Neil Marshall Posted September 7, 2005 Share Posted September 7, 2005 I fitted a K & N filter to my Safari snorkel equipped 300 TDi yesterday. I noticed that I had not sealed the water release valve that hangs off the bottom of the can lid when I fitted the snorkel two years ago, although I'm sure that Safari recommend removing any possible point of water ingress. Smacky bottom perhaps. I re-sealed the spotwelded seam on the can, and the lid, but before I seal the valve, are there any benefits of having one drain point in the air feed? By the way, definite improvements in performance with the K &N filter fitted - turbo spins noticably quicker and there is more in-gear acceleration....and of course you don't have to buy a replacement every year [cleaning required every 50,000 miles]. Good investment at £65. So do I seal up the valve?? Neil Quote Link to comment Share on other sites More sharing options...
Michele Posted September 7, 2005 Share Posted September 7, 2005 Yes! Quote Link to comment Share on other sites More sharing options...
landi41 Posted September 7, 2005 Share Posted September 7, 2005 Yes! Yes, Yes, whether you have a snorkle or not, especially if the canister is vertical as in my 110 petrol......silly damn valve anyway Quote Link to comment Share on other sites More sharing options...
JST Posted September 7, 2005 Share Posted September 7, 2005 i sealed mine by streching a piece of inner tube across the the metal hole (after removing the dump vlve (the rubber bit)) and held it in place with cable ties. no probs as yet. my snorkel system runs with no water drainage point. i ahev often wondered if this is a good or bad thing - travelling in the rain for example some water most go down the intake. 2yrs and no problems as yet. Quote Link to comment Share on other sites More sharing options...
Neil Marshall Posted September 7, 2005 Author Share Posted September 7, 2005 Glad you mentioned the rubber idea - I have a piece of inner tube around the lid joint, giving belt and braces with the silicone seal. Neil Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted September 8, 2005 Share Posted September 8, 2005 I'm sorry if I have to keep repeating myself, but I reckon the K&N filter is a terrible thing. I had one fitted to my 300tdi for 60 000 kms (along with a Mantec snorkel) and it just about wrecked my engine. The bores were completely stuffed, though being a cheapskate I managed to get by with some honing and a set of new rings. Maybe the K&N is a good idea in the UK where it rains all the time, but whatever you do do not go somewhere with a dusty climate. I still reckon the only way to clean a K&N is as follows: 1) place on driveway 2) soak in petrol 3) light with match IMHO you would be as well off removing your air cleaner altogether for increased performance Quote Link to comment Share on other sites More sharing options...
Neil Marshall Posted September 8, 2005 Author Share Posted September 8, 2005 IMHO you would be as well off removing your air cleaner altogether for increased performance Why not say what you mean Jim!! I understand why you have a concern - by design, the filter passes more through than a dense paper item, but it is not as transparent as a Series filter. As we tend not to live in a dust bowl in the UK, it's horses for courses. Neil Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted September 8, 2005 Share Posted September 8, 2005 I'm sticking with paper ta: http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm Quote Link to comment Share on other sites More sharing options...
JST Posted September 8, 2005 Share Posted September 8, 2005 still 96% odd of dirt stopped. i think its due to personal prefence, a suggestion for home testing i have heard is the £29 test machine of a white cloth ove the end of a hoover on suction then test by sucking air through std and then K&N filters against how much mcuh ends up on the cloth. ok vaccum then as hoover as we know is a trade name and i know you cant get a decent hoover/cleaner for £29 but the tests the same. Quote Link to comment Share on other sites More sharing options...
JST Posted September 8, 2005 Share Posted September 8, 2005 still 96% odd of dirt stopped. i think its due to personal preference, a suggestion for home testing i have heard is the £29 test machine of a white cloth ove the end of a hoover on suction then test by sucking air through std and then K&N filters against how much mcuh ends up on the cloth. ok vaccum then as hoover as we know is a trade name and i know you cant get a decent hoover/cleaner for £29 but the tests the same. Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted September 8, 2005 Share Posted September 8, 2005 One of the reason I get angry about K&N's was that I fitted their sticker to the side of my LR, next to the air intake. About a week later, a T@y@t@ driver approached me at a petrol station and told me that the K&N would stuff up my engine. Of course, I didn't believe him ... Yes, it is horses for courses. If you move from rainy UK to somewhere a bit hotter and dustier, or even go somewhere like that on holiday, or there is a sudden heat wave and drought (haha), just swop back your old paper filter for a while. I used to run bikes with no filter at all in England, they went well but the intake noise was annoying. None of those engines lasted very long anyway Here are my bores at 166 000 kms after 80k with the K&N. Compression was down to 15-17 bar (instead of 24) And this shows the lip at the top of the bore, after honing: The ridge was too deep to hone out. The engine is now on 220k and running fine. Quote Link to comment Share on other sites More sharing options...
BogMonster Posted September 8, 2005 Share Posted September 8, 2005 ouch! compared to which which I have seen 300Tdis with up around 100,000 miles on and still have the original hone marks in the bores (when used with an original air cleaner element and properly serviced) Quote Link to comment Share on other sites More sharing options...
LR90 Posted September 8, 2005 Share Posted September 8, 2005 Must admit air filters don't seem very expensive and they're easy to change (and easier than messing on cleaning them). Tend to just change mine out every year usually pre mot to help the emmisions. Quote Link to comment Share on other sites More sharing options...
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