Engine/Transmission (1998.5 - 2002) Why I said "To Hell with the K&N"

[Muleskinner]

I have a Car Quest in town. Has anyone tried their filter? Napa is about 45 miles away from me. Only Kragen, Auto Zone and Car Quest are local. Small town.

 

[JohnE]

I really enjoy the BHAF in my 12 valve powered unit. The oiled filters are just too noisy for my ears.



The marine filters are available but according to Fleetguard feedback use the same filter media but add a heavier internal grid to prevent collapse.

I use a sock from Outerwear on my BHAF. Outerwears is supposed to replel water. It really shows the dirt but the BHAF still appears new. I replace my filter yearly.



A buddy of mine replaced his fuel filter and developed a leak that saturated the engine compartment. His BHAF did not show any damage but was wetted with fuel and replaced.



The AH1141 may be longer but has at least 10% less filter area than a AH19037.





Part: AH1141

Manufacturer: FLEETGUARD

Part Type: Air Housing, Disposable

End Connection ID: 101. 6 mm (4 in)

End Connection Height: 35. 052 mm (1. 38 in)

Largest Housing OD: 215. 9 mm (8. 5 in)

Overall Height: 314. 45 mm (12. 38 in



Part: AH19037

Manufacturer: FLEETGUARD

Part Type: Air Housing, Disposable

End Connection ID: 101. 6 mm (4 in)

End Connection Height: 35. 052 mm (1. 38 in)

Largest Housing OD: 266. 7 mm (10. 5 in)

Overall Height: 301. 75 mm (11. 88 in)





Muleskinner;

Any local store carry Wix products? How about any truck shops or agriculture shops such as JD or CASE-IH NH? They can usually get Wix or Fleetguard.



-John

 

[Wiredawg]

I'll Keep My K&Ns

Good luck w/ your new setup. I'll keep my K&Ns. Been running them since 1990 and no problems. With 39K miles, I just pulled my turbo inlet off and it's clean as a whistle. With these dusty roads here in Texas, I wouldn't be without it. No pre-filter either. And, the one on my 2002 came off my 00. That would be 96K miles total on it.



Anyway, everyone has their own preferences and mine is K&N.



Happy Trails, Wiredawg

 

[Vaughn MacKenzie]

Deja Vu

Chipstien, I had the *exact* same experience as you back in 2000 with a K&N on my new 2001 HO. Here's the thread I started: K&N Doesn't Stop Dirt!!!



Vaughn



ps I am known as "Archive"

 

[DPelletier]

I feel pretty good about ditching my RE0880. FWIW Gary is right and the K&N is a good filter and works great in most normally aspirated engines. If you got a large enough one it would work great on our engines too. Problem is the RE0880 is barely large enough for a stock engine, much less a modified one running more boost. Gary, you did make an error in your 30 PSI = 1440 ci analogy, but I'll let that one slide

Viscuous impingement filters like the K&N are suspect in high static applications in my opinion. Also, the additional static pressure drop due to the two pre-filters would not cause increased contamination because the airflow wouldn't increase (actually it would decrease if enough static pressure was added), so the suction of dirt past the filter is a function only of CFM vs. filter size, given the characteristics of this particular media.





Dave

 

[Chipstien]

Re: Deja Vu

Originally posted by Vaughn MacKenzie

ps I am known as "Archive"

No kidding... ... . I would have never guessed.

 

[RowJ]

I'm pulling 48-50 boost through a K&N FIPK II (RC-4780 Filter) on a B-1 turbo compressor.

As stated before, my intake tube is spotless, so I don't think the idea holds water that K&N can't handle bigger than stock HP. I get more air than I need; have actually had the air back up (cough) on me at certain settings. Could handle much bigger injectors easily but don't care for the smoke and have all the power I want. My K&N feeds my B-1 easily.

I haven't dynoed since adding the TST PM3 but should be well over 400 hp!

Rowland

 

[csaba]

for what it's worth ...

I put in a K&N filter about a year ago when the truck had about 50,000 miles on it. Drove it for a year ... now I have 96,000 miles. Reading this tread ... I was thinking ... I better check to see if the filter needs to be cleaned and re-charged.

I took it all apart cleaned it and recharged it.



Everything looked as clean as ever ... NO DIRT anywhere. Oo.

My wife had the digital camera, so I couldn't take pictures.



I drive mostly long distances in NJ and PA not much dust around here and the truck was stock.



I don't know what the difference is, but the K&N filter worked for me.



Csaba

 

[Gary - K7GLD]

"Gary, you did make an error in your 30 PSI = 1440 ci analogy, but I'll let that one slide"



I realize it's not precise, and was offered more as an approximation to demonstrate the flow increase that DOES exist in artificially aspirated engines, than as an absolute lab statement - the principle DOES apply tho'...

 

[JR2]

For all of you running the K&N, have any of you had an oil analysis done?? Just because you don't see any dust in the tube or turbo does not mean that your not getting dirt into your oil.



Like I said earlier, I ran a RE0880 and my silicone #'s where high and everything was clean. When I switched to a BHAF the numbers went down to below what the numbers where with a stock filter.



Good luck and get an oil analysis done for your own piece of mind.

 

[Gary - K7GLD]

(sigh!)



Here's one:



#ad




And yeah, *I* have plenty of "peace of mind" - what little mind I have left...

 

[RowJ]

JR2 - As stated above; I had 3 ppm Silicon after 10,000 miles on Amsoil.



Gary, I'm confused - I thought you were anti K&N? This analysis looks good! If I'm reading it correctly - 3 ppm on 6500 miles?

 

[Gary - K7GLD]

YUP - you read the report properly - and the LAST thing ANYONE has ever accused me of, is being "anti K&N"



I do, however, believe in giving credit where due, and the larger BHAF filters on modded engines is a good move, one that I may well employ myself at a future point...

 

[lfuchs]

what is a bhaf and where can one be purchased

 

[lfuchs]

im sorry wasnt thinking i know what is going on

 

[Vaughn MacKenzie]

I had a bad K&N experience, but IMO the majority of them are good, but there are definitely bad ones out there and they show up pretty often. Their quality control is probably the worst between them and AFE, Air Raid, Amsoil, etc. filters.



Bottom line. . . check it often, and do oil samples if you run a K&N. My Si was 14 when I had mine on.



Vaughn

 

[RobertMiller1]

BHAF

Well, I have run K&N's for years. From twin turbo Supras to my Jaguar. Now have an Re880 on the cummins.



The problem I see with the Napa BHAF 2790 (is it?) was the $48 price and they didn'thave any at the store.



This is a throw away filiter is it not? that's steep.



Actually been thinking about going back with the factory air box and the fleetguard. When I changed that filter, I could hear the turbo whistle and feel an improvement even though the indicator was only slightly off it's base.



Figure it's good enough for my lightly modded engine with superchips on performance tow (50hp).

 

[Texas Diesel]

Originally posted by JR2

For all of you running the K&N, have any of you had an oil analysis done??

My silicon was 34 PPM with the K&N and after the K&N went in the trash can my silicon dopped to normal and averages 5-7 PPM now.

 

[RowJ]

Vaughn MacKenzie

Think you have the answer - some may be bad! Only other thing not discussed here is - How many that had problems with K&N, had their problems with the original, factory oil filter? I know K&N warns against cleaning too often and over oiling.



Anyway, this wipped horse may not be dead - but it's at least very lame! I'll consider myself lucky my K&N works well and promise not to stick pins in dolls that look like those who dislike them. I'm out of here - gonna search for a thread asking which engine oil is best!

Rowland

 

[drag racer]

i'm not trying to add fuel to the fire, just add another data point - i have been running the K&N FIPK for a while with one of their thin, water resistant wraps over the filter. I have yet to clean the filter since installing. The yellow wrap gets dusty, but my intake tube and turbo inlet are spotless everytime I check it after reading a post like Chipstein's.