K&N Air filter
 

Anyone have experience with a K&N on an 84 300TD. Is there anything to
be gained by going to one?

Your turbodiesel is not being choked or strangled. There will be no gain with a K&N.

You gain a bit more airflow (that you cannot use) and significantly more particulate matter and dirt from the air (that the engine doesn't want).

If u are talking about putting it in the stock air can, u wont gain anything, just use the oem paper filters, they provide suffficient airflow.

No gain whatsoever. Maybe 0.0001 seconds faster 0-60 from your lighter wallet.

on most older european cars, the oem filter design has so much airflow, that a k&n provides no benefit.

OH NO! Not again! Look, there are many who claim it will riun your motor and if you do not oil it properly it will. If you live in a really dusty area like I do, properly serviced you will get slightly better performance and longer filter life, but your unlikely to feel it at the accelerator. I have one in my 1983 300D and no regrets.:D

^^^^ what knightrider said. i had a 1974 dodge ramcharger 4X4 that came with a oiled air filter as oem equipment that had instructions for dusty service blah blah blah.

Oiled gauze/cotton and oil bath filters are very different technologies.

The trick is to make your oil gauze cotton filter an oil bath filter housing! ;)

:laugh3: :D

I have a new in box one, if interested.

For what year and model? And how much?:confused:

Do not use it Period.

That's a good place for it.........leave it there........

If you have an American car like a Mustang or something and want to get more power a cold air kit with a K&N is not a bad idea.


But these are not Fords, or Chevy's, or have anything in commen with the two. In regards to high end European cars K&N filters a totaly pointless and worthless.

Thanks---I think.

There has been detailed study on a commercial diesel engine with K&N versus paper and felt filter, conclusion was K&N let in more dust and the CFM air intake factor was nothing significant over paper or felt.

http://home.stny.rr.com/jbplock/ISO5011/SPICER.htm

Filter Efficiency is a measure of the filters overall ability to capture dirt.
http://home.stny.rr.com/jbplock/ISO5...s/image002.jpg

In the chart below it’s important to note the different test durations for each filter. The AC Delco filter test ran for 60 minutes before exceeding the restriction limit while the AMSOIL and K&N tests each ran for 20 and 24 minutes respectively before reaching max restriction. In 60 minutes the AC Filter accumulated 574gms of dirt and passed only 0.4gms. After only 24 minutes the K&N had accumulated 221gms of dirt but passed 7.0gms. Compared to the AC, the K&N “plugged up” nearly 3 times faster, passed 18 times more dirt and captured 37% less dirt.
http://home.stny.rr.com/jbplock/ISO5...s/image010.jpg

ForcedInduction,

Many thanks, this is the exact test I was referring to, I have a PDF saved somewhere but have to dig it up, you saved me all the trouble.

i finally found the info i was looking for. this page shows that the stock paper filter for a volvo is one of the last places you should spend $ while trying to reduce airflow restriction. mercedes filters are similar with lots of folds.

http://www-unix.oit.umass.edu/~tcroy/articles/intakerestrictions.htm

Ok, I'm convinced! Does anybody want to buy a good used K&N? Who wants a free one?

Chris

I'll take a free one! what these tests don't tell you is how the maintenace was applied to the K&N filter. I already said that I made an oil bath filter and put my K&N into that. If you think you can just spray on a bit of oil and go for 50,000 miles your mistaken! The Filter needs to be oiled FREQUENTLY! Most air filter housings have a dish about 1/2 inch or more and it's not hard to pour some Marvel oil in there, which is very particulaphyllic by the way, and clear it out periodically. The K&N filter is sitting in a pool of oil and the air passing through it is blowing bubbles in the filter oil. Ever seen a desert dust storm? My secondary wick sponge filter after the K&N has ZERO dirt in it after a dust storm with 30 MPH driving Speeds and visibility of 40 feet or less! Your test won't show that either! Get creative and modify!;) You can't just plug statistics into a test program and expect perfect results. the paper filter is a TOTALLY different animal than an oil wick or oil bath one and if you think these results matter after applying one coat of oil and testing it against the life of the paper filter to see who comes out on top is ridiculous because they are not designed to operate the same. EVEn K&N specifies and points out that 50,000 between filter maintenace is under the most IDEAL conditions.:P:D Don't get a K&N because you want more power at your right foot, get one because they can be modified to surpass any other filter at getting the dirt out!

How many times does this myth have to be killed?

K&N filters are useless on our diesels. If you don't understand why, you should not open the hood of your car, ever, and put it on EBAY stat.

Buy a ricer.

Have a wonderful day.

240Joe

I like the K&N provided it is used appropriately. I have one on the MB and one on the work truck. Oil analysis, three tests to baseline each before the K&N's were installed and three afterwards were performed. There was NO increase in silica, wear metals, etc. in any of the post tests nor have there been since. If crap is getting past the K&N's the analysis would show it. In my applications, low dust, on road in a fairly wet climate, they seem to work okay. I doubt they work well in dry, dusty environments like the Southwest. I also oil the bejeezus out of the filters.

IMHO, the K&N does have a great application on MB's. Replace that Rube Goldberg affair of a filter on the 617. RT

They do not work well in a dry desert with heavy dust just dropped into the filter housing and forget it! But I was literally changing paper filters after every dust storm because they would get clogged in one 100 mile trip. It's worth the effort to make an oil bath for this filter as I'm no longer changing them as often. A rivet gun or welder to put up the divider to form a sump for about 1/2 to 1 inch of oil to saturate the K&N and it works ideally here. K&N being an oil base filtering system is the only one durable enough to take a oil bath and last, but I can feel no difference at the throttle. But I'm glad you mentioned oil analysis because several years of engineering taught me that this is what you base your schedule for oil changes and service intervals and I would recommend everyone do an analysis at least once per year although twice would be better! I change my oil every 5000 miles and clean my oil bath K&N as often as once every 3 months showing how important it is to know the facts about what is going on under your hood. Most of you do not live in a climate where blowing dust can cut your visibility down to 15 to 25 feet and desert dust can turn into an industrial grade diamond in the combustion chamber of a diesel engine! Try a real test. Take a piece of foam rubber and bath it in Marvel Mystery Oil and place it inside of your stock filter assembly and look at it after 3 months of driving and post back what you see in real life conditions. Make sure you use Marvel Mystery oil as it will not break down foam rubber. Cut a piece of wire screen and place it in the inside of the foam rubber to keep it from coming loose. No need to drench it, just make sure it is fully penetrated. This will be a real indicator of how good your filter is. This will be well worth the effort.:D

how many times do you have to be banned? :rolleyes:

Answer:
 

K&N filter topic links thread
http://www.peachparts.com/shopforum/diy-links-parts-category/173036-k-n-filter-topic-links-thread-post1354738.html

I believe it's 3 now. He won't be back until December this time. :)

I will take all of this as a maybe. Guess I will install one and see what happens. Thanks

Get WIX or OEM. I showed the differences in a thread a while ago between the Wix Puralotor and K&N. OEM/Wix had the highest number of folds == most amount of surface area. The k&n had the lest number of folds == least amount of area. How are you going to pass more air and less dirt with the least amount of surface area?

Does AC Delco make cone type filters?

Edit: Nevermind :(

I'm sure you could find a round type with a 2 - 2.5 - 3" mouth that would seal well on the tube. That's what I'm doing, for now...

My intake tube is 3". Did you just plug the other end of the round filter?

The Amsoil filter tested here is the oiled foam TS series and the TS123 is used in later model GM pickups and SUVs. They have a new nanofiber filter (EaA series) and I would like to know if anyone knows of any test data like the above with the newer series filter results. Not the "results" from the Amsoil tests but some independent comparisons. Out of curiosity go to amsoil.com and see what they say about their new filters.
Thanks.

Plug what end? You must be thinking of round like what the stock setup uses. I'm talking about ones that are cylinder shaped.

Untrue. If I was going to keep my 95 for a long time, why wouldn't I buy ONE air filter for it???


Or I can buy 10 paper ones? And throw them away when done.


K&N makes sense for a car you'll keep for a while. For the economy of it, not for the performance. My CHevelle is faster with an AC filter by a tenth. Clean paper flows best.,

Everyone already knows that.

I'd rather buy 100 paper filters before letting a K&N on my engine. It's part of normal maintenance and you only have to do it once a year.

If my labor for cleaning the filter were free, and I thought that the K&N did as good of a job as a paper filter, I'd have one on my car.

Turns out that I value my labor quite highly. I can buy two paper filters for the time it takes to clean the K&N once.

I tried to send you an email -- I have a cone filter setup I just removed from my car. Drop me a PM if the email didn't make it through.

http://www.bolhuijo.com/airflowtest/

This says it all: "I'd feel better about it if I couldn't see so much daylight through this filter though."
http://members.cox.net/lnewcomb99/Pics/KNfilter.jpg

The cheap paper filter is designed for your car and better for it.

Does your car have a MAF? I poorly oiled K&N will kill a MAF.

Yes this needs to be factored in. Time to change a paper filter, 5 minutes.

Clean and re oil a K&N what 20-30 minutes? Screw that my time is worth more.

oil bath filter
 

what is the method used to make the oil bath setup refered to ? I have a 54' GMC pick-up that came with one as standard and they claimed that an oil bath air cleaner was the most effective type there was ---and the research is only 53 years old. But the idea of a permanent filter is appealing if it really is effective. how about an oil bath prefilter andthen the stock paper set up too, maybe only have to change the paper every two years...

I'm having to go to bed so i can get up early, but I will explain in detail tomorrow for all of you what I did with my K&N! No regrets!