K & N FILTERS

**altech** · 7th May 2006, 10:40 AM

Hi Guys,
Have put a new K&N Filter into my 300 Tdi last week ,and found that it's the best thing I could have done for this motor, e.g. when I start it up in the mornings now ,it doesn't make the usual sounds any more,motor heats up more quicker now which means no driving up the road in slow mode like be4 and when you have a teen on broad saying I'm late 4 school ,but you have plenty of time to get there ! haha ! . there's this hill that I climb on the road that I use to going at 80 k's be4 it changed down to 3 gear (auto) ,but still only 80, now crusie at 90 k's and no gear change , :-) . So guys is it because more air flow into motor that making more power and torque ? or it something else, well I'm happy
cheers4now alex

P.S. just filled tank up , yet to fine out the km's per tank ,normally 820 k per my standed D1 tank :-)

**one_iota** · 7th May 2006, 11:02 AM

The general view here and elsewhere is that the improved air flow achieved with oiled filters has a down side: increased intake of dust = increased engine wear

http://www.outerlimits4x4.com/PHP_Modules/...pic.php't=65854

http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm

But if you stay on sealed roads the risk is reduced.

**Steinzy** · 7th May 2006, 01:17 PM

I've got a K & N on the Rangie and have fond that it keeps the dust out just as well as the stock paper filter and I also repels water!!!

**p38arover** · 7th May 2006, 02:34 PM

Originally posted by Steinzy
I've got a K & N on the Rangie and have fond that it keeps the dust out just as well as the stock paper filter and I also repels water!!!

I thought oiled filters were bad news for the MAF sensor.

Ron

**sclarke** · 7th May 2006, 02:42 PM

K&N are one of the best around due to the filtration... most dont filter as welll...

Keep us informed of the progress of it.

I run Std filters and a Pre filter in the Snorkel to stop bad dust on convoys.....

**disco_ute** · 7th May 2006, 02:58 PM

Originally posted by sclarke
K&N are one of the best around due to the filtration... most dont filter as welll...

Keep us informed of the progress of it.

I run Std filters and a Pre filter in the Snorkel to stop bad dust on convoys.....

i used to think k&N were good too untill i read this -

http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm

I sold mine and now use OE filters in all my cars

Mick

**PhilipA** · 7th May 2006, 03:03 PM

You are dreamimg. Its called the halo effect.
A filter could not effect warm up .
maybe better air flow only if if you had never changed your standard filter at theexpense of poor filtration..

Regards Philip A

**altech** · 18th May 2006, 07:24 PM

[b]Hi Guys ,after 2 weeks of running on a full tank of fuel ,I still get 820k's per tank,more torque and power when I need it and when I used to start up with a cold motor ,no puff of smoke coming out of exhaust ,just gone!!!!

cheers4now alex

p.s. that halo effect. by PhilipA .....hmmm, I just think more air in cylinder has to make more combustion, more combustion means heat , heat warms engine block ..... hmmm

**PhilipA** · 18th May 2006, 08:39 PM

Altech, I have tested a Range Rover cylinder paper filter for its resistance to the air flow with a $100 Minihelic differential vacuum gauge calibrated to max 30 inches of water.
Up to about 3/4 acceleration its resistance is NIL and at full noise on a 3.9 it is 4 inches of water which is a tiny bit. That is both the filter element and the housing. I took the vacuum reading between the filter and MAF.

Now I havent tested a Disco panel but at low revs I am sure it would be nil unless very dirty. A diesel passes more air at max torque revs but at idle and not full torque it should be only passing a moderate amount or air.
I have found that improved inlet air flow only gives an improvement at absolute maximum air demand eg up a hill flat aand only if the standard filter is too small. Others eg The Toyota V8 forum have tested them on dynos and found a very small improvement in power ONLY at max demand.

Did you read the reports on K&N? I had one , and found fine dust in my MAF after a trip to Jerilderie via Wombeyan Caves. If its an 300Tdi auto with a MAF, be careful you do not foul it .

It should do no damage on a straight mechanical 300Tdi except if you travel on dusty roads.

You are entitled to believe in it, but show me the test results before I do.

A reason I now do tests is that I bought a Hiclone on the advice of a friend who swore that he got 15-20% fuel economy improvement. I got zilch when I tested it to and from Sydney to Brisbane.
Regards Philip A
.

**disco_ute** · 18th May 2006, 08:47 PM

<div class='quotetop'>QUOTE(PhilipA @ May 18 2006, 09:39 PM) Quoted post</div><div class='quotemain'>
Altech, I have tested a Range Rover cylinder paper filter for its resistance to the air flow with a $100 Minihelic differential vacuum gauge calibrated to max 30 inches of water.
Up to about 3/4 acceleration its resistance is NIL and at full noise on a 3.9 it is 4 inches of water which is a tiny bit. That is both the filter element and the housing. I took the vacuum reading between the filter and MAF.

Now I havent tested a Disco panel but at low revs I am sure it would be nil unless very dirty. A diesel passes more air at max torque revs but at idle and not full torque it should be only passing a moderate amount or air.
I have found that improved inlet air flow only gives an improvement at absolute maximum air demand eg up a hill flat aand only if the standard filter is too small. Others eg The Toyota V8 forum have tested them on dynos and found a very small improvement in power ONLY at max demand.

Did you read the reports on K&N? I had one , and found fine dust in my MAF after a trip to Jerilderie via Wombeyan Caves. If its an 300Tdi auto with a MAF, be careful you do not foul it .

It should do no damage on a straight mechanical 300Tdi except if you travel on dusty roads.

You are entitled to believe in it, but show me the test results before I do.

A reason I now do tests is that I bought a Hiclone on the advice of a friend who swore that he got 15-20% fuel economy improvement. I got zilch when I tested it to and from Sydney to Brisbane.
Regards Philip A
.
[/b][/quote]

Phill u shouldhave tried fuel magnets they really work.......

for those who care the latest mythbusters aired in the us is about fuel saving devices..... afwiw non of them work!!!

Mick

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