911Jetta

An RS-type heater duct (blower motor bypass) shouldn't cost so much...

Is there a much cheaper alternative? Would silicone hoses work?

Text from a racing supply catalog:
These Silicone Turbo Hoses are the same construction as our Silicone Coolant Hoses, but in sizes appropriate for turbo feed and intake applications. Working pressure varies by size (the largest size, 4 inch diameter, has the lowest working pressure at 21psi / 1.5 bar for a straight section). Temperature range for all sizes is -58°F to 356°F. Overall length of Hump Hoses is approximately 3 inches. Overall length of reducers is 4 inches. Elbows and reducing elbows have approximately 4 inch legs. Straight hoses are one meter long.

http://www.pegasusautoracing.com/gro...upID=TURBOHOSE

mpeters951

I think you'd have a bitch of a time keeping it mounted at the shroud end and the bend/kink wouldn't be pretty. I got mine for relatively cheap; IIRC ~ $200 for the OE Porsche RS part. I think it was from Patrick Motorsport.

I'd stick with the real part and avoid the silicone route. Don't most silicone enhancements ultimately turn out wrong

964RS

Here is a picture from my car...

/Anders

axl911

Use one of those cheap $15 3 inches flexible intake hose they sell at PepBoys. Press fit it into the alternator duct end. At the heater pipe end, use 1/4 inch foam to make a snug fit.

christallon

I find Anders solution quite acceptable. I do like the RS plastic piece a little better though.

ThomasC2

Use something that you can fit easily and looks good enough for you. There's no demand for special materials, the heat and air preassure are nothing special, so most items you find in car parts stores, DIY, i.e would work.

ThomasC2

Use something that you can fit easily and looks good enough for you. There's no demand for special materials, the heat and air preassure are nothing special, so most items you find in car parts stores, DIY, i.e would work.