Just a quickie. its a sierra 1.6 f plate by the way...

For sva you need seperate brake circuits for pairs of wheels, does that mean the master cylinder needs to have two 'barrels', or just multiple outlets from one barrel/cylinder?

Also theres a device in the rear pipe that i thiink modifies the brake pressure to the rear brakes, does this have to go into the new one at the same angle it came out at or will any position do?

thanx in advanx..!

MK supplied me with a complete brake pipe kit. In the kit there was no provision for a rear brake bias device so I'm assuming I won't need one.

The MK kit is designed to work off the sierra master cylinder. Mine has 3 outlets, the one nearest the brake pedal goes to the rear where it is split by way of a T piece to each rear drum.

At the front there is a pipe from each of the two remaining outlets, one to each front disk brake.

MK also supplied an in-line pressure switch which sits in the rear circuit and operates the brake lights when there is an increase in pressure, i.e. when you apply the brakes.

Hope this helps.

Russell

quote:

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Originally posted by JoelP
...does that mean the master cylinder needs to have two 'barrels', or just multiple outlets from one barrel/cylinder?

Also theres a device in the rear pipe that i thiink modifies the brake pressure to the rear brakes, does this have to go into the new one at the same angle it came out at or will any position do?

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Dick,

"...to is the 'G' valve, or decel-sensing rear brake pressure limiter. Please don't use this on ANY kit-car."

Sorry to put you on the spot here but, why not?

Thanks

ATB

Simon

Russell,

I'm 99% sure you will need a bias valve for the SVA test (other MK builders have fitted one: Bob, Conrod Kid, Donut)- if not the brakes can lock in the wrong order (though I can't remember which is the correct order- I'm pretty sure it's rears first then fronts a fraction later) . Otherwise you are likely to spiiiiiin

What you want is the bias valve from a Fiat Uno. It's adjustable with a screw in top. It'll need setting up but with any luck you can do this in the test!

HTH,

James

P.S. Everything I've just said may well be bollox- I anticipate being corrected!

The fronts do the work so they take most brake effort. The standard brakes don't need a valve as the master cylinder and the slave cylinder bore take care of the brake pressure difference. The G valve doesn't come into effect until the nose of the car dives and the angle changes. In the ideal world the brakes wouldn't lock at all, hence the invention of abs, to prevent loss of control. If you do need a pressure reduction to the rear the Golf or Fiat valve has been recommended on here many times.

yours, Pete.

Pete,

That's good news then:-)

Cheers

Simon

We've SAV'd two Mk indy Blades and neither had a bias valve. The brakes passed the test very easily with approximately 66% braking effort for the front wheels.

Recently taken car on track and locked wheels while braking too late for corner and the fronts locked but not the backs, which IMHO is correct because if the backs lock wouldn't that cause a spin?

Cheers

Jim

I think yr right, fronts first to lock. that what f1 cars do anyway....

thanx a lot for all the help fellas, that clears it up nicely! ta

quote:

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Originally posted by Simon
"Please don't use this on ANY kit-car."
Sorry to put you on the spot here but, why not?

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