| Author | Message | ||
| Iver (Mciv)
Registered Member Username: Mciv Post Number: 30 Registered: 11-2006 Posted From: 70.69.131.252 Rating: N/A |
On the other board there was a discussion on K&N filters and how they are not good for 2 strokes. Anyone have any thoughts as to why? The P.O. of our coach installed a K&N so I bought a cleaning/restoration kit for it and re-installed it. Should I toss it and put in a paper filter?? Thanks, Iver | ||
| Dave Walker (Chrome_dome)
Registered Member Username: Chrome_dome Post Number: 68 Registered: 3-2010 Posted From: 67.174.144.159  Rating: N/A |
Shin a light through them in a dark room and look for holes. Guys on the other board were saying this. Small holes large enough to have dirt get trough. | ||
| Bruce Henderson (Oonrahnjay)
Registered Member Username: Oonrahnjay Post Number: 581 Registered: 8-2004 Posted From: 70.61.105.213  Rating: |
My experience with them goes back to the '60's. They were sold as a new development then; after I'd had one on my motorcycle for a while, another racer told me to stick my finger down the carburetor and see what I found. There was a film of dusty, gritty oil in the carburetor bore. I thought that I must have it oiled wrong so I did it again, and removed the carbs and washed them out. After two weeks, it was the same way. (This was a road bike that I used for production-class road/paved track racing, so we're not talking motocross dirty conditions here.) I've not used one since but everyone I've talked to since says that K & N has improved the filters over the years -- and they still find dusty, gritty oil film inside their intakes. (And they're pretty hard on hot-wire Mass Airflow Meters in the intakes on modern engines ... not that that makes much difference to a D/D.) I'm not saying that they don't work OK for other people on some engines, but they didn't work for me and I don't anticipate using them now. | ||
| Tim Brandt (Timb)
Registered Member Username: Timb Post Number: 553 Registered: 10-2003 Posted From: 99.122.63.218  Rating: N/A |
FWIW my 2 stroke still uses the origional oil bath filter  | ||
| Andy Wright (Wrightwy)
Registered Member Username: Wrightwy Post Number: 52 Registered: 6-2007 Posted From: 75.220.231.198 Rating: N/A |
I had one from the PO and I thought great it should work good . Not, it was to small and I changed to a larger paper filter and had alot better results FWIW I talked with clifford and he suggested going with the larger Napa . | ||
| George M. Todd (George_todd)
Registered Member Username: George_todd Post Number: 1081 Registered: 8-2006 Posted From: 99.56.240.204 Rating: N/A |
If we look closely at K & N's own data, they advertise less flow restriction, and less filter performance, (in other words, larger particles get through.) I put one in the 75 Dodge pickup that I converted from a 440 to a Cummins. It gained over two pounds of turbo pressure, compared to the stock filter, but I have no way of comparing engine wear. G | ||
| Buswarrior (Buswarrior)
Registered Member Username: Buswarrior Post Number: 1900 Registered: 12-2000 Posted From: 174.89.174.211  Rating: |
If you want more air flow, install a bigger filter, or a pair. Until K&N start advertising the longevity of the engines they are filtering, instead of the reduction in filtering that gives you freer moving air.... There is a busnut that plumbed two big Donaldson filters in to his big engine re-power. Perhaps he's on here? Just put them in where they would fit, one in a close to stock location, the other over the other side where the AC compressor used to live, and ran different lengths of plumbing, didn't matter, the engine could suck through the two of them in stereo with less resistance. If the truckers aren't using them, there's a reason... happy coaching! buswarrior | ||
| FAST FRED (Fast_fred)
Registered Member Username: Fast_fred Post Number: 1269 Registered: 10-2006 Posted From: 99.153.142.249  Rating: N/A |
If the truckers aren't using them, there's a reason... Probably that to properly service them takes TIME , and most truckers purchase PM and repairs . The old oil bath sparrow strainers are great on the highway , at speed with the engine all wound up. Our bus camper requirements are for good filtration , when on the campsite roads with blowing dust , and other scenic roads. This is usually low speed , lo rpm , precisly where the oil soakers fail. Paper filters do work , and just as with the K&N work better with a build up of dust on their surfaces. I get "outback" (on DIRT) often enough that the K&N make more sense for me. I clean and oil them in an AM , with a $10.00 kit VS replace $40 x 4 filters . For the power pole to power pole campers that use the superslab , as the coaches were designed for , the oil bath is good enough. For a couple of trips in N Canada , not My Choice. FF | ||
| Luvrbus (Luvrbus)
Registered Member Username: Luvrbus Post Number: 916 Registered: 8-2006 Posted From: 74.33.39.88 Rating: |
To each his own but I rebuilt a couple of 8v92t that owners ran the K&N to take the debate out of this pull oil samples the silica numbers will be high on a K&N vs paper most of the time outside the limits and you cannot use a oil bath on a turbo engine.For a DD 2 strokes turbo the ECO system is the best on the market good luck | ||
| john w. roan (Chessie4905)
Registered Member Username: Chessie4905 Post Number: 1943 Registered: 10-2003 Posted From: 71.58.71.157  Rating: N/A |
GM has a service bulletin out from about two or three years ago about those K&N type air filters as to causing problems with the Mas Air flow Sensor. They didn't necessarily single out K&N; just those style of air filters. | ||
| Tim Brandt (Timb)
Registered Member Username: Timb Post Number: 554 Registered: 10-2003 Posted From: 99.122.63.218 Rating: N/A |
Thats a fact Chessie. I have seen it a lot in gasoline engines once you start modifying them for HP. I and a couple other guys I knew supercharged our 4.6 litre Tbirds. I used a stock paper element out of a mustang on mine and the other guys used a K&N which tuned into an expensive mistake. Long story short the oil migrated to the hot wire on the Mass Air meter which caused him to go lean under boost and he ended up destroying a couple pistons in the process | ||
| Iver (Mciv)
Registered Member Username: Mciv Post Number: 31 Registered: 11-2006 Posted From: 70.69.131.252 Rating: N/A |
"For a DD 2 strokes turbo the ECO system is the best on the market" Clifford, could you elaborate on the ECO system please? Thanks, Iver. | ||
| Iver (Mciv)
Registered Member Username: Mciv Post Number: 32 Registered: 11-2006 Posted From: 70.69.131.252 Rating: N/A |
I see that both Racor and Donaldson have ECO filters. Any thoughts on what model would work on a 8v92? Thanks, Iver. | ||
| Luvrbus (Luvrbus)
Registered Member Username: Luvrbus Post Number: 918 Registered: 8-2006 Posted From: 74.33.39.88 Rating: N/A |
takes a a 1500 cfm Iver chose the inlet and outlet that fits your bus can also be bought at NAPA they are a Parker design made by a lot of people now you won't be sorry the 8v92 loves that filter good luck (Message edited by luvrbus on August 10, 2010) | ||
| Jack Fids (Jack_fids)
Registered Member Username: Jack_fids Post Number: 121 Registered: 1-2009 Posted From: 69.171.160.26  Rating: N/A |
"takea a 1500 cfm Iver chose the inlet and outlet that fits your bus can also be bought at NAPA" Could that be translated in standard English without much problem for those of us not literate in that particular language? | ||
| Luvrbus (Luvrbus)
Registered Member Username: Luvrbus Post Number: 919 Registered: 8-2006 Posted From: 74.33.39.88 Rating: N/A |
Sure 1500 cubic feet per minute flow with a 5 to 7 H20 restriction inlet and outlet of 7 inches reduced at the turbo | ||
| Tom Christman (Tchristman)
Registered Member Username: Tchristman Post Number: 238 Registered: 1-2006 Posted From: 66.218.33.156 Rating: |
K&N stopped making their commercial grade air filters-why? Passing too much dirt. Use a good name brand air filter-like Donaldson, Baldwin, etc. And NEVER blow out the paper air filter to try to get more life out of it!! Blowing it out creates small holes in the paper element allowing dirt in. When the air filter needs replacement (you should have a air restriction indicator on the intake side of the air filter), buy a new air filter. $80.00 is a lot cheaper then an engine overhaul. Good Luck, TomC | ||
| Jack Fids (Jack_fids)
Registered Member Username: Jack_fids Post Number: 126 Registered: 1-2009 Posted From: 69.171.160.0 Rating: N/A |
Thanks Luvrbus! | ||
| Roger Baughman (Roger)
Registered Member Username: Roger Post Number: 178 Registered: 11-2006 Posted From: 69.232.68.74  Rating: N/A |
What does ECO stand for? Thanks, Roger | ||
| Roger Baughman (Roger)
Registered Member Username: Roger Post Number: 179 Registered: 11-2006 Posted From: 69.232.68.74 Rating: N/A |
What does ECO stand for? I was thinking of installing a 120acv blower in the air inlet between the filter and the engine intake to use on those steep hills to get more speed. I would like to hear what anyone here thinks of my idea. Probly not a good one, but I would like to know any way. I have a 8v71, no turbo. Thanks Roger | ||
| Iver (Mciv)
Registered Member Username: Mciv Post Number: 33 Registered: 11-2006 Posted From: 70.69.131.252 Rating: N/A |
I found a couple of filters which were 1500cfm. ECO-II Donaldson and Parker numbers. But these filters had no intake tube. Just a side opening for intake and an end outlet connection. So I looked a little further and found: Parker ECO LL400 820 004. This one was 1500cfm and has a side inlet and a 7" end outlet. This would fit my system quite well. I just have to adjust some of my piping. This is a disposable filter. No replacement filters etc. Around $100. cdn.. Clifford, does this sound about right?? Thanks, Iver | ||
| Luvrbus (Luvrbus)
Registered Member Username: Luvrbus Post Number: 920 Registered: 8-2006 Posted From: 74.32.80.29 Rating: N/A |
Iver either model will work for you the one with no intake pipe requires the hood that you buy one time it snaps on the filter cost about 45 us if your intake hose is hard to remove that the best way to go. I have used both but on my Eagle the intake was a pain so I used the hooded type I could just un snap the filter hood and undo the turbo clamp and slide it out. Your 8v92 is going to hug you BTW that is not a bad price for that filter they cost 125 us lol good luck (Message edited by luvrbus on August 12, 2010) | ||
| Bruce Henderson (Oonrahnjay)
Registered Member Username: Oonrahnjay Post Number: 582 Registered: 8-2004 Posted From: 68.33.62.138 Rating: N/A |
Roger, it's called "ECO" because it's "Green" and therefore it's A Good Thing and they can charge a lot more money for it because it's good for the trees and will prevent oil spills, etc. |
