Adjusting rear brake bias

[jcs356]

Hi folks,

I've done a search on this, and come up with a relevant post from back in 2003 - but it's closed and I can't tag onto the end of it. So here is a new post.
http://www.seatcupra.net/forums/showthread.php?t=23823&highlight=brake+bias

Since my Ibiza went on a diet, it has always had a tendency to lock up at the rear under heavy braking. Very evident from track days - take a look at F2 Stu's in car video from Lydden Hill - I try to confuse him by throwing up a smokescreen but it doesn't work.

Problem is that now the roads are a lot greasier, it is getting a bit more dangerous - a couple of times I've nearly lost the back end whilst braking so I'd like to sort this out.

Anyway, I know that Badger Bill has got an in-car adjustable system for use when racing. A bit OTT for my requirements. However, from that original thread, it implies there is something that can be fiddled with to slacken off the back brakes a bit and stop this happening.

So my question is, where is this bias valve, what does it look like, and how do I adjust it.

Thanks.

 

[jcs356]

Oh, should have added, its a 1994 Ibiza GTi without ABS.

 

[m0rk]

located on the rear beam.... adjusted with a screw

 

[F2 Stu]

Since my Ibiza went on a diet, it has always had a tendency to lock up at the rear under heavy braking. Very evident from track days - take a look at F2 Stu's in car video from Lydden Hill - I try to confuse him by throwing up a smokescreen but it doesn't work.

.

I'm easily confused me

Thinking of inline balance valves for mine as I have no load dependant valve to adjust

 

[WeeJase]

left hand side of rear beam.when i did mine(with ABS) i just undid it,let it find its new postion and then did it back up.
if you have a haynes manual its in there.

 

[jcs356]

Thanks folks. I stupidly didn't think of looking in Haynes - and yes, it's all in there.

 

[WeeJase]

must be the name