VT Brake upgrade - Long and Spongy Pedal

[Not_An_Abba_Fan]

You haven't taken the push rod out for any reason? The one that connects to the pedal?

 

[88GreenVN]

on a differnt note while where on about vt brakes, my vr has had the vt brake upgrade with a vx m/c, i notice when i brake they slightly get stuck on, just a lill, it does release after driving a bit but i kick it back with my right foot? ne ideas on what this could be? maybe not bleed properly?
sorry to hi-jack your thread hammatime. jut thought id throw it in there..

Are the sliders on the calipers greased?

 

[HamaTime™]

I haven't, my mechanic might have. But he had someone experienced with VT upgrade's giving him advice. So I don't see why he would have.

 

[hq-racing]

i will check both those things, coz i didint do the brakes myself i dnt know what they done..

 

[88GreenVN]

i will check both those things, coz i didint do the brakes myself i dnt know what they done..

My car is parked just around the corner from you at Old Noarlunga. It has the VT M/C & booster upgrade - your welcome to come have a squizz if you like.

 

[hq-racing]

My car is parked just around the corner from you at Old Noarlunga. It has the VT M/C & booster upgrade - your welcome to come have a squizz if you like.

haha yea right, small world!! yea 2morro would be cool, what time would be cool for you?

 

[HamaTime™]

Double checked a few things, Calipers are definately on correctly, with bleed nipple at top and hose connected at the bottom. I'm going to wear the pads and rotors in for another couple of 100 k's before I start asking the mechanic, probably one of the only people I reallly trust to do a good job.

So I'm still thinking the problem will be up near the booster/Master Cylinder, somehow related to the pushrod of the VS Booster/the shaft.

Anyone have anything to say????

There are plenty of people on the forum who have done exactly the same upgrade as me....surely someone has a fair idea of where the spongy pedal is being caused and how to fix it or diagnose the real probkem is.

 

[Commydoor]

they make a 1" master cylinder for VR/VS that bolt straight on so you dont have to change boosters...if you cant solve it just fit up the old booster and bang one of those on...

 

[HamaTime™]

I've heard about them, but I bought the spacer plate that goes between the Master and Booster from Race Brakes Sydney which solves that problem.....I've still got the stock VS Booster on....and probably going to try and fit up the VT Booster once I get a bracket for it.

 

[Not_An_Abba_Fan]

When you apply the brakes, does the pedal travel a fair way down first then the brakes seem to grab really hard at the last minute?