K&N Air Filters- need a shorter one
01-23-2009, 07:31 PM
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K&N Air Filters- need a shorter one
I've got a drop base (1.5 I think) air filter housing and an Edlebrock cast aluminum top. The ones with fake rivets around the outside edge. The filter is a K&N and I think it's a 4" tall unit.
Problem is that the fake rivets around the edge of that air filter housing top are hitting the hood. The whole upper housing has created a nice imprint in the hood insulation. That doesn't bother me. But one of the rivets has gone & put a nice sized notch in the hood itself. There's another that has also gone through the insulation and is making a notch in the hood too. Both of 'em are on the drivers side of the hood obviously from the way I drive it ;-)
So I need a shorter K&N but can't find one. Actually this one is a K&N style filter but made by SB products. If I could find a filter that was 1/2" shorter and still 13" around, I'd be happy as can be. But all I can find that are like that, are paper
filters and I don't want to strangle my stroker. <Gawd can I say that here?> 
Does anyone have any ideas or part numbers? I'm sold on the fabric filter style and have plenty of K&N oil here to maintain them with. If I could get a shorter filter then I could just buy another hood insulation pad and forget the grooves in the hood were ever there.
Problem is that the fake rivets around the edge of that air filter housing top are hitting the hood. The whole upper housing has created a nice imprint in the hood insulation. That doesn't bother me. But one of the rivets has gone & put a nice sized notch in the hood itself. There's another that has also gone through the insulation and is making a notch in the hood too. Both of 'em are on the drivers side of the hood obviously from the way I drive it ;-)
So I need a shorter K&N but can't find one. Actually this one is a K&N style filter but made by SB products. If I could find a filter that was 1/2" shorter and still 13" around, I'd be happy as can be. But all I can find that are like that, are paper
filters and I don't want to strangle my stroker. <Gawd can I say that here?> Does anyone have any ideas or part numbers? I'm sold on the fabric filter style and have plenty of K&N oil here to maintain them with. If I could get a shorter filter then I could just buy another hood insulation pad and forget the grooves in the hood were ever there.
Last edited by SanDiegoPaul; 01-23-2009 at 07:33 PM.
01-23-2009, 07:44 PM
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If you have one 4" tall, just go with a std height 3" filter, they are the most common anyway. If you can't find one at an Autoparts Store, just order from Summit or Jegs. I don't recall hearing of a 3 1/2" filter.
But by clicking on your pictures and taking a closer look, I'd say you have a 3" filter on there now. I compared it to a picture of my 4" filter, and yours definitely is shorter than mine. Just take a tape measure and measure the height, you'll see. That being the case, you'll need something shorter than 3". You will likely be out of luck getting a K&N shorter than a std 3", but you could check with them and see. If no luck there, just go to any Autoparts Store and get a 2" tall paper type filter (I actually have one on a car right now), and though not ideal for air flow, you'll be good to go in general.
But by clicking on your pictures and taking a closer look, I'd say you have a 3" filter on there now. I compared it to a picture of my 4" filter, and yours definitely is shorter than mine. Just take a tape measure and measure the height, you'll see. That being the case, you'll need something shorter than 3". You will likely be out of luck getting a K&N shorter than a std 3", but you could check with them and see. If no luck there, just go to any Autoparts Store and get a 2" tall paper type filter (I actually have one on a car right now), and though not ideal for air flow, you'll be good to go in general.
Last edited by 540 RAT; 01-23-2009 at 07:51 PM.
01-23-2009, 08:02 PM
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If you have one 4" tall, just go with a std height 3" filter, they are the most common anyway. If you can't find one at an Autoparts Store, just order from Summit or Jegs. I don't recall hearing of a 3 1/2" filter.
But by clicking on your pictures and taking a closer look, I'd say you have a 3" filter on there now. I compared it to a picture of my 4" filter, and yours definitely is shorter than mine. Just take a tape measure and measure the height, you'll see. That being the case, you'll need something shorter than 3". You will likely be out of luck getting a K&N shorter than a std 3", but you could check with them and see. If no luck there, just go to any Autoparts Store and get a 2" tall paper type filter (I actually have one on a car right now), and though not ideal for air flow, you'll be good to go in general.
But by clicking on your pictures and taking a closer look, I'd say you have a 3" filter on there now. I compared it to a picture of my 4" filter, and yours definitely is shorter than mine. Just take a tape measure and measure the height, you'll see. That being the case, you'll need something shorter than 3". You will likely be out of luck getting a K&N shorter than a std 3", but you could check with them and see. If no luck there, just go to any Autoparts Store and get a 2" tall paper type filter (I actually have one on a car right now), and though not ideal for air flow, you'll be good to go in general.
I didn't take the element out of the housing to measure, but it looks like a hair over 3.5" tall as it sits. 3 5/8 to be more precise. So if that's a 3" unit, then the thickness of the top & bottom of the housing combined is well over 1/2 inch? Doesn't sound right.
01-23-2009, 08:12 PM
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Follow up: Just took the thing apart & measured it. It's 14" x 3 1/2" almost exactly. So a 14x3 would work just fine if I can find it ...
Called Summit and gave 'em the measurements - they have a 14x3 unit but it's white. Never seen a K&N that was white but hey, if it saves my hood then I'm in! I'll post a pic when I get the new one.
Called Summit and gave 'em the measurements - they have a 14x3 unit but it's white. Never seen a K&N that was white but hey, if it saves my hood then I'm in! I'll post a pic when I get the new one.
Last edited by SanDiegoPaul; 01-23-2009 at 08:17 PM.
01-23-2009, 08:55 PM
#5
Drifting
Follow up: Just took the thing apart & measured it. It's 14" x 3 1/2" almost exactly. So a 14x3 would work just fine if I can find it ...
Called Summit and gave 'em the measurements - they have a 14x3 unit but it's white. Never seen a K&N that was white but hey, if it saves my hood then I'm in! I'll post a pic when I get the new one.
Called Summit and gave 'em the measurements - they have a 14x3 unit but it's white. Never seen a K&N that was white but hey, if it saves my hood then I'm in! I'll post a pic when I get the new one.
01-24-2009, 08:16 AM
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K&N will custom make any height you want, I had mine made taller. I believe it was a $35 extra charge, that was a couple years ago. It did take several weeks to get though.
01-24-2009, 12:03 PM
#8
Melting Slicks
one thing you can do, is get rid of the hood insulation. I took mine off a couple of years ago and wished I had done it sooner. I thought the insulation was to keep heat away from the hood....found out it was to muffle the engine sound. I have a drop base with a 3" filter and I have 1/2 clearance between the hood and the airfilter
Good Luck!
Good Luck!
01-24-2009, 02:46 PM
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I went throught the same thing you are experiencing. I used a K&N #23740 filter, which is a 2 inch high filter along with the K&N top, which is also a filter, part number C8003. A dropped base is also necessary to help achieve hood clearance. This combination has worked very well for me on a 72 small block.
These pieces are available through Summit or Jegs. I was fortunate as we have a speed shop in town and I know the owner. He was very knowledgable of this problem and helped me out with these 2 pieces. Approximately $200.00 for both.
These pieces are available through Summit or Jegs. I was fortunate as we have a speed shop in town and I know the owner. He was very knowledgable of this problem and helped me out with these 2 pieces. Approximately $200.00 for both.
