73 air filter help. Check it out. Cool!
 

73 air filter help. Check it out. Cool! Where can I get these for my PMOs? They have to exist. Any of you old school guys know.... ?????

http://forums.pelicanparts.com/uploa...1733999669.jpg

Have seen this style at a french VW and Porsche shop. Various models available. Guess you have to modify them to fit a 911, but should be not too difficult.

https://www.dream-machine.fr/chrome-air-filter-2bbl-carb.html

Yeah. This are nice, but I dont have skills to modify.

It truly amazes me what some people think is cool. :confused:


Slides with proper air filters IMHO..

http://forums.pelicanparts.com/uploa...1734115699.JPG

Those are great too, but the old school vintage of the others are great looking.

Just go buy six deep fryer baskets.

That cracked me up.... :D. I have a vision for my backdate. Those in all black.

I remember the thread where the guy cooked his dinner (in a foil wrap) on the exhaust of his 911. Perhaps there's something to be explored here as well!

Lol.

I would be interested in some dyno comparisons of those foam air cleaners vs the K&N, then compared to open carbs. Back in the day there was concern that the foam was more restrictive than the cheese cloth.

Anyone with actual data?

I made these just for fun. Markhttp://forums.pelicanparts.com/uploa...1735221516.jpg

http://forums.pelicanparts.com/uploa...1735331103.jpg
http://forums.pelicanparts.com/uploa...1735331103.jpg


http://forums.pelicanparts.com/uploa...1735330467.png

http://forums.pelicanparts.com/uploa...1735330467.png

http://forums.pelicanparts.com/uploa...1735330467.jpg

http://forums.pelicanparts.com/uploa...1735330467.jpg

Those are some serious Hp gains. Did some quick math and it ranges from somewhere around 3% to 8%. No other tuning parameters changes between those two graphs? Like adding several degrees of timing.

Hypothesis of what's driving the gains?

Open stacks allow more air. Possibly running a tad lean then and when the filters were added it lessened the air and richened the mixture to the sweet spot.