One Carb Or Two?
Posted 25 October 2019 - 11:30 PM
From The little bit of flowbench testing I did the K+N cone filter offered virtually no restriction to airflow at all. The same can’t be said about the other “filter” I tested alongside it.
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Phil.
Super Mini Mad
Posted 26 October 2019 - 12:02 PM
Great work Phil (as per).
It's always good to see some actual evidence rather than just an opinion.
David Vizard was also a big advocate of K&N filters (and did a lot of testing on them) which is also a huge endorsement as far as I'm concerned.
Moved Into The Garage
Posted 26 October 2019 - 12:52 PM
but the issue is the sound waves not the filtration.
Up Into Fourth
Posted 26 October 2019 - 01:50 PM
but the issue is the sound waves not the filtration.
Up Into Fourth
Posted 17 January 2020 - 03:21 PM
OK picking up on this again.
I am looking for the most efficient Air Filtraton system for the 1310 that I am building.
I have read Kieth Calvers excellent article on Air Filtration where he proves that the standard Air Box with a K&N fitted, with a few additional holes drilled in it, works better that a K&N in a Cone Filter.
However in his summary he states that this was done on a Small Bore unit and suggests that Large Bore Engines (such as my 1310) may benefit from a Pancake Filter.
Kieth said:
"I would also state here that this is not necessarily the case with the large bore engine units. I have had reports of gains of up to 6bhp when using a pancake (not cone) type K&N over the standard filter case set-up from a reliable source. Unfortunately I do not know if that is the standard filter case with standard filter, or with K&N element and other suitable mods. That'll be another test then…"
To that end is anyone aware of any reliable testing on a 1275 - 1310 using a standard Air Box, Modified Air Box with K&N, Cone + K&N and Pancake + K&N.
We could do with a sticky on this in the FAQ.
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