air filter
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Joined: Dec 2003
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From: Crosby.Tx
air filter
ok we all have seen them at the auto parts the after market reusable "high flow" air filters that have the 3.5/4/5 in opening was wondering if any one has used it on there diesel they have one thats like 8 in long and like 6in at the base i want one but i just cant spend the 100+ for a name brand i have used other off brand things in the past for other projects and have had good luck just wondering what yall think of them
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Joined: Dec 2010
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From: Orrville, Ohio
From what I have heard (not my personal experience, so take this for what it is worth) the "reusable" type filters do not do as good a job of filtering the air for our turbo diesel engines.
You can either buy a NAPA (or Baldwin) 6637 air filter and build your own system using a 45* elbow or buy a premade kit with the parts and a nice prefilter cover like this:
Riffraff Diesel: RDP 6637 Filter Kit
Both setups highly recommended here on the site. I'll be doing one or the other myself here shortly, I just haven't decided which as of yet. The Riffraff kit is a complete solution and has the prefilter, but I am cheap, ahem I mean "thrifty", and really enjoy building my own stuff so I may just buy a 6637 online (ba;dwin 6637 filter - Google Search) or so and build my own setup.
You can either buy a NAPA (or Baldwin) 6637 air filter and build your own system using a 45* elbow or buy a premade kit with the parts and a nice prefilter cover like this:
Riffraff Diesel: RDP 6637 Filter Kit
Both setups highly recommended here on the site. I'll be doing one or the other myself here shortly, I just haven't decided which as of yet. The Riffraff kit is a complete solution and has the prefilter, but I am cheap, ahem I mean "thrifty", and really enjoy building my own stuff so I may just buy a 6637 online (ba;dwin 6637 filter - Google Search) or so and build my own setup.
Last edited by DIYMechanic; Jan 28, 2011 at 10:42 PM. Reason: added link for online filter
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From: Nanaimo B.C. Canada
you can either buy the filter and make your own or buy a package from riffraff Riffraff Diesel: RDP 6637 Filter Kit
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From: Nanaimo B.C. Canada
this is mine. its not a napa or a baldwin, mines a donaldson, same as they use on the big rigs, cost me like 35$ at the local international dealer. if you have a K&N filter in your truck, take it out and burn it, your just sand blasting your turbo.
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From: Crosby.Tx
ya ive heard to much bad about the k&n for our trucks besides price. now does the pre filter make a lot of difference i see a few like to run them is it becasue of looks? i see you dont run one 82-f150. i think im going to just make one like yall did i dont have a international dealer near by any more but i do have anapa thanks guys also does it make a difference that some kits have that neat little half box around the filter? oh and i like how you have the 6.0 for sale 82-f150 but not the 7.3 
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From: Nanaimo B.C. Canada
I did buy pre filter covers from riffraff.. I haven't had them long enough to notice an advantage yet.. I'm sure it catches some dust. Yea I love my 6.0L but my grand dad left me the 2000 350 and I can't afford to keep both and I couldent part with the 7.3 :P
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From: Avilla, IN
I did have the stock-replacement-drop-in K&N, but I switched to the filter in my signature. I think I am the only one in this site that has tried this filter. I love it! I don't have the fancy SS elbow shown above. I just cut the spout off the stock air box and this filter fit right on. Total cost is $66 + shipping. Its good for 4 yrs or 100k miles when it isn't neglected. All you have to do is blow it out, no oiling or anything like that.
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From: Ridgely, Maryland
I have the K&N intake kit and I love it but alot of talk about them not good for turbos. I just can see myself with the 6637 filter so I want to know some things about the filter you have (Amsoil EaA4095) I look it up also, but want to know how long have you used it and what you think.
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From: Western NC
Very nice engine bay, by the way.
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From: West Texas
That's still the 4 inch inlet on that one right? I think it's the same one I keep getting. I don't even keep track of the number. I just go into the filter place and say let me have it. Then bend over and they give it to me. I run donaldson everything pretty much. I had been running mobil 1 oil filters but I recently found donaldson has a much bigger one that fits and is even lower microns. I sure hope it doesn't drag the ground when I install it tomorrow. 
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