K & N AIR FILTER

[jalexquijano]

Any noticeable difference installing a K & N AIR FILTER?

http://www.thezstore.com/page/TZS/PROD/classic17a02a/11-5002

Do you need to remove the rubber gaskets inside and around the the original air filter box so the K & N Filter can fit?

 

[Mark Maras]

 If the gaskets align and the thumb screws are long enough, I'd use it as is. That gasket in the housing is one of those "unicorn parts".

[siteunseen]

Read the ad!!

K&N Performance Air Filter, 73-74 240Z-260Z

Description: This is a great upgrade to the stock air filter for late 240Z's, 260Z's, or any Z that is running the Hitachi (flat top) carburetors and the stock 73-74 housing. This filter measures 2 inches thick as shown above.  Model Guide: Datsun 240Z, 260Z  Code Guide: Datsun S30  Year Guide: 1973, 1974

Edited December 20, 2016 by siteunseen

[Jeff G 78]

I'm not a big fan of K&N filters.  A good paper filter flows just as well and does a much better job of filtration.  Buy a stock replacement filter and don't buy the hype.

[jalexquijano]

already installed with no issues!! thanks!

[siteunseen]

How much better does it run?  I ran k&n filters on my sport bike and they really made a difference.  Did the filter help any other problems you've been having?  I'm on the fence on whether to buy one. Any advice would be great! Thanks!

[grannyknot]

34 minutes ago, siteunseen said:

I'm on the fence on whether to buy one. Any advice would be great! Thanks!

Don't waste your money, unless your paper filter is clogged the K&N isn't going to do anything but let very fine sand into the cylinders.

[psdenno]

3 hours ago, grannyknot said:

Don't waste your money, unless your paper filter is clogged the K&N isn't going to do anything but let very fine sand into the cylinders.

I've had K&N air filters on my Porsche for 25 years and live in a desert.  Hopefully, the cylinders aren't half full of fine sand 

Dennis

[Jeff G 78]

I am an automotive engineer at Ford Performance.  About 15 years ago when K&N filters were all the rage, we tested K&N filters as well as various paper filters for both flow and filtration abilities.  The stock Ford high performance paper filters flowed better and did a much better job catching fine particles than the K&N filters.  We didn't do this testing to prove how good we are, we did it because if the K&N tested better, we would have sourced them.

Our 526 HP, 8250 RPM GT350 uses a paper filter because it breathes better.  A K&N filter relies on oil to catch the dust and if the filter has too much or too little oil, it will either choke flow or allow debris to pass through.  No thanks...  BTW, you don't see desert racers or off road motorcycles used K&N filters either.

As for K&N's making more power, they are almost always paired with a cold air intake which does indeed make more power than a restrictive OE airbox.  Then again, try passing any kind of water fording testing with a cold air intake and see how long the engine lasts.  Aftermarket intakes are great, but they come with caveats.

[grannyknot]

8 hours ago, psdenno said:

I've had K&N air filters on my Porsche for 25 years and live in a desert.  Hopefully, the cylinders aren't half full of fine sand 

Dennis

It would be interesting to have a look at your cylinder walls.

[Martzedcars]

K & N  never in my cars! or motorbike!   popyjopie stuff  (Popular stuff, lots of commercials... good stuff don't need that....) haha  

[psdenno]

6 hours ago, grannyknot said:

It would be interesting to have a look at your cylinder walls.

Yes, it would.  If it didn't cost mega-thousand dollars to pull a six cylinder Porsche engine apart and put it back together, I'd give it a look.  

Air filters comprise an interesting topic that generates lots of opinions full of accurate and inaccurate information.  I run the K&Ns because that's what came on the car when I bought it.  My other cars all have paper filters, usually whatever's on sale at the parts store.  I recently replaced the filters on my Infiniti G37.  The dealership service manager said to only use "real" Infiniti (Nissan) filters which are lightly oiled paper elements.  Consensus on the Infiniti forum was to buy whatever replacement brand you want at the local parts store.  A few owners suggested K&N.  Some said stick with Nissan branded filters.

Some say the oil on K&Ns fouls sensors.  K&N says it doesn't void a new car warranty.  K&N does make filters for off-road applications.  Ford Motorcraft filters are made by Wix and Purolator to Ford specs, but are those specs significantly different than Wix and Purolator filter specs? Questions, questions, questions and no definitive absolute answers.  Kind of a pay your money and take your chances.

The topic does make for good discussion over a couple beers.  But, like politics and religion, minds probably won't be changed as a result.  I will now step off my soap box and slide it back under my desk until next time 

Dennis