Vauxhall Owners Forum banner

1 - 20 of 45 Posts

·
Registered
Joined
·
10,061 Posts
Discussion Starter #1
Picked up the discs from Dave at V-tuning yesterday morning, (also bumped into Tom Williams while I was up there) and after a few hours all was fitted.

I only had to time to quickly bleed the front brakes. After a quick test drive I found the pedal very spongey, or at least a lot of travel on the pedal. I think it needs a proper go at bleeding including the rear brakes.

Anyone got any tips for getting a firm feel to the pedal, or is this a sympton of bedding in brakes?

I'll get some pics up when I can be bothered.
 

·
Registered
Joined
·
27,217 Posts
tyr bleeding them out again! spongy = air in the system:(
although pedal travel will be further due to larger pistons!
 

·
Registered
Joined
·
10,061 Posts
Discussion Starter #4
Well maybe spongey is not the right word, a lot of pedal travel would be more accurate.

That's what I suspected Lee.

My bleeding technique is to have the engine running and tightening the nipple while my assistant keeps the pedal depressed.
 

·
Registered
Joined
·
13,676 Posts
Ed go and get one of those eazibleed things, they are so easy to use and it will be done right, you know you not suposed to push the pedal all the way to the floor as it can upset the mc seals, i found this out the expensive way:rolleyes: :mad:
 

·
Registered
Joined
·
3,963 Posts
The V6 calipers have larger cylinders in them aparantly. So more fluid needs to flow to do the same piston travel.

You can adjust the pedal to account for this so that there is less 'slack' to take up in the system.
 

·
Registered
Joined
·
2,851 Posts
What about the servo, is that bigger?
I had ATE 16v calipers on my Nova GTE, they felt fine.
On my old Nova SR, they were crap, becaseu the GTE has a bigger brake servo than the Nova SR.

But yes, bleed the whole system.
I bought one of theose pressue kits from Halfords for about £17, very easy to use. Get spare tyre, plug it into the hose/bottle and then plug into the top of the brake resvour. Then you run round to each caliper and turn on/off like a tap and watch all that old brake fluid with air bubbles come whooshing out.
 

·
Registered
Joined
·
10,061 Posts
Discussion Starter #8
you know you not suposed to push the pedal all the way to the floor as it can upset the mc seals, i found this out the expensive way
No I didn't know that:eek: That device you mentioned Topbuzz sounds good.

Is it posible to adjust the actual brake pedal and take out the slack?
 

·
Registered
Joined
·
10,061 Posts
Discussion Starter #12
Ok. Well tomorrow I'll give the whole system a proper bleed (hopefully I haven't done the seals in already), and try to take up the slack in the pedal. A mechanic mate of mine told me I should have the engine running while I bleed the brakes, but on Topbuzz site it says to make sure it's off. What should I do?

Jamie, is that you and Lee in this months Fast Car?
 

·
Registered
Joined
·
13,676 Posts
if your car has abs it best to do it with the engine running, i was told this by and ex vx mechanic.

and yes thats me a nd lee in FC:)
 

·
Registered
Joined
·
10,061 Posts
Discussion Starter #14
I'm gonna have another crack at the bleeding today; can I just verify that I should have the engine running, and have the pedal depressed as I do up the nipples?
 

·
Registered
Joined
·
10,061 Posts
Discussion Starter #16
The brake hose just screws into the back of the Calliper, very simple. Straight swap.
 

·
Registered
Joined
·
8,862 Posts
The hose bolts on to the caliper, its a funny bolt with a hole in the middle.
 

·
Registered
Joined
·
12,581 Posts
Interesting, so how do you get it off the caliper? Small 8mm spanner or something on the end of the hose?

I always wondered if all the fluid ran out when you took of a caliper.
 

·
Registered
Joined
·
10,061 Posts
Discussion Starter #19
Clamp the pipe off with a, er clamp, and unscrew the 11mm bolt. It couldn't be easier. You lose a little bit of fluid but hardly any. Bleeding is hardest part, hence my original question:

I'm gonna have another crack at the bleeding today; can I just verify that I should have the engine running, and have the pedal depressed as I do up the nipples?
:D
 

·
Registered
Joined
·
10,061 Posts
Discussion Starter #20
I would have thought changing a calliper should be child's play to someone who has changed an engine:p
 
1 - 20 of 45 Posts
Top