S6 AAN Intake hose anti-collapse rings

[smogthemog]

I have recently fitted anti-collapse rings to my 97 S6 AAN MAF to Turbo intake hose and just wanted to share with you the circumference sizes of the pieces of stainless steel wire needed.

The sizes, from top to bottom are:
1) 262.67mm
2) 251.36mm
3) 243.50mm
4) 241.93mm
5) 235.65mm

Cut 5 bits of rod/wire to this length, bend and TIG together to form the 5x rings you need.
The rings I made where round shaped by hand, where made from 2.5mm TIG welding filler rod and TIG welded together with the TIG set to 15Amps.
Each ring fitted in quite easily by removing the hose and heating the complete thing in HOT water and adding a little washing up liquid to the equation.
When you remove the hose you will clearly see which rubber rings they fit into. They don't go in the first three rings at the top!! they are solid, they fit into the next 5 down

[Greg_S]

Good little mod, if i remember right the ABY hoses have a set of rings, or a spiral in the pipes already

[Animal Mother]

Forgive my ignorance, why is this mod needed? Is this just if you have an uprated turbo?

[Knight Rider S4]

When the turbo draws air in , It will stop the pipe collapsing as much... less restriction of air flow

[Animal Mother]

When the turbo draws air in , It will stop the pipe collapsing as much... less restriction of air flow

How do you know the hose collapses?

[Knight Rider S4]

Not sure what you mean ..you been drinking again?

[Acidburn]

Think he means how do you know the pipe collapses?

Take it someone has watched the car on the rollers or felt the hose and seen it collapse at some point in time and came up with this mod to counteract it.

[Animal Mother]

Think he means how do you know the pipe collapses?

Take it someone has watched the car on the rollers or felt the hose and seen it collapse at some point in time and came up with this mod to counteract it.

BINGO!
My thinking exactly.
It would take huge vacuum forces to collapse the hose I reckon, and seeing as you have what looks like a standard turbo and a free flow filter you would have no collapse.

[smogthemog]

I also have 1.4BAR of boost and it was just advised to me to do the mod so I did
And I shared it with you lot

The pipe has been seen to partially collapse under large amounts of boost with a standard air filter set up (which is rather restrictive in it's unmodified form I hasten to add!!) So as mentioned, the mod was advised, even though I have a cone filter fitted, I still thought I would do it for piece of mind