who's running a two stroke on snow ?

yz notes

my pipe wrap steamed for first part of ride. But pipe wrap slipping on tappered cones, will tig weld some stops, cheap-0- used pipe, no particular goal with the pipe, just had good luck running these on other Kaw and Yam over the years. Used whole can of silicone spray on the 250 pipe, on my WR450 it was tits.
Poured it on the YZ250 but slippery nickle surface of the FMF the paint didn't stick the tape to the pipe like the Titanium coroded surface of my yz450 pipe on my wr.

Top end is mostly low compression gives over rev.
mx bikes make for ENTIRELY different power delivery goals from sno bikes.
mx power opposite of what I would want on sno bike. so will be working to find sum top end.



extra engine under bench, barrel a little rough, so thinking woop azz over bore, intimidated by all the mild 300's.

Awesome! Great work and eval. I have a customers 300 here that is all "moto" and scary on dirt. Ported, high comp, SX moto CDI etc. Parts arriving and will be doing the final testing and tuning for him before delivery. Super fun and capable bikes. Keep it up! I will post test and tune vid on the 300xc thread.

hey just to add, that if you run Maxima Castor 927 stroke oil, be careful, even the company claims its known to seperate at temps below40 degree's
I had a chain saw go up in smokle a few yrs back
and then after doing some reading and asking, I was told that was maybe why
as that is what I ran
all my MX bikes loved it and ran great, but I never ran them in winter
so ??
just a heads up

A couple 300's working well.
http://www.youtube.com/watch?v=nZZDl-t7Ygw

New guy here. Hey Sullcat, that video is of a couple of my riding partners down in Fernie, BC. I've got the same setup on a KTM 300 XC and it's amazing, light and very nimble!

Braaaap

Clint meet Dave.... Dave meet Clint

^^^
Haha small world. Gee I wonder who Braaaap is? lol
Hey Clint I still owe you some beers for helping get my bike sorted.
Cheers,
Dave

No worries Dave, I'm glad your bike is rippin'

found snow

We took our snowikes out to our favorite riding area in the Blackfoot east of Missoula toGold creek. Left the truck with 8" of snow on an old base of a couple frozen inches on road, then started picking up snow and encouraged for this time of year. Before long at 5500 ft or so it was handlebar deep trenching if you were boondocking........tough, got stuck twice, let off or hesitate, down you go.

Snow 99%
Fun factor 100 %
YZ250 66%

thermostat worked
carb heater seemed to work
jetting still not spot on
snorkel air intake only fair choking out
bike would not go through the deep deep stuff in tight trails
open field would fade and fade snorkle plugging.......... down like a sub and stuck

the KTM same kit same track simple FROGSKINZ filter frame cover, air intake worked and it would plow through the deep and pick speed when you found a little room. MY yz250 didn't work as well as my WR450 in this new sticky deep no base stuff. just not enough seemless torque and power delivery to maintain speed. I am certainly not dazzled.

when we dropped back down out of the blizzard and deep and played in couple foot of snow, yz250 ok, feels light and thats good, ski floats and thats good, but the zappy short burst power delivery makes it tough to start cutting the uphill bank and then power on through a sidehill. Hop on the ktm 450, yup just roll on through the chit cutting sidehills effortlessly.

the 1/2 pipe wearbar is for sure a plus. KTM has it, YZ doesn't, riding same trail swapping bikes, no brainer the more packed the trail better the 1/2 pipe works.

work in progress or...........might just pull out the wr450 and wait for spring to ride the YZ250.

dropped to lower sunny area for lunch and snap a few pictures , a few attached.
My pals have pictures of stuck and deep blizzard, I had no humor for picture taking then.

thx for the update , we just run a pod filter strainght off the carb/throttle body and havnt really had any bog issues. might want to try that over your intake contraption. good to hear the new skagg is a big improvment