Posted August 09, 2001 - 10:47 AM
It is still in the original state, so maybe someone can give me some tips to easaly gain power.
Posted August 09, 2001 - 10:57 AM
"It's a Yellow 99' YZ400!!"
Posted August 09, 2001 - 11:00 AM
You say it's in the orginal state. So that means stock?? remove the airfilter lid, remove the exhaust baffle and cut the thottle stop to a total lenght of 23 mm. Now start the bike and turn the airscrew out a bit. You may need richer jetting, maybe not if you're high elevation.
Now it should wheelie! Changing to YZ timing and the EKP or EKN needle will really makes the bike bark. A used (cheap) YZ pipe is icing on the cake.
So for a cost of about $50-75 for the pipe and about 2 hours of time, you'll see a LARGE difference in power. I doubt yo'll want much more than this, yet I've found it to be still easy to ride and forgiving.
Email me if you have questions!
Posted August 09, 2001 - 12:25 PM
[This message has been edited by Dan Lorenze (edited 08-09-2001).]
Posted August 09, 2001 - 01:32 PM
Stock my bike wheelied with ease in the first three gears and with the mods listed in my profile, I have to be careful of how much and how quickly I apply throttle. If I'm not, it's a facefull of crossbar and landing on my a$$
99 WR400f, YZ timed, MX-Tech suspension, Scotts steering damper, White Bros E-Series (12 discs), tapered header and a/f. Kouba T-handle for the fuel screw. Works Connection billet throttle tube and frame guards. Cycra Pro-Bend, triple clamp mount handguards. Thumper Racing rad guards, Renthal Jimmy Button highs, YZ Tank and IMS seat, YZ number plate, odo removed, EKP #4, 50PJ, 175MJ at 500-1000' Thanks James Dean!