K & N air filter replacement help - Ford Powerstroke Diesel Forum
 
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post #1 of 8 Old 06-30-2013, 06:58 AM Thread Starter
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K & N air filter replacement help

Good day. I've been reading older posts regarding the K & N air intake filter and now I'm concerned about the quality of the filter. I've read about dusting issues and swapping the filter out. My truck had the K & N filter mod done to it by the previous owner and I thought it was a good thing until I started reading about other users opinions. I think I'm convinced now to swap out the filter for a replaceable element like the napa 6637 or the fram equivalent. I don't have the stock air intake pipe any longer so I'm wondering if these other filters will direct fit on my existing K & N intake pipe or if I have to do some more work. I'd appreciate any feedback.
My truck is a 1996 F350 Crewcab 4x4 7.3L PSD DRW.


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post #2 of 8 Old 06-30-2013, 07:11 AM
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I'm not sure the diameter of the k&n intake tube. But the 6637 has 4 inch opening


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2002 F-350 7.3 ex-cab short bed Beans 6 Pos
6 inch lift, 35,s, 4 Inch Turbo Back, 6637 intake
Foil delete, 05 harley front end, 08 Tailights
Tinted cab lights, and this and that and this
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post #3 of 8 Old 06-30-2013, 07:28 AM
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Also, If you have everything stock from the Crankcase Breather Adapter back to the Turbo, you could just get a Tymar setup (Cary at CT Performance sells them) since it has a new hose from the breather adapter to the exhaust elbow that attaches to the filter. Plug-N-Play! Cheers!

1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
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post #4 of 8 Old 06-30-2013, 08:00 AM
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I originally had the K&N filter and used the entire setup when I did the modification to the 6637.

97 F250 PSD...6637 Filter upgrade...3" Diamond Eye DP...DFuser EBPV eliminator...Improved "Blue" CPS...
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post #5 of 8 Old 06-30-2013, 05:05 PM Thread Starter
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One other question that came to mind. Once the 6637 filter is installed, what do I need to do to keep it dry? I'm nervous that rain or other moisture will get on the paper filter rendering it basically useless. The stock one is encased in a plastic waterproof box and the K & N is covered in oil from the recharge kit. Any thoughts?



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post #6 of 8 Old 06-30-2013, 05:32 PM
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If you get the Donaldson filter, it is water-resistant. Folks from snow country and Washington/Oregon area have not had problems with water. I did not have any issues on my 94's setup (and we get snow here too). Cheers!

1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
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post #7 of 8 Old 06-30-2013, 11:02 PM
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Quote:
Originally Posted by blackgold9838 View Post
One other question that came to mind. Once the 6637 filter is installed, what do I need to do to keep it dry? I'm nervous that rain or other moisture will get on the paper filter rendering it basically useless. The stock one is encased in a plastic waterproof box and the K & N is covered in oil from the recharge kit. Any thoughts?



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The oil on the K&N filter gets sucked off by the turbo pretty quick too! then rendering the K&N worthless.

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post #8 of 8 Old 07-01-2013, 10:50 AM
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Just get a Tymar intake, comes with everything needed to do it correctly. PM me if I can help.
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