K&N filter 3.0TD Patrol

Submitted: Monday, Mar 06, 2006 at 20:05
ThreadID: 31483 Views:2383 Replies:7 FollowUps:7
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Hi All,
Does anyone know the part number of the K&N filter for the 3.0TD (2005 model). Has anyone fitted one, and if so what difference did it make?

Thanks

Scott
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Reply By: Member - Roachie (SA) - Monday, Mar 06, 2006 at 21:24

Monday, Mar 06, 2006 at 21:24
Scott, given the history of this motor and the issues with Air Flow Meters etc, I would be very reluctant to attempt to use anything other than standard filter on the 3Litre donk.
Also, there was an extensive post (search K&N) some time ago, which showed that K&N filters had the best air-flow characteristics of about 8 filters that they surveyed.....but it also let the most dust through. Those who like them argue that they breathe better in race cars etc. That's great, but these types of motors are highly stressed and tuned for maximum performance....NOT longevity.
I believe that fitting one to your 3litre (or my 4.2 for that matter) would give good short term results as far as power increase etc is concerned, but I'm not prepared to risk the minute dust particles that would be allowed into my precious motor.
Cheers
Roachie
AnswerID: 158976

Reply By: Member - Captain (WA) - Monday, Mar 06, 2006 at 21:33

Monday, Mar 06, 2006 at 21:33
Hi Scott,

Agree 100% with Roachie here, wouldn't want to put one on a 3.0TD. I used to run a Unifilter on my 80 series with no problems, but if I had seen this test report before, I wouldn't do it again.

Cheers

Captain
AnswerID: 158979

Reply By: SA_Patrol - Monday, Mar 06, 2006 at 21:44

Monday, Mar 06, 2006 at 21:44
Now you tell me, I have just ordered a K&N filter for my 4.2 GU3 , I was also going to put one of these add on filters what the tractors have , the round see through type, Donaldson I think.
AnswerID: 158983

Follow Up By: Member - Roachie (SA) - Monday, Mar 06, 2006 at 22:20

Monday, Mar 06, 2006 at 22:20
G'day mate,
Yes the Donaldson pre-filter that goes on top of the Safari snorkel. I have one, but rarely use it. I take it with me when I go on an extended trip when I know there will be lots of dust. However, I only fit it once I am in that situation....otherwise it seems to reduce the air intake at highway speeds.
I also have a Uni-filter which I no longer use. The main reason is that I became worried about what would occur if my maintaenance schedule was not quite up to scratch and it dried out a bit too much. Foam has a habit of breaking down after a period, especially if subjected to heat, and I did not fancy seeing what would happen if small bits of foam were sucked in through my turbo into the inlet chamber.....
Cheers
Roachie
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FollowupID: 413501

Reply By: scottcamp - Monday, Mar 06, 2006 at 22:04

Monday, Mar 06, 2006 at 22:04
Hi All,
Thanks for the advice, just saved me a few dollars. I guess you just assume after market/performance means better. I will just stick to the standard filter and put a chip in.

Thanks

Scott
AnswerID: 158988

Reply By: Leroy - Monday, Mar 06, 2006 at 22:55

Monday, Mar 06, 2006 at 22:55
Scott,

There is 2 reasons for not using the K&N filter. Firstly it doesn't filter as good as the std nissan paper element and as a result the MAF get's sandblasted. Secondly the MAF sensor gets a coating of oil on it affecting it's measurements.
The only filter to use is the nissan wet filter. They make 2 a dry and a wet. The wet filters better and is what is recomended for the 3.0l.
You 4.2l dudes can pretty much use what you like as you have no MAF sensor to upset!!

Leroy
AnswerID: 159005

Follow Up By: scottcamp - Tuesday, Mar 07, 2006 at 02:31

Tuesday, Mar 07, 2006 at 02:31
Hi Leroy,
Do you have the part number for the Nissan wet filter?

Thanks

Scott
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FollowupID: 413530

Follow Up By: Leroy - Tuesday, Mar 07, 2006 at 12:16

Tuesday, Mar 07, 2006 at 12:16
I could probably find the part no. but generally they are the filters they keep in stock now. Sometimes you come across dealers that don't know there are 2 filters and hand you a dry filter! If you come across one of those let me know and I find one of my old invoices with the part no.

Leroy
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FollowupID: 413567

Follow Up By: Exploder - Tuesday, Mar 07, 2006 at 19:57

Tuesday, Mar 07, 2006 at 19:57
“MAF get's sandblasted”
That’s a little bit of an overstatement

“Secondly the MAF sensor gets a coating of oil on”
Only if you don’t know how to oil them properly, Simply cleaning the MAF with some Throttle body cleaner every 15-20,000k’s will eliminated the risk anyway

I have been running a K&N for 50,000k with no problems and my MAF is like 4-inch from the filter, and never any sign of Oil or dust in the intake tube.

96.8- 99.3= 2.5% difference between the Top AC Delco and the K&N in overall ability to capture dirt. Oh baby that’s huge.
And it passed 7.0grms of dirt or 2/10ths of F***kall out of 221grs and blocked up in 20minutes, if you are driving in conditions that block a filter in 20minutes you probably shouldn’t be driving anyway.
Point to note also is the K&N gets a lot of it’s filtering ability from the oil if you pull in a lot of dirt that soaks up the oil and reduces it’s filtering ability.

If you are going to be driving in extremely dusty conditions all the time a K&N is not for you but if you are going to be driving in those sorts of conditions then you would run a Pre-cleaner, swap to a paper element or take the 5 min to tap out the lose cit from the K&N and apply some more oil, My feeling is for most 4WD applications nothing wrong with a K&N.
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FollowupID: 413669

Follow Up By: Leroy - Tuesday, Mar 07, 2006 at 21:12

Tuesday, Mar 07, 2006 at 21:12
No over statement. Straight from the dealer who services my vehicle.
Also generally people put more oil on than not on foam filter...just in case.

Leroy
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FollowupID: 413696

Follow Up By: Exploder - Tuesday, Mar 07, 2006 at 21:47

Tuesday, Mar 07, 2006 at 21:47
Yes they probably do but it’s a case of following instructions. K&N are not foam; I find they are also easy to tell when over oiled thanks to the coloured oil you use. Have never used a UNI-Filter

Ok whatever they dealer thinks, I will be staying with my K&N and have no concerns with it.
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FollowupID: 413720

Follow Up By: Leroy - Wednesday, Mar 08, 2006 at 14:10

Wednesday, Mar 08, 2006 at 14:10
I gather this was the filter test you used to quote from? Interesting read.

filter comparison

Leroy
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FollowupID: 413880

Reply By: SA_Patrol - Tuesday, Mar 07, 2006 at 21:52

Tuesday, Mar 07, 2006 at 21:52
Sometimes the dealers are like salesmans, ans I don't trust salesmans
AnswerID: 159203

Reply By: jorgejhandal - Wednesday, Mar 08, 2006 at 03:25

Wednesday, Mar 08, 2006 at 03:25
I purchased one and placed it on my patrol, tons of dust got through , you could see a ring of dust around the hole where the air went to the air mass sensor and the engine.
also they only last about 20 000 kms and you have to clean it every 5000 km at least .
you notice the difference at first but after 10000kms the filter gets bogged and even if you clean it its not the same
AnswerID: 159254

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