K&N Filters

It has been very well established over and over and over that the air flow improvement is nearly non existent and then only when freshly cleaned. After a short period a paper filter out flows them and the paper filter does a superior job of filtering.

Don't drink the koolaid.

 

There was a mining company that did drink the koolaid thinking they would save millions on air filter replacement. They ended up rebuilding their engines and switching back to paper filters. D'oh!

 

11 years ago Mike C and I spent an afternoon on the dyno looking at this. The K&N gives you about 2-4 hp more. Call it 3hp increase.

In other words it is so small that just being half a tank of gas lighter is a better improvement.

 

Dr. Tommy, but that's 3hp you didn't have before, I'll take that.

 

I use one on my 328... easy to clean and re oil... voila... don't know about any HP increase, but it seemed at the time a better filter.

 

3 hp under the most ideal conditions. After warm up and the engine is sucking in hot air instead of cooler denser air, you could end up negative. Reminds me of a young kid installing a big rectal spoiler on his beat up front wheel drive Honda Civic.

 

One of the car magazines, perhaps Hot Rod or Car Craft, a few years ago did a dyno test on K&N filters. I remember they tested 12 vehicles (trucks, suv's, muscle cars), with fresh name brand filters, then, the only change they did was change to the K&N. Exactly half of the vehicles with the K&N filter installed, had LESS horsepower on the dyno pull. I ran them for a while years ago, but as one of the posts pointed out, the K&N gets so dirty, so quickly! At that point, they can not be very efficient, and it's a mess cleaning them.

 

Here is the thread. I don't remember if the filter was new or just one I had been using for a while.

http://www.ferrarichat.com/forum/technical-q-sponsored-algar-ferrari/88743-dyno-s-weekend-308-intake-tb-mod.html

 

Can anyone recommend a "Paper" filter?

 

Hi Friends , warning ,i had KN filter in my AMG E 55 , after 25000Km i ispected it to clean and all the rubber gasket was destroided.I will come back to paper filter!

 

Our air boxes were designed by Ferrari in the day for a Baldwin.
I have the box lid around here, somewhere..

You can order Baldwin in quantity at any heavy truck service place.
Our upside down oil filter is a B253.

Do you have the air filter number handy, Brian??

Let me know Mark, I can go down and buy a box, and get them to you.....

 

Tex,

That would be Great.

I'll PM you.

 

stay away from the K&N or such types: paper is best and if you need to change more often then do so....now close the thread

 

My car came to me with K&N and I switched back to the airbox. K&N looked cool and sounded great but the hot air ingestion caused problems when idling on hot SoCal days sitting in a traffic jam on the 5. I would consider switching back just for the beautiful sucking sound but only if it was wintertime and I was going to some redneck car show to get someone to say "looky at those 4 carbs....what is this thing?".

 

For my 1977 GT4 the Baldwin air filter is PA2094, fits GTB/S as well.

Baldwin Filter: , Oil Filters, Air Filters, Fuel Filters: Stocking factory authorized distributor of Baldwin Filters

 

Is there a Baldwin air filter for the injected 308?

 

Only for the carb 308.

 

I have K&N in the 308QV. The rubber gasket fell apart after like 5 years. K&N replaced it for free under warranty.

 

Go with Baldwin good fit, quality, function, and price for air and oil filters, I use ZORO supply for a vendor, good price and fast.
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I am lost

I got the Baldwin oil filters.

What air filter should I buy for an Fi car '81?

 

I've got K&N oiled Airfilters in use for all my classic cars and I am very happy with them - for many years and many kilometers. For the carbed 308 as for the injected 3.2 Mondial as for the turbocharged 208 GTB as for some Mercedes and other brands.
For the Oilfilters I only use the FRAM Filters (for the F-Cars) because of their nice orange color - just kidding, they have been original for the euro spec cars and that's the reason, why I use them.

 

I believe factory AIR filter for carb cars is a UFI filter.

 

Well... in independent tests over and over K&N air filters have been proven to filter less effectively than paper filters. They let in more fine particulates (thick dust), which absolutely increases engine wear. They don't make more power than paper filters when clean... so the only advantage is cost, because you can re-oil a K&N versus installing a new paper filter. I'd rather have the better filtering of a paper filter than save $30 every 4 years (how much do the classic cars get driven annually?)

Fram filters... well, Fram no longer builds the same specification filters that they supplied to the factory in the 60s, 70s - not even for the V12s. The current Fram that fits the 308s is missing the standpipe that Ferrari specified for the upside-down orientation of the filter - the purpose of the standpipe is to retain oil in the filter when the engine is not running, so that pressure builds much more quickly on engine restart. Without the standpipe, the oil drains out of the filter. Fram filters no longer match the original filter requirement, and are not the same as what Ferrari fitted to the new cars back then.

Stick with Baldwin or UFI filters (OEM on 308s).