View Full Version : K&N oil filters????

21st July 2006, 20:33
any opinions on these I like the nut on the end and its what my indy sells

21st July 2006, 20:40
I changed over to the K&N 170c filter with the first oil change I did on my own along with Amsoil 20W-50 Synthetic. The next oil change sure will be easier with the nut on the filter. The filter has a check valve I believe to keep oil in the line, maybe all filters have the check. Another piece of chrome to polish.

21st July 2006, 21:11
Any filter used should have the correct check valve for the specific engine.

I'm not a fan of the 10 micron (or heaven forbid newer 5 micron) filters for the EVO engines, and prefer to use the "regular" 30 micron filters that were produced especially for the EVO's when they first started putting them in the BT's.

I use either the HD 63796-77A (standard size) or extended length 63813-90T chrome filters on my Dyna and 1200C EVO engines. Both are 30 micron filters.

In the summer (constant 100+ days around here) I normally run the longer 63813-90T filter. I allows you to run a little additional oil, but more important it has a much larger surface area which should help somewhat in cooling the oil. (I'm sure it does as much good as those 'slip on' finned covers some put on the standard short filters).

Installation and removal is a snap, as Harley (and JP Cycles) sells a ribbed filter 'wrench' that fits on a standard 1/4 drive. ;)




23rd July 2006, 01:05
Yep, I also use one of those cap type of filter wrenches. AMSOIL has new filters available.

23rd July 2006, 01:43
Has anyone seen the new 5 micron oil filters from H-D?

http://www.harley-davidson.com/media/images/productphotos/PNA/63800_07_M_2058f.jpg (http://www.harley-davidson.com/gma/gma_product.jsp?PRODUCT%3C%3Eprd_id=84552444876982 0&FOLDER%3C%3Efolder_id=2534374302290363&ASSORTMENT%3C%3East_id=2534374302290363&bmUID=1153614140339&bmLocale=en_US)http://a1276.g.akamai.net/7/1276/734/ff103d3dd55380/resource.harley-davidson.com/media/images/productphotos/PNA/63801_07_M_20591.jpg (http://www.harley-davidson.com/gma/gma_product.jsp?PRODUCT%3C%3Eprd_id=84552444876982 1&FOLDER%3C%3Efolder_id=2534374302290363&ASSORTMENT%3C%3East_id=2534374302290363&bmUID=1153614140339&bmLocale=en_US)http://a1276.g.akamai.net/7/1276/734/9e41b6c760888c/resource.harley-davidson.com/media/images/productphotos/PNA/63802_07_M_20593.jpg (http://www.harley-davidson.com/gma/gma_product.jsp?PRODUCT%3C%3Eprd_id=84552444876982 2&FOLDER%3C%3Efolder_id=2534374302290363&ASSORTMENT%3C%3East_id=2534374302290363&bmUID=1153614140339&bmLocale=en_US)http://a1276.g.akamai.net/7/1276/734/b5b04fe9ff6e80/resource.harley-davidson.com/media/images/productphotos/PNA/63834_07_M_20598.jpg (http://www.harley-davidson.com/gma/gma_product.jsp?PRODUCT%3C%3Eprd_id=84552444876981 8&FOLDER%3C%3Efolder_id=2534374302290363&ASSORTMENT%3C%3East_id=2534374302290363&bmUID=1153614791288&bmLocale=en_US)

DEFINITIVE5 Filtration System

Stylized motor oil filtration system featuring integral pressure relief and anti-drain back valves and a replaceable filter element. The removable end cover allows for easy drain, preventing used fluid from draining onto the crankcase. The technologically advanced synthetic filter media provides nominal 5 micron (1 micron = .001mm) filtration which retains dust, soot and other solid matter with low internal pressure drop. The used filter element is more environmentally friendly as it does not contain the metal structure of a spin-on filter.


23rd July 2006, 04:37
I've got one of those "SuperPremium 5" Chrome Oil Filters sitting right here..

Part Number 63798-99A.

From my point of view it would be crazy to use a 5 micron filter on an EVO engine.

From what I can find out they were designed for the newer twin cam BT engines, but even the guys I know that own those won't use this filter....

If you or anyone wants this 5 micron filter give me a couple bucks for postage and you can have it.. LoL

23rd July 2006, 06:03
Back to the k&n filters, i use them most of the time and there more than likely as good as any except there kinda pricey. BTW all filters have pressure releif valves but only the better ones have the anti drain back valve.

23rd July 2006, 06:52
What is the problem with using a 5 micron filter on an Evo Sportster?


23rd July 2006, 07:42
What is the problem with using a 5 micron filter on an Evo Sportster?

I don't know how much truth and science there is to it but I've read quite a few times the 5 micron filters don't allow thick cold oil to pass through them very well. The oil passes through the relief valve until it gets up to a certain temp where it is thin enough to pass through the filter medium.

In colder climates this can mean the oil rarely gets filtered.

Dunno how much truth there is to this though :dunno

23rd July 2006, 14:30
Maybe we need a 5 micron filter with a clear cover to see how it works when it's cold.