I wanted to use the original air-filter, but, it turned out there was no room for it. I bought a second hand K&N airfilter kit which was orignally intended for a Peugeot 206 1.6 16v. The diameter of the filter was bigger than the pipe it had to mounted on. So I cut ring of the original airfilter rubber attachement hose, and used it as a spacer to make the K&N filter fit:
![](https://www.gerrelt.nl/alfa/airfilter/engine_with_airfilter.jpg)
Because the hot air of the radiator flows into the engine-bay, the filter will pickup heated air in this position. Not good… But the airfilter kit came with some hoses and an air-scoop.
![](https://www.gerrelt.nl/alfa/airfilter/airfilter_parts.jpg)
I am going to use these to pickup cold air from under the car and direct it to the airfilter. At least it will then receive cold air when driving. I hope the hot air won’t cause a problem when standing still.
edit 16-09-2006:I cleaned the airfilter and reprayed it with filter-oil. I made a bracket out of a big piece of alumium to attach the air-intake tube to. I also found a place for the “cool” air hose. This hose will be connected to an airscoop under the car.
![](https://www.gerrelt.nl/alfa/airfilter/cleaned_and_with_ducting.jpg)
The hose will direct cold air to the filter while driving. If the hot air in the engine compartment will give troubles when standing still, I will make a shield to seperate te filter from the hot air.
edit 23-09-2006: I fitted the airscoop under the car:
![](https://www.gerrelt.nl/alfa/airfilter/airscoop.jpg)
It looks like it’s only held by one tie-wrap…but, have no fear, it’s properly held with lots of tie-wraps 😉 . You can’t see the tie-wraps because they are attached to the top of the scoop and then around the rear gearbox fork. I cut an angular piece of the front of the scoop so that the opening faces the driving-air head on.
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