All Things Mk5 > Performance Modifications

Soft Brake Pedal When Stationary

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Shoduchi:
You can also consider contacting @DaveB@Vagbremtechnic or @vRSAlex to see if they can source you a RS3 MC. I really don't think you'll need it but it's your call... I've put my foot to the brakes enough to make my road tyres Contis Sport Contact 5 melt a bit on track but never felt brake fade with EBC Redstuff at the front.

AJP:
Not sure if it applies to the mk6 R, but I'm sure I've read that there's something a bit iffy about fitting the ttrs/rs3 mc to a mk5 gti at least. I think it might be a problem with the servo. So that might need swapping too.

I also read an old thread where Dave was quite hesitant to recommend a certain mc upgrade - I can't remember the exact application but it was quite possibly a ttrs mc in a mk5 - it sounded to me like mix and matching parts might create a setup that in some cases was dangerous.

It'd be great if someone could dig out the thread. I think Dave can be quite hard to get hold of but I'm sure he can advise on the best plan.

I'm sure you know but the 18z is a good 200mm sq bigger in piston area than the standard R caliper. It should still work, but won't be ideal for the stock mc.

Best of luck sorting it pal.

Shoduchi:
Yeah @AJP! You're correct. Not all MC and booster from the RS3 work in the Golf, that's why I recommended contacting who knows what is good and what isn't. For what I recall @DaveB@Vagbremtechnic was trying to order a batch of good RS3 MC for Golfs mk5.

I also know about the lack of MC size for Brembos 18Z but in daily and track use I can't complain about anything. The brakes are powerful and much more progressive than stock or R32 front brakes. I like it a lot and it makes it easier to brake smoothly with a DSG gearbox. With a manual it's much easier to make the last bit of the braking being smooth. With on/off brakes and a DSG it isn't.

th3_f15t:
So I very carefully and thoroughly re-bled my brakes today, the pedal feel is slightly improved but the spongy feeling is still present when stationary although not as bad. I never noticed it when my brakes were stock as I only discovered it during testing my new brakes.

Likely I'll remain on the OE master cylinder for a little while, as it does have a very nice and natural feel when driving, but I will end up upgrading to a larger master cylinder soon because I would rather a more aggressive feel to my brakes. Either RS3 or a Wilwood upgrade, likely the latter as I know a couple of VW Cup cars run them which appeals to me.

jason_rmh:
After fitting r32 front and rear calipers I had the same issue.

After a few attempts at bleeding, the brakes are good, and not so spongy but the pedal does slowly travel when car is stationary and foot pressed on brake pedal.
I've read all sorts of conflicting posts as wether there is a fault in the MC or not.

However, the brakes work fine and passed mot since, so I've not really followed it up.

Jas

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