Brake line part number for SC (removing proportioning valve - Carrera)

[NoLift911]

Does anyone have the part number for the SC brake line that runs from the M/C to the front coupler? I am removing my proportioning valve on my 84 Carrea and want to use this line in place of the valve.

Thanks -

[Bill Verburg]

Originally Posted by P-Dawger

Does anyone have the part number for the SC brake line that runs from the M/C to the front coupler? I am removing my proportioning valve on my 84 Carrea and want to use this line in place of the valve.

Thanks -

the line that goes from the m/c to the rear brakes on lhd 911 '83 and earlier is 911.355.307.03 but you can't just use it w/o re-plumbing the front too.

Porsche changed the line config from old ('pre 84 style ) to new ('84-89 style), probably just to confuse everyone.

It's easiest to just make up your own replacement line or you can just gut the p/v.

[NoLift911]

Originally Posted by Bill Verburg

the line that goes from the m/c to the rear brakes on lhd 911 '83 and earlier is 911.355.307.03 but you can't just use it w/o re-plumbing the front too.

Porsche changed the line config from old ('pre 84 style ) to new ('84-89 style), probably just to confuse everyone.

It's easiest to just make up your own replacement line or you can just gut the p/v.

Having not taking the P/v off yet is it possible to gut? That was my next question...what's involved?

[Bill Verburg]

Originally Posted by P-Dawger

Having not taking the P/v off yet is it possible to gut? That was my next question...what's involved?

yes, they are easy to gut

this one is off a 964 but yours will be similar

[NoLift911]

Awesome - thanks Bill!!!

[175K911]

Like Bill said, I've always just gutted the ones in my Carreras. Just make sure you put some saran wrap or tin foil under the pv before you loosen the lines so the brake fluid doesn't run out on the painted surfaces.

[Jaskas]

I took the whole valve away and bended the small line part a bit to connect the line w/o the valve. This was in my -87


The parts are in wrong order in the last picture...

[KTL]

Agreed you can simply "stretch" the line to make up the lost length of the pressure-limiting valve. Porsche OEM brake line material is nice & flexible, unlike the cheap storebought pre-flared lengths that are much stiffer.

[TroyN]

Benefit to removing or disabling the valve?