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Hello:


LX 91-92 escort has 13" wheel and 9.25" rotor and smaller front caliper
LX/GT 93+ escort has 14" wheel and 10.25" rotor and bigger front caliper


I am changing wheels on my LX 91 form the stock 13" to 15".

Does it make sense to change the stock rotor and caliper to the
bigger LX/GT 93+ size as well?

What do I gain by having the bigger rotor/caliper after changing wheels
from 13" to 15"?



Thank you,



Rob.
 

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what you gain by changing to the bigger rotors and calipers is better(more force) braking...I'm not sure but that may require a different proportioning valve...someone with more exp here can say for sure on that...
 

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You would/should need to get the different hubs to fit the larger rotors. The larger brakes are good for better braking power. Cheap brake upgrade. If you really want to make it cool, swap the rear out for GT brakes. Gotta have 4 wheel discs.


Tom
 

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ive done the front brake upgrade...

yo ujsut need the front steering knuckle, calipers, and rotors. yes the calipers are different, they rear side of them is longer to accomodate having go to go on top of a larger rotor.

oh, and some 93+ cars had 13" wheels too, and they all would have had the 9.25" rotors up front. LXs had 9" rear drums until 93 and then they got reduced to 7". which is why some ppl who had 13" rims on their 93+ have crappy braking power.

9.25" rotors and 7" drums are tiny!
 

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Larger diameter rotor/drum = more braking torque to the tires with a given amount of friction

More swept area on rotor drum = better heat dissipation (less friction placed on any given area of the rotor for the same braking effect)

Brake cooling ducts and backingplates with some high performance pads and good brake fluid will yeild adequate braking performance for most autocross/road-race applications. If you plan to up the power beyond the 180hp level.. larger brakes may be neccessary to fight heat soak. Disk brakes.. always.. always.. cool (resist fade) better than drums.
 
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