Brett! Posted March 17, 2015 Share Posted March 17, 2015 The stock brakes are not quite cutting it anymore since I uped my rim size to 15". Has anyone done anything to boost breaking performance? Quote Link to comment Share on other sites More sharing options...
nipper Posted March 17, 2015 Share Posted March 17, 2015 What are you driving? Quote Link to comment Share on other sites More sharing options...
turbosubarubrat Posted March 17, 2015 Share Posted March 17, 2015 The stock brakes are not quite cutting it anymore since I uped my rim size to 15". Has anyone done anything to boost breaking performance? Get rear disks off a turbo 3rd gen. Your master cylinder or brake booster might not be what the used too also. What are you driving? He has a 1st gen brat Quote Link to comment Share on other sites More sharing options...
Brett! Posted March 17, 2015 Author Share Posted March 17, 2015 Correct, I have a first gen Brat. I was also considering trying to find oversized rotors and building a custom caliper relocation bracket. What years constitutes generation 3? Quote Link to comment Share on other sites More sharing options...
Scooner Posted March 18, 2015 Share Posted March 18, 2015 Generation 3? A baja?? Quote Link to comment Share on other sites More sharing options...
turbosubarubrat Posted March 18, 2015 Share Posted March 18, 2015 Refers to 1st, 2nd, and 3rd gen leones 1st 2nd 3rd Quote Link to comment Share on other sites More sharing options...
Scooner Posted March 18, 2015 Share Posted March 18, 2015 Haha i thought he meant Brats and I was being a sarcastic. Quote Link to comment Share on other sites More sharing options...
Leeroy Posted March 18, 2015 Share Posted March 18, 2015 Simplest upgrade is the ventilated discs and rotors from a Gen2 (1983+). These brakes are mounted on my 1974 DL Sedan: As noted by others the rear disc brakes from turbo Gen 3 models can be made to fit, there is some grinding and cutting of the rear trailing arm but certainly well worth the effort! Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted March 18, 2015 Share Posted March 18, 2015 Haha i thought he meant Brats ... In that case: ... 1st 2nd ... 3rd: Yes, the third gen Brat was known as "Subaru Suiren" based on the impreza. Sadly Subaru only built a bunch of Prototypes, more info & Photos, ~► Here. ... I uped my rim size to 15". Has anyone done anything to boost breaking performance? I upsized the Wheels on my Subaru "BumbleBeast" years ago, and never had an issue. I bet that yours might have a Mix of old brake fluid, dry flexible hoses, worn pads, worn Master Cylinder, etc... Worth Check it / Fix it before starting to swap parts without finding the Problem first. Kind Regards. 2 Quote Link to comment Share on other sites More sharing options...
1000 Pistes Posted March 19, 2015 Share Posted March 19, 2015 (edited) Simplest upgrade is the ventilated discs and rotors from a Gen2 (1983+). These brakes are mounted on my 1974 DL Sedan: As noted by others the rear disc brakes from turbo Gen 3 models can be made to fit, there is some grinding and cutting of the rear trailing arm but certainly well worth the effort! Your 1974 DL Sedan was originally equipped with all wheel drum brakes???? Edited March 19, 2015 by 1000 Pistes Quote Link to comment Share on other sites More sharing options...
Leeroy Posted March 19, 2015 Share Posted March 19, 2015 Yes 1000 Pistes, from 4 wheel drums to 4 wheel discs. Quote Link to comment Share on other sites More sharing options...
1000 Pistes Posted March 19, 2015 Share Posted March 19, 2015 and still used the same tandem master cylinder without servo??? the master cylinder is 3/4 ???? Quote Link to comment Share on other sites More sharing options...
Leeroy Posted March 20, 2015 Share Posted March 20, 2015 (edited) and still used the same tandem master cylinder without servo??? the master cylinder is 3/4 ???? I upgraded to a master cylinder/booster (servo) from a later Gen 1 wagon. You have to make sure you remove the residual valve in the master cylinder for the rear brake lines and make the hole in the firewall larger to fit everything. If the OP, Brett! upgrades his Brat he can use the original master cylinder/booster, just has to remove the residual valve from the rear brake line in the master cylinder. Edited March 20, 2015 by Leeroy Quote Link to comment Share on other sites More sharing options...
1000 Pistes Posted March 20, 2015 Share Posted March 20, 2015 (edited) what exactly is the residual valve ????? Edited March 20, 2015 by 1000 Pistes Quote Link to comment Share on other sites More sharing options...
Brett! Posted March 20, 2015 Author Share Posted March 20, 2015 First. Thanks for all the info! You guys rock. Second, ya... what is a residual valve? Quote Link to comment Share on other sites More sharing options...
Brett! Posted March 20, 2015 Author Share Posted March 20, 2015 also... does anyone know of a larger rotor size that fits the front / rear stud pattern? Quote Link to comment Share on other sites More sharing options...
1000 Pistes Posted March 20, 2015 Share Posted March 20, 2015 also... does anyone know of a larger rotor size that fits the front / rear stud pattern? Using larger rotor size you must use and the equivalent calipers or caliper adaptors.... Quote Link to comment Share on other sites More sharing options...
Brett! Posted March 20, 2015 Author Share Posted March 20, 2015 By running a larger rotor, I would fabricate a caliper relocation bracket. I recently bought a Terraflex brake package for my Jeep that did the same thing. It reuses the stock caliper and allows you to run a 13.5" rotor instead of a 11" rotor Quote Link to comment Share on other sites More sharing options...
Loyale 2.7 Turbo Posted March 20, 2015 Share Posted March 20, 2015 Beware, in case you go with Bigger Calipers, you'll need a Bigger bore Master Cylinder also. Kind Regards. Quote Link to comment Share on other sites More sharing options...
Leeroy Posted March 21, 2015 Share Posted March 21, 2015 Residual valve is in the master cylinder and is only used for drum brakes:http://www.freeasestudyguides.com/residual-check-valve.html Quote Link to comment Share on other sites More sharing options...
1000 Pistes Posted March 21, 2015 Share Posted March 21, 2015 my 1973 DL 4door Sedan has 4 drums and I think there is not residual valve. there is,only,a brake line spliter... I would like to put a tandem M/C using the equivalent spliter. Quote Link to comment Share on other sites More sharing options...
Leeroy Posted March 21, 2015 Share Posted March 21, 2015 A master cylinder for 4 wheel drums will have two residual valves. Quote Link to comment Share on other sites More sharing options...
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