First K&N filter clean, I wish I had millions of dollars

**joel0407** · 1st December 2013, 09:08 PM

So much happier than I was with the previous paper filters. My intake tract now stays clean unlike before.

I am unsure of what brand the first filter was but I changed it out as soon as I bought the vehicle. The first 2 were supplied by Classic Land Rover. On the second filter I noticed it appeared the pleats had torn. I had changed out both pretty early since they were chock of dust. When I found the torn pleat, I went straight to Super Cheap and bought a Ryco because I thought it would be better than the torn one. Every time I had dust in the intake tract, past the filter. Ever time I'd clean it out and stress that some might have found it's way to my motor (I'm sure it has but it's not evident).

I know I cant contribute it completely to the K&N as I fitted a snorkel at the same time. Even with the snorkel I was surprised by the amount of dust, dirt and bugs in the filter. Best of all, no dust in the intake tract.

For you disbelievers, PLEASE DON"T POST.

I wish I had millions of dollars so I could guarantee you guys should your performance decrease or the filter not filter better than your cotton/paper/synthetic fibre or whatever dry filter you have I would buy you a brand new motor from Land Rover (too bad if you drive a Toyota). I'd just want you to try one.

I must say though it's the dirtiest I have ever seen a K&N Filter. The air box seems to direct most of the air to one side of the filter. It was the same case with the paper filter but I thought I might have changed it when I cut the horn out if the air box and added a snorkel. Obviously not. I am considering a plate mounted across the air box about halfway up to direct the air back across but I suspect I might cause too much turbulence and give a negative effect.

Happy Days

**Disco Muppet** · 1st December 2013, 09:13 PM

What interval do you clean it at?

**joel0407** · 1st December 2013, 09:18 PM

The paper one that tore didn't make it 2K. The K&N has made it 10K but I've done mainly rd km. That 10k included well over 7k to Brisbane and back from Darwin with just a little road works.

The K&N I ran in my WRX would make 12.5K and that would always include a reasonable amount of dirt but the dust around Bathurst and Orange (I lived on property near Blayney) has nothing on the dust of the dry season in the Territory.

Happy Days.

**joel0407** · 1st December 2013, 09:22 PM

The only reason I checked the one that only made it 2K was I had just replaced it before a trip to Kununara and back to Darwin. I took the Buchanan Highway on the way back and it was a 400km or so of pretty dusty road.

I think it just burst from being too blocked. Good luck tearing cotton fibre and the wire mesh of the K&N. I know they can fold but I believe it would have to be in an extreme situation.

Happy Days

**MR LR** · 1st December 2013, 09:22 PM

"Shakes head"

This has been gone over and over and over again, K&N are rubbish for dust, there is a thread in the good oil about an experiment undertaken on this.

I'm currently doing a Mechanical Engineering degree at University and I plan to do a similar experiment on the unsuitability of K&N air filters in Aussie 4WD's (or even half the Falcodores!).

It's scientifically proven that they are unsuitable, K&N don't even advertise them for offroad use. There will never be a K&N filter in any of my offroad vehicles, I'd be sure to use one in a road going machine though! (see it's not the brand I am opposed to).

I'd suggest if you were having issues with paper filters you were using crap. And I just hope you don't keep that K&N forever... change it sometimes!

BTW I ran K&N dirt bike pod filters on my CB250 powered dune buggy for a weekend on the farm (it's first run after building it), by the end of the weekend it had nearly no compression and the carbs were full of dust, we binned it due to the Honda parts pricing, it's now running a Yamaha FZS600 with the stock filter box and filter, what do you know, there is no dust in the carbs...

K&N are good filters for clean air... that's about it...

Cheers
Will

**MR LR** · 1st December 2013, 09:24 PM

I've had a cooper filter so blocked full of dust that it collapsed the intake pipe of a 300tdi, I knocked the dust out of it and it was fine until the trip was over. There was no dust on the engine side of the airbox.

What brand were your paper filters?

**joel0407** · 1st December 2013, 09:28 PM

Originally Posted by MR LR

"Shakes head"

This has been gone over and over and over again, K&N are rubbish for dust, there is a thread in the good oil about an experiment undertaken on this.

I'm currently doing a Mechanical Engineering degree at University and I plan to do a similar experiment on the unsuitability of K&N air filters in Aussie 4WD's (or even half the Falcodores!).

It's scientifically proven that they are unsuitable, K&N don't even advertise them for offroad use. There will never be a K&N filter in any of my offroad vehicles, I'd be sure to use one in a road going machine though! (see it's not the brand I am opposed to).

I'd suggest if you were having issues with paper filters you were using crap. And I just hope you don't keep that K&N forever... change it sometimes!

BTW I ran K&N dirt bike pod filters on my CB250 powered dune buggy for a weekend on the farm (it's first run after building it), by the end of the weekend it had nearly no compression and the carbs were full of dust, we binned it due to the Honda parts pricing, it's now running a Yamaha FZS600 with the stock filter box and filter, what do you know, there is no dust in the carbs...

K&N are good filters for clean air... that's about it...

Cheers
Will

DIDN'T I ASK THAT DISBELIEVERS DON'T POST.

AS YOU SAY "This has been gone over and over and over again".

WELL GOOD FOR YOU AND YOUR BENCH TEST. REAL WORLD WITH HUNDREDS AND THOUSANDS OF DIRT KM, THEY HAVE ALWAYS WORKED FOR ME FOR OVER 15 YEARS

WHEN I BOUGHT THE DISCO I THOUGHT I'D JUST STICK WITH PAPER BUT I LEARNT MY LESSON.

HAPPY DAYS.

**joel0407** · 1st December 2013, 09:33 PM

Originally Posted by MR LR

BTW I ran K&N dirt bike pod filters on my CB250 powered dune buggy for a weekend on the farm (it's first run after building it), by the end of the weekend it had nearly no compression and the carbs were full of dust, we binned it due to the Honda parts pricing, it's now running a Yamaha FZS600 with the stock filter box and filter, what do you know, there is no dust in the carbs...

Was it oiled correctly with K&N oil? Was it a genuine K&N pod filter or some cheap copy? Was it sized correctly for the motor?

**joel0407** · 1st December 2013, 09:47 PM

Originally Posted by MR LR

I'll ask again, what **** house paper filters were you buying to have that issue?

I could only guess the first 2 were these "Coopers Brand Air Filter-ESR4238". That's a copy and past from Classic Land Rovers Ebay page. It was a Ryco I replace the torn filter with and it dusted past the filter just as quick.

I said the K&N mainly did Rd km but there has been a good couple of hundred dirt km but I didn't think it was that dusty

I was pretty surprised about the amount of dust it caught given I have a snorkel fitted. My WRX sucked air from the inner guard as the Disco did before the snorkel. The WRX did 40 - 50 km of dirt every day and the filter had no were near after 12.5k.

If you want to discuss stuff. I'm happy to talk about the general dust in the air and how others have found the dust they still get with a snorkel fitted.

Happy Days.

**MR LR** · 1st December 2013, 09:51 PM

Originally Posted by joel0407

Was it oiled correctly with K&N oil? Was it a genuine K&N pod filter or some cheap copy? Was it sized correctly for the motor?

Yes, we even tried chainsaw bar oil which cut the dust down even more, yes and it was actually oversized (being a 250 with twin carbs).

Originally Posted by joel0407

I was just not very happy when I kept finding dust past the filter. I made a foolish mistake to trust a paper filter.

It's reasonably documented that some get dust past the filter but they seem to trust an oily intercooler to catch the rest and accept it as normal. Knowing the work that goes into building a motor, I like to look after it as much as I can and I get excited about little things like this and I wanted to share but I didn't want the usual K&N v everything else debate. I've been there, done that.

I'll ask for a third time, what is the brand of filter you used in the past? No one seems to have these issues you blabber about with quality paper filters...

I also think it's quite foolish to discount Isuzurover's lab tests and real life experience, that bloke know his **** and I'd say he has done a lot more dirt driving than you, in your WRX and Landy... bro.

Interesting you mention Blaney, a fair chunk of my family has property at Grenfell, Wagga and Narranderra, the properties all have dirt roads, and they don't use K&N in anything

If you didn't yell at me I wouldn't be such a **** and be telling it like it is.

Btw, I assume you have a Tdi, I did mine up at the age of 17 over a weekend, I honed it and replaced the rings as it had injested water (due to me having an 17 year old moment... although it made for a spectacular photo!), a full rebuild wouldn't take too much longer unless there were complications.

Cheers
Will

EDIT: I see you've answered my question, thanks, we have run Cooper filters in our 3 D2's for the last 10 years and my D1 for the last 14, never had an issue, and definitely no dust.

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