Hi Guys

Nearly finished the Retro Conversion of my V12 'Cherry Blossom' from ABS to Vacuum Booster and am about to connect the Reservoir

Not sure what sort of Tubing I should use for this

I've got some reinforced Plastic Tubing and wonder if this would be Suitable or would it melt in the Heat

Any Ideas? See Photo:

 

The original is a cloth reinforced rubber hose. There are several different types of rubber used in hose, and the general rule with rubber hose is that anything suitable for petroleum products (gasoline, transmission fluid, oil etc) is unsuitable for water or coolant and vice versa. Brake fluid is more chemically similar to coolant than to oils.

There are several different types of material that those "plastic" hoses could be made from, you'd have to check a material compatibility table. Typically I have seen that type of hose made from PVC, and that is rated at either "fair" or "severe effect" depending on the glycol. Brake fluid is in the glycol family, so it probably would not be a good hose to use.

You're looking for EPDM rubber material. The fluorcarbons (Viton etc) are completely unsuitable.

 

OB
Car Builder Solutions in Kent will have the hose you need. Normal plastic (such as in your photo) or even rubber hose will be eaten by the fluid with disastrous consequences. The actual OEM hose has a step-down connector in the middle, the spigots on the reservoir are bigger than those on the master cylinder! It also has metal sections, which you can do away with providing you cable tie the reservoir feeds so they cannot chafe. See if you have these, if not you will need hose flexible enough to do both, or get some step down connectors, you need two.

 

Hi Greg

Car Builder Solutions, what a find!

They have everything you'll ever need!

Apart from the Special Brake Pipe, would I need a proportioning valve or would I be good to go just as it is?

 

No nothing else, just good to go as is. I fitted an twin outlet aftermarket job from them as the OEM rservoir leaks all over the place. I had to use a step-down joiner to get the hoses right on each end, but maybe the aftermarket outlets were a touch bigger than the OEM ones.