brake proportioning valve questions

Anonymous · Post by **Anonymous** » Mon Jul 17, 06 8:50 pm

i have the factory bendix 4 pot caliper set up on my charger but the back end overbrakes when applying the brakes hard, so-
is the valve serviceable? mine has a big nut at the bottom of it,
are there replacements available?
has anyone succesfully fitted one off of another car/van? (ie sierra/transit)
i don`t really want to fit a big adjustable one like they do on the rally cars
cheers

Dave-R · Post by **Dave-R** » Mon Jul 17, 06 9:36 pm

You are thinking of the ones they adjust while racing. You don't need one of those big things.
The adjustable ones from US suppliers are not big. They are just a couple of inches long by about an inch square and you fit them under the chassis out of sight. You just adjust it with trial and error until it is right.

The stock factory proportioning valve is not very accurate. They only used two or three different ones for the whole model range. This is Chrysler remember.

Any changes in front/rear weight or tyre widths (or even tyre compounds) and the stock ones are even more out of whack. In fact there is probably nothing wrong with your valve. It is just that the car has changed.

Fit an adjustable and that will fix it.

http://store.summitracing.com/partdetai ... toview=sku

Anonymous · Post by **Anonymous** » Mon Jul 17, 06 9:56 pm

that was aquick reply dave!
does it fit straight on in place of the original or do i need to fit adapters to fit my pipes?

Dave-R · Post by **Dave-R** » Tue Jul 18, 06 9:38 am

Leave the original valve in place if you want.

Cut the brake line that runs to the rear wheels from the original valve somewhere on the front chassis leg. You will need a flare tool to make the cut ends up. Then screw it together. A couple of long self tappers into the chassis holds it in place. Job done.

Mount it so that the adjusting knob hangs down just below the chassis leg so you can get your hand under to adjust it between tests.

Anonymous · Post by **Anonymous** » Tue Jul 18, 06 9:42 pm

just ordered the valve from summit, they charged me $23 just to handle it

, then $56 to ship it on top!

the valve was only $36

so it will cost over a oner when it turns up
i know i am a tight welshman but this takes the pee

Dave-R · Post by **Dave-R** » Tue Jul 18, 06 9:46 pm

I only order from Summit when I have a large or expensive order. Usually both. I only gave you that link as an illustration of what you need!

The shipping looks expensive. It must be coming air mail so it will be here quick at least.