Breather venting
Seasoned HDF Member
Joined: Aug 2017
Posts: 7,539
Likes: 12,184
From: Indianapolis
I agree, while that style of air cleaner isn't my cup of tea either, it's totally up to the owner, it's his/her bike.
I consider the oval shaped air cleaner kind of an iconic part of the Sportster and that's why I wanted to stay with it.
I consider the oval shaped air cleaner kind of an iconic part of the Sportster and that's why I wanted to stay with it.
Yes, in the 10-15% range, and in the 5-10% range over a good round or oval set-up.
__________________
DKCustomProducts.com
DKCustomProducts.com
Road Warrior
Joined: Apr 2012
Posts: 1,755
Likes: 253
From: Northern Los Angeles area.
Whoa... I had assumed that a v-stack would perform better than a good round/oval setup.
Very important is HOW the air is organized...how it flows, once it is past the filtering element.
The V-Stack will flow better than many round or oval set-ups, and MUCH better than stock, even better than the stock box with a K&N filter element, but not as well as the 425, 587 or 606...nor as well as some other good aftermarket A/C's.
MOST engines will produce more power with a free flowing air cleaner on them than if there is nothing...just the open throttle body or carb.
The 636v has a particular advantage because of the patented shape of the intake tube which produces a Venturi Effect, increasing the Velocity of the air entering the carb/throttle body.
When we first tested the 636v, ourselves AND the dyno operator thought something must be wrong with the dyno....we did quite a few retests, along with testing other forward facing A/C's.
Below is a comparison of the best runs of each of 4 different forward facing A/C's.
You may also find this REPORT an interesting read.
Thread
Thread Starter
Forum
Replies
Last Post
pugmommie
Sportster Models
7
May 20, 2019 01:14 PM
