Air Duct Gone (FIXED)

[decgraham]

Hi All,

Well the old air duct has given up the ghost. Not bad as it was last replaced in 2009 Can anyone point me in the direction of a link or a DIY post. The last time it was replaced it was done by OPC Kuwait.

Any help greatly appreciated.

ATB

 

[911UK]

is that the heater duct ?

 

[decgraham]

Yes I believe it is the heater duct. It's connected to the rear fan and the fan housing that the alternator is attached to. I suppose the alternator fan blows air through the duct into the rear blower fan? Or is it the other way round and used to keep things cool?

ATB

 

[911UK]

@decgraham about time you fitted the heater duct bypass, run that on my 993 in England and works fine



DIY is really simple

Buy new fan duct.

1. Remove heater/blower motor ducting.
2. Three screws hold duct onto top/back area of fan shroud.
3. You'll see a channel and 3tabs that slip into place at the back of fan shroud.
4. Align holes and replace 3 bolts.
5. Replace removed ducting.

A 2 on a 10 scale of difficultly.

 

[decgraham]

Great, many thanks

ATB

 

[911UK]

if youre going to fir the RS duct delete, you'll need this

 

[decgraham]

Thanks again for the information, much appreciated. However, I'm a bit of a traditionalists so I'll keep original. I even have the original 16" wheels on the car as that's how it came from the factory.

ATB

 

[ToreB]

Very common issue. Two part variants exist, depending on Varioram or not. Discussed several places: https://rennlist.com/forums/993-forum/1350763-cracked-plastic-engine-component-how-serious.html
Please be aware that if you delete the engine bay fan you will run into problems using the two main ventilation blower fans. The CCU detects the non-op fan and will shut down the main blowers to avoid exhaust fumes into the cabin. The rear blower also has an important role in engine cooling.
Cheers,
Tore

 

[Paulb33]

Warning: an easy job that is easily messed up:

1. The thread into the fan shroud gets stripped (its very soft). 2. Bolts fall into the engine.

Please don't ask how I know this.

 

[Heuer]

Simple job although getting to the rightmost screw can be a challenge. No need to remove the screws, just loosen them and the duct will pull out. Slide new one in and tighten.

 

[PeterHoward]

Check the part number from your old one as you can not be sure of the one you need by just "Varioram and non Varioram".

 

[Heuer]

Varioram version:

 

[PeterHoward]

Not always!

 

[decgraham]

Hi All,

Job done must be the easiest job I've ever done on my car. It took 15 minutes. Slackened off the 3 bolts removed the A/C pipes clip and pulled out the old one. Slid the new one in, juggled it around until I got the rear clips in and the bolt holes lined up. I then pushed it onto the air box, it just clipped straight in. Tightened everything up and ran the car, no air leaks so it's a good un

ATB

 

[decgraham]

Varioram version:

The part number on that duct is the same as was on my original which was fitted by OPC Kuwait. The replacement is the same. My car is non Varioram.

ATB

Varioram version: