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Master cylinder question

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jigga Officially Full-On Dubber

249 posts · joined Oct 2007 ·

#1031078
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?

karmann141 Wolfsburg Wizard

485 posts · joined Aug 2009 ·

#1031088
As above - more info needed.

Bus, Bug etc - year model. ? standard MC etc
1961 K Ghia - Porsche 5 sp, EJ20T, Brembo's, Dble A arm susp
1974 L Bug - Porsche 944 brakes, Boxster 16's
1974 Bay Camper - EJ20, twin radiators, Boxster 16x7's
Half Beetle trailer with Boxster 16x7's
2011 Tiguan TDI 4Motion
2010 LR Discovery 4 TDV

jigga Officially Full-On Dubber

249 posts · joined Oct 2007 ·

#1031134
It's a bug... Not sure on brakes but I think they are a cheap brake kit. Possibly empi.

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#1031146
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
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 ·

#1031155
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.
madness is in the eye of the beholder 👍

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#1031167
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
I read it on FACEBOOK so it must be true


http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630


http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099


http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603


http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409

jigga Officially Full-On Dubber

249 posts · joined Oct 2007 ·

#1031265
Thanks gents. I'll try that.not 100% if they are empi. What's the next best brake setup?

Birdman Wolfsburg Wizard

428 posts · joined May 2010 ·

#1031274
Probably a falcon rear disc setup
Or go back to VW and chuck some big type 3 drums on the back.

karmann141 Wolfsburg Wizard

485 posts · joined Aug 2009 ·

#1031280
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.
1961 K Ghia - Porsche 5 sp, EJ20T, Brembo's, Dble A arm susp
1974 L Bug - Porsche 944 brakes, Boxster 16's
1974 Bay Camper - EJ20, twin radiators, Boxster 16x7's
Half Beetle trailer with Boxster 16x7's
2011 Tiguan TDI 4Motion
2010 LR Discovery 4 TDV

psimitar Son of Jim - Creator of Good

2,506 posts · joined Jan 2009 ·

#1031303
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 🙂
madness is in the eye of the beholder 👍