The Alchemist

iTrader: (19)

So I'm trying to run the correct plumbing to both my Hobbs switch for my secondary fuel pump as well as the line going to the bypass valve and was wondering what size line should be run to both of them.

Is 4mm too small? Since it's not really flowing air volume, it's essentially a signal line, wouldn't the smaller size of the 4mm be better suited?

I have a vacuum manifold distribution block that I'm going to run two seperate lines to each device and was wondering the proper size line to run.

Thanks.

triche

iTrader: (4)

7/32...

The Alchemist

iTrader: (19)

So 7/32 is ~6mm. I'm guessing I should return the 4mm stuff then.

nodrok

I dont believe it matters. pressure is pressure.

Pocket

iTrader: (22)

Ive been using the stock 5/32 stuff

The Alchemist

iTrader: (19)

Cool 5/32 is ~4mm.

99bluefirebird

iTrader: (8)

I used 3mm for the hobbs. Extra thick. All that matters is the wall is thick enough it wont collapse or expand, and it doesnt kink. I used 4.5mm for the race bypass since the piston that opens/closes the valve is pretty big, it needs some flow. Both are extra thick walled tubing though.