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Only $10 for all 2024 SX, MX, and SMX series (regularly $30).
1) my removal of the stock screen (this is more work than you would think)
2) dirty filter (note how dirty the intake horns are - it was a wet/sloppy day!)
3) backside of the dirty filter (showing no dirt ingestion or dry spots from beating against the screen that isn't there)
4) the inner cage after filter removal (showing no dirt paths from outside to inside under filter, and yes there is no grease on the outer lips of the filter/cage)
5) best closeup I could get of the intake boot with jacked up focusing of an iPhone camera
Couple things:
> I run the '18 YZ450F filter. It's slightly larger than the '19 250 filter as well as having the MXA article inner grommet- less chance of unsealing around the edge and better center rigidity.
> I also have not had a "caked" filter yet. Which will increase the low-pressure (vacuum) on the inside of the filter which will "tug" or pull the filter inward toward the intake boot more aggressively than a clean filter or partially dirty filter (shown). How this impacts edge seal is unknown to me as of this post.
> I don't run in beach sand or anything close to it. That probably reads more to the relationship of particle surface area/vacuum area versus the stickiness of filter oil your using than edge sealing anyway - but throwing it out there as a known variable that hasn't been tested.
FWIW, I like this so far but I'm still keeping my eye on it too...
Also, do you really have to remove the backfire screen after a twin air with the spacer is installed? does it still smack it?
I didn't want the backfire screen as I wanted to optimize the airbox to maximize top-end power. After removing the screen, I like the idea of the larger 450 filter just in case the filter gets pulled into the areas where the screen has been removed (the screen isn't there to support). I haven't seen this happen yet, but the extra security knowing the filter has less chance of slipping past the outer cage is nice to have.
Hope this helps.
The Shop
is the -19 450 filter the same size as the -18 450?
I discovered a couple things I feel like are worth sharing.
1) The starter boot/wrap has melted, the wire is fine.
2) The wiring harness has 2 small splice junctions and 2 what I believe to be diodes. Both of the diodes displayed corrosion, kind of surprising considering the low hours and we don’t use any wash chemicals.
All the connections were cleaned, dielectric greased and fully wrapped with vinyl electrical tape to prevent water intrusion. Attached picture was prior to taking the splice and diode apart.
someone i worked with who ride trials said when i asked if it would be good to electric spray every connection and then isolate tape it, if that would be good to keep corrosion away. he´s idea around it all is that water/moisture ALWAYs finds its way in there, no matter what and if you seal it pretty good it might make it stay inside the connections instead.
He usualy just unplug the connections once a week and respray them, might be more worth it i dont know. i will probably seal them with tape anyway...
And that starter wiring did not look to good! is it because of the exhaust i guess?
A couple observations, the manual blows. The cable routing diagrams are terrible, finding the torque values is painful and there are errors.
1) the head bolts are now torque to yield, step one is shown as 30Nm and step two is 11Nm then 60° and 60° more. Steps 1&2 are reversed.
2) One of the outer head bolts is longer than the other 3.
3) They missed the conversion to inches on the clutch thickness specs.
4) The nut on the clutch basket is now staked in position. Better have a new nut on hand, or possibly just loctite it after you grind off the divot.
That’s all I have for now.
KC
How many hours do you guys have on the bikes?
KC
Pit Row
What series are you going to race? Saw the location
Going to race some in the VGC, will see if i end up racing something with the club as well
Wrong part of the country! Östra Mx(lagserien), Stockholmscrossen, Mx outlet cup had an awesome schedule last year so hoping I can race them. Maybe Swecup and JSM if everything clicks
That has never ever happened in my 20 years of riding MX.
KC
Front wheels from four strokes 2014 and up fit
Is there anything not obvious I should know before getting into the Tuner App? I just plan on having the stock and TP map on the handlebar toggle.
KC
http://www.pcracingusa.com/Flo-Shroud-Air-Filter-YZ-450F-YZ250F_p_98.ht…
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