Vacuum modulator tube

**bigyellataxi** · 17-01-2014 20:10

Originally Posted by blackpopracing

Been playing with fitting sizes, so will have to wait till they are delivered. Best price for tubing is B&Q funnily enough!
1 metre of 6mm O.D x 1mm wall brass tube is approx £8 so will get some of that & use short bits of silicone tube for connections.

I'm in work tomorrow morning Mark.

**fad15** · 17-01-2014 20:16

Originally Posted by blackpopracing

1 metre of 6mm O.D x 1mm wall brass tube is approx £8

That stuff does not bend very well, tends to crack. If its for straight bits then fine. I use brake pipe, bends and fits the rubbers.

**blackpopracing** · 17-01-2014 21:45

Got the buts off fleabay Guy, nice n cheap

I did look on the other site to see if they did the bits but they didn't.
I do need to pay you for the Aeroquip hose tho - sorry! been madness at work this week

Gerry, I thought brass would be ok? got a mandrel bender for it and thought I could heat it to anneal it first? I don't need sharp bends just needs to follow the box/bellhousing angle and bellhousing/inlet angle, silicone hose after that both ends.

Brake pipe (got a load here) is 2mm smaller O.D than the fittings both ends (modulator and inlet fittings)

**blackpopracing** · 17-01-2014 23:03

Just tried bending the brass tube and got a lovely 90 degree bend with no issues or cracking

**Mad Mark** · 18-01-2014 08:34

Good result! Mine is rubber tube but with a wall thickness the same as the bore. I can't measure it as the car's not here. Works fine but I bet yours will look soooo much better!

**fad15** · 18-01-2014 09:37

Originally Posted by blackpopracing

Just tried bending the brass tube and got a lovely 90 degree bend with no issues or cracking

I stand corrected. good to know.

**bigyellataxi** · 18-01-2014 13:32

6mm x 1mm bundy tube in stock at £3 per metre, bendable by hand or with a normal brake pipe bender...

**blackpopracing** · 18-01-2014 20:46

^^^^Doh! that would have been ideal.

I searched all over the net for tubing, could not find anything (except copper) longer than 600-900mm except the brass tube in B&Q.

Never mind, the brass looks nice n shiny

This is how it looked after bending up;

and fitted to gearbox;

and plumbed to inlet manifold.

Still need to T into this bit for the vacuum gauge.