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Car Forum / Volvo Cars / April 2005K n N air filter question
I have a 1989 DL Volvo. I put in one of these and have experienced the engine running smoother as well as a little more pep. I had read on this message board people saying that the filter can hurt the engine is this true? I thought this type of filter cleans the air better and allows more air into the system....Does it damage the car? Pete I have one on a 1999 S-70. Haven't noticed any problems. j > I have a 1989 DL Volvo. I put in one of these and have experienced the > engine running smoother as well as a little more pep. I had read on this [quoted text clipped - 5 lines] > > Pete It might hurt the engine if you don't re-oil it correctly when you clean it out. Too much can screw up MAF sensors and too little can cause dirt not to be caught. I found it did nothing in my Golf TDI so we stuck with the paper filters in the Volvo (we were considering them for all three of the cars because you never have to get new filters, just clean them... we only bought one for the Golf because it does more KMs per year then both the other cars combined - so it saves money on filters, at least the overpriced ones from the dealer). >I have a 1989 DL Volvo. I put in one of these and have experienced the >engine running smoother as well as a little more pep. I had read on this [quoted text clipped - 5 lines] > > Pete i have been running a k&n cone filter for two years...and 30k miles...no problems yet...my 940 has 240,000 miles on it......i think i must have removed about 5 lbs of plastic on the facory air box system that i replaced... I believe they allow better air flow but I've also heard that they let more dirt through as well. >I have a 1989 DL Volvo. I put in one of these and have experienced the >engine running smoother as well as a little more pep. I had read on this [quoted text clipped - 5 lines] > > Pete That's usually the trade off with all filters. > I believe they allow better air flow but I've also heard that they let more > dirt through as well. [quoted text clipped - 6 lines] > > I thought this type of filter cleans the air better and allows more air > > into the system....Does it damage the car? Haven't you guys heard, K&N do a flat filter for the airbox that is just as good and what's more is quiet as well. Cheers, Peter. > That's usually the trade off with all filters. > [quoted text clipped - 10 lines] >> > I thought this type of filter cleans the air better and allows more air >> > into the system....Does it damage the car? Noisy air filters?, that's really getting down to it. > Haven't you guys heard, K&N do a flat filter for the airbox that is just as > good and what's more is quiet as well. [quoted text clipped - 15 lines] > >> > I thought this type of filter cleans the air better and allows more air > >> > into the system....Does it damage the car? My 89 780 turbo has a foam filter inside the box, is this supposed to be washable, and should it be oiled after washing? Looks like the original filter, this car has over 170k miles on it, and a broken odometer, so real mileage is not known. Would it be feasible/adviseable to replace with one of the aftermarket filters like the K&N mentioned? I am not concerned about more noise, and performance increase would be a plus for this car. Just wondered if I should investigate upgrading to one of these higher flow units or stick to the original. >Noisy air filters?, that's really getting down to it. > [quoted text clipped - 21 lines] >air >> >> > into the system....Does it damage the car? > My 89 780 turbo has a foam filter inside the box, is this supposed to > be washable, and should it be oiled after washing? [quoted text clipped - 10 lines] > Just wondered if I should investigate upgrading to one of these higher > flow units or stick to the original. The original type filters are plenty big, there's almost no restriction across them. By foam, are you talking about a thin piece that appears to be glued to the lid? If so, that's just there to eliminate a whoosh sound. If the actual element is foam, then its care depend on who makes it and what they recommend.  SignatureMike F. Thornhill (near Toronto), Ont. Replace tt with t (twice!) and remove parentheses to email me directly. (But I check the newsgroup more often than this email address.) The foam piece I'm talking about is in the lower half of the air box, probably about 4 inches thick, held in by a metal frame that wedges against the interior of the box. Although it was fairly clean, it looks to be the original. Wondered if I should convert it before the foam disntegrates... >> My 89 780 turbo has a foam filter inside the box, is this supposed to >> be washable, and should it be oiled after washing? [quoted text clipped - 16 lines] >sound. If the actual element is foam, then its care depend on who makes >it and what they recommend. > The foam piece I'm talking about is in the lower half of the air box, > probably about 4 inches thick, held in by a metal frame that wedges [quoted text clipped - 3 lines] > > Wondered if I should convert it before the foam disntegrates... Actually, now that you mention it, that foam is also for sound deadening. I'd forgotten about it as it doesn't usually give problems, and it's below the air filter, so if it breaks up, it doesn't clog the air mass meter screen like the piece on the lid. With the airbox lid off, the air filter should hide this from view until removed - is it possible there's no air filter at all in your car? SignatureMike F. Thornhill (near Toronto), Ont. Replace tt with t (twice!) and remove parentheses to email me directly. (But I check the newsgroup more often than this email address.) Mike, that's what it looks like. I thought there was a large area of unused space here inside the airbox, that's why. Since my old 76 turbo did not have the foam addition, I thought this one was the air filter, but apparently not. Looks like the foam was all this had for filtration. I better get one in there now, or convert; don't want that dirty air getting into this thing. Thanks for the observation! >> The foam piece I'm talking about is in the lower half of the air box, >> probably about 4 inches thick, held in by a metal frame that wedges [quoted text clipped - 10 lines] >off, the air filter should hide this from view until removed - is it >possible there's no air filter at all in your car? > Mike, that's what it looks like. > [quoted text clipped - 10 lines] > > Thanks for the observation! If you use a K&N filter be sure to follow the oiling instructions exactly. Excessive oiling of the filter will insure that fine oil particles will deposit on the hot wire/foil for the air mass meter and cause premature failure. Bob |
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