Hose From Rocker Cover On 8v To Brake Master Cyl?

[Longfield 0]

On my 8v I've got a hose that runs from the inlet manifold to the brake master cylinder. My question is... what's this hose for as looking at other 8v's I can't see this hose at all?

 

PS: Ignore my title as the hose is not from the rocker cover!

Edited October 22, 2008 by Longfield

[welshpug 1,657]

its the Servo vacuum hose.

[Longfield 0]

so can the servo vacum hose run to different locations or have others just hidden it well?

[jackherer 543]

I always replace that hose when fitting an Mi16 as it looks awful draped over the rocker cover. IMO it doesn't look as bad on an 8V but you could still improve it. Either replace it totally with a longer hose you can route more neatly or cut it and extend it with some solid pipe to change the route.

[Chris_Mi 6]

Presumably this hose has a purpose -creating a vacuum from the inlet manifold to the brake servo? Is this why braking is better with the engine running? If so, how will a gaping hole affect performance, because my rubber braided hose is slowly melting onto the 16v cylinderhead !

 

I've seen s/steel braided types. Anyone know who supplies these, and are they OTT?

 

 

Cheers

 

Chris

[jackherer 543]

Presumably this hose has a purpose -creating a vacuum from the inlet manifold to the brake servo? Is this why braking is better with the engine running?

 

Yes

 

If so, how will a gaping hole affect performance, because my rubber braided hose is slowly melting onto the 16v cylinderhead !

 

It'll be like the engine isn't running

 

You'll still be able to stop as well as before but it will require much greater pedal effort.

 

Also the engine idle may deteriorate depending on the engine management, and it will be breathing unfiltered air through the leak.

 

I've seen s/steel braided types. Anyone know who supplies these, and are they OTT?

 

Any hydraulic hose supplier will be able to supply them. The only requirement for this hose is that it doesn't collapse under vacuum.