Under IVA regs, can you use a proportioning valve to set the front / rear brake balance, and then fix it once set? If you can't use them, how are people now setting their brake balance? I have sierra discs front and rear. If I can use one, has anyone used one of these, look like a good price?

http://compbrake.co.uk/shop/product_info.php?products_id=3613

Cheers

Adrian

banned under SVA and IVA im afraid.

Any ideas how I can adjust brake balance then?

Cheers

Adrian

Maybe retrofit after IVA. Sometimes the permanent pins that people fit for SVA can fall out too. It is one of those things where you have to be careful though (brakes and steering are rather important).

As an aside how do these type work? Do they just limit the maximum pressure to the rear. They don't have enough volume to do anything more than this do they?

A bias bar works on a different principle in that you get a fixed ratio front to rear and it is linear across the range of brake pedal pressures.

Matt

With full sierra gear you should have acceptable balance anyway.

Britishtrident is very knowledgeable in the area of brake balance.

Its jut like a production car, you cannot adjust proportion, just fit a different preset valve.
Electronic forms of automatic adjustment is allowed (EBD) but not exactly within the relms of the average person.
Darren

Few different ways of doing it the tradditional way was fit smaller wheel cylinders.

Find your donor for example Sierra 1.8 on the Brakes International Online Shop find the exact style and bore of wheel cylinders fitted, and then look for a similar style but smaller bore cylinder from another model for example Escort Mk3 1.3 saloon

I have discs all round...

OK! change the calipers to smaller units. I don't know about the UK, but here in North America when they started using discs on the front with drums on the rear manufactureres put a small inline proportioning valve in the rear brake line to prevent rear wheel lockup. You might find one in a breakers.

Best solution is probably a valve off a drum braked Mk1 Mondeo it just screws into the master cylinder port ---- only fly in the ointment is the connection to the rear brake pipe is a non-standard size --- easy solution just cut the pipe at the scrapies and salvage the connector. After IVA you can test the brakes without the valve and see what you prefer.