K&N Filters The Straight Scoop
11-10-2001, 07:54 PM
#62
Ed,
You had me worried for a moment or three.
Just pulling an unannounced attitude check,
you seem to be faring well.
Seriously, now, the Nair worked but how do I get rid of the sludge?
Not tinkering today as we had a little breeze blow a good part of Amarillo and Lubbock into/onto Midland yesterday. Probably because of Pattycakes mirror like shine from her Thursday waxing. In any case, the cats will remain well fed and undisturbed until after I shovel some of Northern Texas off of Pattycakes.
Later, Keep em' rolling
John S. & Pattycakes
P.S. I like cats, really! They taste like chicken...
You had me worried for a moment or three.
Just pulling an unannounced attitude check,
you seem to be faring well.
Seriously, now, the Nair worked but how do I get rid of the sludge?
Not tinkering today as we had a little breeze blow a good part of Amarillo and Lubbock into/onto Midland yesterday. Probably because of Pattycakes mirror like shine from her Thursday waxing. In any case, the cats will remain well fed and undisturbed until after I shovel some of Northern Texas off of Pattycakes.
Later, Keep em' rolling
John S. & Pattycakes
P.S. I like cats, really! They taste like chicken...
07-04-2002, 10:59 AM
#63
Burning Brakes
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After reading all this awful stories about bug wings etc. underneath the filter I checked my K&N filter today.
Everything looks perfect no oily film and no 'bug wings' under the filter.
But at the top side there are many bugs, leaves etc.
When I got my K&N filter 3 years ago I marked the TOP with a red spot - K&N forgot this, and that important, without this marking you easily risk to turn the upside down when you inspect the filter - K&N ought to mark new filter in future!!!!!
I have new rubber straps and are careful when mounting the top of the filter box - Remember to fit into the air hose from the air pump valve and tighten the hose spanner.
Oily film must be due to too mush oil on the filter when mounting!
Regards from Erik in Denmark
Everything looks perfect no oily film and no 'bug wings' under the filter.
But at the top side there are many bugs, leaves etc.
When I got my K&N filter 3 years ago I marked the TOP with a red spot - K&N forgot this, and that important, without this marking you easily risk to turn the upside down when you inspect the filter - K&N ought to mark new filter in future!!!!!
I have new rubber straps and are careful when mounting the top of the filter box - Remember to fit into the air hose from the air pump valve and tighten the hose spanner.
Oily film must be due to too mush oil on the filter when mounting!
Regards from Erik in Denmark
07-05-2002, 01:21 AM
#64
Burning Brakes
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Hi Sharks:
Why did I buy the recharger filter care service kit along with the filter? The instructions state that it comes pre-oiled. SERVICE EVERY 50-100,000 MILES ON STREET DRIVEN APPLICATIONS. Does this really mean 50,000-100,000 miles?
Does this also mean that most people should never oil their filters?
Is it possible that many people abuse the oil service way beyond the manufacturer’s specifications?
Why did I buy the recharger filter care service kit along with the filter? The instructions state that it comes pre-oiled. SERVICE EVERY 50-100,000 MILES ON STREET DRIVEN APPLICATIONS. Does this really mean 50,000-100,000 miles?
Does this also mean that most people should never oil their filters?
Is it possible that many people abuse the oil service way beyond the manufacturer’s specifications?
07-05-2002, 10:42 AM
#66
Three Wheelin'
I've been following this and DR's thread on sensor wire fouling.
One area to look at- How does the air pump fit into this discussion? It does connect to the airbox BELOW the air filter.
The air pump does have it's own filter system, but how well does it work?
How about a leaky hose or clamp between pump and filter box?
What about those who have removed their pumps? Is the inlet on the airbox properly capped?
Greg
"Thinking outside the (air) box."
One area to look at- How does the air pump fit into this discussion? It does connect to the airbox BELOW the air filter.
The air pump does have it's own filter system, but how well does it work?
How about a leaky hose or clamp between pump and filter box?
What about those who have removed their pumps? Is the inlet on the airbox properly capped?
Greg
"Thinking outside the (air) box."
07-05-2002, 06:45 PM
#67
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The air pump sucks air and blows it into the exhaust...It probably doesnt have much to do with the air filter for the engine.
Yeah, I found a crispy looking bug wing on the wire in my MAF- I'm afraid to try to pick it off, though I've thought of trying to spray some solvent on it to remove it.
[No jokes about hot wing sauce, please....]
Really, my K&N didn't fit right. It came with the car when I bought it, and I like the fact that you don't simply throw these away- you can wash it out once per year, re-oil it, and off you go. Up to this point, I thought there was a small increase in high RPM power, but from what I've heard lately, this is not the case. As to figuring out which side is which, I've never seen any colored marks on my filter to tell me which side is which. It is obvious- I find all sorts of insect particles and dirt on the filthy side.
I was unhappy about one thing, however, when I first removed it for cleaning. It appeared to be slightly big! I had to trim the edges with a razor blade in order to make the top half of the filter box fit it properly.
I'm concerned about the problem that is talked about in another thread in which oil from the filter gets on the MAF wire and causes erroneous readings; I think I'm going to replace the K&N with a paper filter.
Normy!
'85 S2 5 speed
Yeah, I found a crispy looking bug wing on the wire in my MAF- I'm afraid to try to pick it off, though I've thought of trying to spray some solvent on it to remove it.
[No jokes about hot wing sauce, please....]
Really, my K&N didn't fit right. It came with the car when I bought it, and I like the fact that you don't simply throw these away- you can wash it out once per year, re-oil it, and off you go. Up to this point, I thought there was a small increase in high RPM power, but from what I've heard lately, this is not the case. As to figuring out which side is which, I've never seen any colored marks on my filter to tell me which side is which. It is obvious- I find all sorts of insect particles and dirt on the filthy side.
I was unhappy about one thing, however, when I first removed it for cleaning. It appeared to be slightly big! I had to trim the edges with a razor blade in order to make the top half of the filter box fit it properly.
I'm concerned about the problem that is talked about in another thread in which oil from the filter gets on the MAF wire and causes erroneous readings; I think I'm going to replace the K&N with a paper filter.
Normy!
'85 S2 5 speed
07-05-2002, 11:04 PM
#68
Three Wheelin'
OOPS!! Let me ammend my previous post-
I posted- [quote] One area to look at- How does the air pump fit into this discussion? It does connect to the airbox BELOW the air filter. <hr></blockquote>
I should have said ABOVE. That's where the hose connects. I was thinking about the "null" nipple below the filter on the box which looks like a nipple, but on the 86 is sealed.
Normy's quote- [quote]The air pump sucks air and blows it into the exhaust...It probably doesnt have much to do with the air filter for the engine. <hr></blockquote>
Normy, look at shop manual page 24-102 There is a blowoff switching valve which will allow air pump flow into the air cleaner. The nipple for that hose is on the lower airbox, above the filter.
Supm'ptn like this-
Being above the air filter in the air box may eliminate my theory of possible ingress of forign matter from the air pump, but it appears that air pump air can get to the air filter box. Could there be enough pressure from the air pump to force some forign matter through the air filter?
Greg
I posted- [quote] One area to look at- How does the air pump fit into this discussion? It does connect to the airbox BELOW the air filter. <hr></blockquote>
I should have said ABOVE. That's where the hose connects. I was thinking about the "null" nipple below the filter on the box which looks like a nipple, but on the 86 is sealed.
Normy's quote- [quote]The air pump sucks air and blows it into the exhaust...It probably doesnt have much to do with the air filter for the engine. <hr></blockquote>
Normy, look at shop manual page 24-102 There is a blowoff switching valve which will allow air pump flow into the air cleaner. The nipple for that hose is on the lower airbox, above the filter.
Supm'ptn like this-
Being above the air filter in the air box may eliminate my theory of possible ingress of forign matter from the air pump, but it appears that air pump air can get to the air filter box. Could there be enough pressure from the air pump to force some forign matter through the air filter?
Greg
07-06-2002, 12:02 AM
#69
Nope! Unless the filter is not properly seated, or you set the factory glued...er oiled filter down on something which then stuck to the bottom of the filter..........
07-09-2002, 04:47 PM
#70
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This topic has more lives than Dracula's cat. I found junk under my filter with my OEM filter an my K&N. Now that I've gotten the airbox clamping better (still using the K&N) it's clean as a wistle. No oil on the maf just good solid performance. And with all due respect to Ed, who has probably forgot more about 928's than I know, there are electrostatic air filters that are extremely effective with NO filter element. A hair would easily go through it, so would a rock. It's a matter of effectiveness for a given purpose. I believe the test results in the email I recieved from the guys at K&N was not BS but real data. My K&N stays.
07-09-2002, 05:29 PM
#71
[quote]Originally posted by Carlos:
<strong>I believe the test results in the email I recieved from the guys at K&N was not BS but real data.</strong><hr></blockquote>
If these were test results comparing a K&N filter on a Porsche 928, to the stock Porsche filter on a 928, I'd definitely like to see them. If they were results from a test done on anything else, don't bother. They aren't worth anything then as far as I'm concerned.
<strong>I believe the test results in the email I recieved from the guys at K&N was not BS but real data.</strong><hr></blockquote>
If these were test results comparing a K&N filter on a Porsche 928, to the stock Porsche filter on a 928, I'd definitely like to see them. If they were results from a test done on anything else, don't bother. They aren't worth anything then as far as I'm concerned.
07-09-2002, 09:31 PM
#73
Yes, "physiks is physiks," even on a 928. Using performance gain results gotten by replacing the stock inefficient filter on an something like an '86 Yugo to say that it will do the same when you replace the efficient filter on the 928 isn't the same in my book. But then I'm sure K&N's marketing department is well aware of that.
