Air intake boot
Posting Guru
Joined: Jan 2007
Posts: 2,364
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From: Gilbert Az.
There is nothing wrong with the K&N filter as long as it's used properly. This includes proper cleaning, oiling and fitment in the box. Just make sure your box is sealing and you will be fine. I have seen several trucks with dirty intakes and in all cases the issue was a cracked or warped airbox lid, missing clamps, improper installation etc. I've seen it with factory Motorcraft filters as well as FRAM and other brands that people commonly use so it's not limited to just the K&N brand.
It's best to disconnect the intake tube from the airbox lid when replacing/servicing the filter. This allows you to positively engage the tabs on the lid into their hinge hooks and then clamp the cover down on the other end. Re-attach the intake tube last. With this procedure, the box should seal and there shouldn't be any problems. (assuming the box isn't cracked or warped etc).
I've been using the same K&N drop in filter for well over 200k miles. Here's what my airbox and turbo look like. You can still see the inspector's stamp on one of the turbo blades...
It's best to disconnect the intake tube from the airbox lid when replacing/servicing the filter. This allows you to positively engage the tabs on the lid into their hinge hooks and then clamp the cover down on the other end. Re-attach the intake tube last. With this procedure, the box should seal and there shouldn't be any problems. (assuming the box isn't cracked or warped etc).
I've been using the same K&N drop in filter for well over 200k miles. Here's what my airbox and turbo look like. You can still see the inspector's stamp on one of the turbo blades...
Jim
...& fat Monty
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Joined: Sep 2010
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Laughing Gas
Joined: Oct 2009
Posts: 831
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From: Vacaville, CA
Greg may be right, k&n filters as with all other serviceable gauze filters need the special attention to detail and patience when servicing them. I am just going off of experience and the opinions of many many many others on the forums and diesel specialists elsewhere. I was always very meticulous when servicing my filter, used proper k&n cleaning products, proper oiling procedures and always sealed the flange with the grease provided by k&n. After running it for 2 years (granted, I was living in the mountains of San Diego and traveled dirt roads, on top of frequent visits to the desert to ride dirt bikes) I had trashed my motor and was left with a hefty bill for a new long block. Cylinder walls were scored, turbo vanes were destroyed, basically I had been sucking dirt and sand in for 2 years. I talked to a couple of very reputable diesel techs and all of them had the same thing to say about the k&n... GET RID OF IT AND NEVER LOOK BACK!!!!
Our motors suck in a huge volume of air when under load, especially if you are running a tuner. The guys I have talked to about this issue say it's not so much to do with the oiling or sealing, but that the k&n is just TOO unrestricted, allowing dirt and fine sand particles to pass through the filter media. All of this is just my $.02, just would hate to hear of someone else dusting a motor like I did. My vote is for the 6637... Sorry to steer your thread off in a different direction, good luck on finding the intake boot you need.
is this what you're looking for?
2000 Ford F-350 Super Duty Air Intake Hose XC3Z9B659AA
Our motors suck in a huge volume of air when under load, especially if you are running a tuner. The guys I have talked to about this issue say it's not so much to do with the oiling or sealing, but that the k&n is just TOO unrestricted, allowing dirt and fine sand particles to pass through the filter media. All of this is just my $.02, just would hate to hear of someone else dusting a motor like I did. My vote is for the 6637... Sorry to steer your thread off in a different direction, good luck on finding the intake boot you need.
is this what you're looking for?
2000 Ford F-350 Super Duty Air Intake Hose XC3Z9B659AA
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Junior User
Joined: May 2010
Posts: 62
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Thanks for the info all of you. I may be making my own air system and using a 6637 or whatever the no. is. for that filter. Or maybe I can find a decent hose in a junkyard.
Does anyone know if the early/ late '99 hose from pcv to turbo is the same? Or same on OBS as my early '99?
Does anyone know if the early/ late '99 hose from pcv to turbo is the same? Or same on OBS as my early '99?
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