. thanx again.
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