View Full Version : K&N air filters

09-19-2016, 10:02 AM
Took a chance ordering some filters from K&N, hoping to replace the paper filter media on my 3 bolt blue SU filters, and it paid off! K&N part # E-9144 will fit almost perfectly ($30/ea from K&N). Cut through old paper element, seperated the halves, and was able to remove the paper and peel the old glue, leaving the metal housing pieces. With a little tucking on a flat surface, new filters fit snugly in housing. New combo is slightly thinner, but shouldn't need more than a washer to install using original bolts, and should give much better flow while retaining mostly stock look.

09-23-2016, 04:23 PM
A recent Amazon acquisition came to me with 2-bolt K&N filters, my first experience with them after many years with various OEM-type sets.
I found them to be quite a bit unpleasantly noisier. I must be getting old.
And without a noticeable performance improvement...YMMV

The pair, as new, complete with excellent chrome end pieces, spacers...$60 shipped CONUS
They do look nice, and certainly keep the dirt out.

142 Guy
10-06-2016, 05:03 PM
Belated comments!

The biggest problem with K&N and other oiled element filters is the oil, or perhaps more accurately the people that apply the oil. Specifically, more is not better. More than the optimum amount of oil and you will probably flow less air than a plain dry pleated element filter. The excess filter oil also ends up coating the intake. Probably less of an issue with carbs; but, a problem with throttle bodies on fuel injection with all their various metering ports.

Don't ask me what the optimum amount of oil is.