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Master cylinder question
jigga - October 27th, 2016 at 11:26 PM

Hey!

I have 4 wheel disc brakes on my car and the brakes are spongy. It's been recommended i get a better master cylinder. What does every one use with 4 wheel discs?

vw54 - October 28th, 2016 at 06:22 AM

what brands of brakes are they

karmann141 - October 28th, 2016 at 09:54 AM

As above - more info needed.

Bus, Bug etc - year model. ? standard MC etc

jigga - October 29th, 2016 at 09:08 PM

It's a bug... Not sure on brakes but I think they are a cheap brake kit. Possibly empi.

vw54 - October 30th, 2016 at 05:29 PM

you said the magic word EMPI pay for what you get shitttttttttttttttt



you might be able to put a kombi M/C on it to improve 22mm bore try the first other wise throw the EMPI away and start again

where are you located you may need to go to a decent VW shop for advice

psimitar - October 30th, 2016 at 10:16 PM

You have to fit pretty big pistons claipers for the std MC to run out of travel. Those upgraded MC's are a nice marketing ploy.

As for the EMPI rear disc kit, stick your head under the rear end and whilst a mate presses on the brakes look at the caliper bracket. This EMPI rears have been renowned for the caliper bracket being so flimsy it bends under braking so gives a similar feel to air in the brakes. Otherwise, re-bleed the brakes at the rear. If still having issues then clamp the 2 flexi lines at ther ear and if the pedal is hard then defo an air leak or movement in those rears.

vw54 - October 31st, 2016 at 07:06 AM

Quote:

EMPI rears have been renowned for the caliper bracket being so flimsy it bends under braking so gives a similar feel to air in the brakes.


yes easy way to check the brackets are very flimsy

jigga - November 3rd, 2016 at 11:51 PM

Thanks gents. I'll try that.not 100% if they are empi. What's the next best brake setup?

Birdman - November 4th, 2016 at 11:32 AM

Probably a falcon rear disc setup
Or go back to VW and chuck some big type 3 drums on the back.

karmann141 - November 4th, 2016 at 06:48 PM

If you're IRS then NA Porsche 944 is the best rear factory disc setup you can get with a handbrake that works ( easy conversion and easily engineered/complianced)

Next best I agree with Birdman Type 3 drums better than most aftermarket discs.

psimitar - November 5th, 2016 at 06:48 PM

But depending what you have on the front you have to be careful with better rear brakes as you are changing the brake bias further to the rear. Most of the rear disc kits are made so they complement the original VW discs at the front.

If however you have the heavier subaru engine in the rear then better rear brakes should complement things well as a heavier rear end requires more rear braking force. Hence why utes/vans etc have a biasing valve that increases rear braking the heavier the load is :)