Home
Basic Dirt Bike How-To's - Video
Dirt Bike How-To's - Video
Living The Moto Life - Video
Bike Tests | Shoot-Outs - Video
Forums
What's new
Latest activity
Log-In
Join
What's new
Menu
Log-In
Join
Navigation
Install the app
Install
More options
Close Menu
Forums
MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Gorr 05 YZ144 project is a success
Reply to thread
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
[QUOTE="147leeman, post: 872568, member: 18627"] Sorry for the delay on the updates, The motor is still more than I expected. I've advanced the timing 1.5mm. Jetting stayed the same as it was a tad rich but now I'm running Ultimate2 oxy. gas and it cleaned up. Eric did make this engine to run on pump gas. FMF Factory Fatty exhaust is used and a shorty silencer. Delta III valve hasn't came in yet, that's my last engine mod. as it's about perfect right now. As for if it will run against the 250f's, I've only been indoors on a tight SX track, so outdoors will be the true test. Here are some findings when I went to make this thing light. Removed rr. brake disc guard - 2 bolts, rr. caliper guard - 2 bolts, cut tabs to the corresponding bolts off, countershaft plastic guard and replaced metal guard with shorter bolts, cut carb. drain tubes to be flush with linkage on stand, removed lower fr. brake line holder steel piece and replaced w/ zip tie (not the piece on the fork guard but the 2nd lower guide), removed tank strap, cut backside of airbox to be flush with the rear fender (causes turbulence of the air entering from the rear so I've read), removed the rubber cover off of throttle assembly. Total of 16 ounces removed. In no particular order: Michelin M12 front tire + Michelin S12 rear tire -41 ounces Cryo Aluminum clutch plates -8 ounces FMF Factory Fatty -2 ounces (all aftermarket others were more weight) FMF shorty silencer - 14 ounces EK MRDL chain -4 ounces Factory Connection alum. shock preload rings -2 ounces RCS titanium shock spring - 10 ounces !!! I heard 2-3 lbs.??? GYTR titanium subframe on ****- 13 ounces 4 Ride Engineering Alum. Banjo Bolts - 2 ounces Renthal ultralight fr. sprocket (the one w/ drilled holes) - 1 ounce Renthal ultralight rr. sprocket 46 tooth (stock was 48 but the motor flew through the stock gearing) - 2 ounces Tusk gas vent valve with shortest connecting tube to the gas cap as possible - 2 ounces over stock length tubing 04 Honda CRF450 Aluminum front brake line clamp assembly (two pieces) + 04 Honda CRF450 Alum. front axle nut - 3 ounces Hammerhead designs alum. shift lever tip - 1 ounce Made my own alum. brake lever tip - 1 ounce Made my own alum. spacer (huge steel spacer is stock) inside of upper chain roller - 1 ounce Lightspeed C/F chain guide - 2 ounces Lightspeed C/F fork guards - 2 ounces Racebolts titanium swingarm bolt - 6 ounces Mettec titanium fr. + rr. axles - 12 ounces Lockhart Phillips alum. bolt kit for misc. plastic bodywork steel bolts - 4 ounces (14 bolts used total) GYTR titanium rear sprocket bolts/nuts - 2 ounces GYTR alum. drain bolt - 2 ounces Total lost off the bike 9.5 lbs. The surprises of no weight loss: Cycralite FFender + 1 ounce (may be less for other models though, color didn't quite match the yamaha blue) MotoMaster front disc was supposedly 40% lighter but with the relocating bracket came out to be + 1 ounce SDG seat was exactly the same weight (this seat is lighter for CRF450's though) Some additional weight lost off of riding gear: Tech 4 boots -8 ounces from Tech6 (- 18 ounces from Tech 8) M2R Rev. X Helmet 2lbs. 13 ounces - 8 ounces from most others like VFXR, Thor SVR, HJC models Thor Phase jersey/pants/gloves - 8 ounces over Thor Core5 combo Under Roost Deflector - 10 ounces over outer chest protector [/QUOTE]
Verification
Which ocean is California closest to?
Post reply
Forums
MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Gorr 05 YZ144 project is a success
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
Accept
Learn more…
Top
Bottom