So I am looking at the service manual for the 2003 WR450F ive been doodling around on.
The oil is supposed to be changed every 1000 km or 620 miles.
Does anybody actually do this?
Granted, I discovered today that it is very low, so perhaps it makes not so much difference if I dump out the rest. What there is looks really nice and clean though. still quite light in color.
If it makes any difference to opinions on interval, I'm running Castrol full synthetic Power RS Racing 4T 10w50
also shocking is the prescribed interval for Inspecting and/or replacing the Piston Rings, also every 620 miles or 5th race?!
and the list goes on.
perhaps I ought to follow the instructions and tighten the rotor nut every 620 miles? or perhaps I should check it once, put some loctite on it and forget about it?
I absolutely love this bike, but if these service intervals are Dead Serious, im afraid I could have picked the wrong machine to put the street legal kit on and haul a$$ back and forth to work and such.
I read somewhere somebody saying the cylinder would need to be replaced after appx 4000 miles at highway speeds. is this statement in order? Is that assessment based on TIP TOP racing performance criteria or is it going to be shot to death at that point? One of the guys at work who races a little says they typically do a top end every 100 hours? This just sounds ridiculous. are they all crazy or are dirtbikes simply built with everything except longevity in mind?
Also, I guess i may want to check the valve clearances? how often do you guys do that?
Is it like a REALLY BAD thing if it pops a little as i downshift and around mid throttle in low gears? or is this "Just What They DO" and its obvious because I got a noisy pipe right under my butt. I suspect this is really just what they do. I've noticed SIGNIFICANT popping even from a brand new Mustang GT, so I'm not so concerned.
Hell, worst case scenario I replace a head and a jug. Apparently Im supposed to do that about every time i change my underwear anyway, so i guess im not doing too bad.
further, do i need to reconsider my habit of cruising at 80 and cranking it up on occasion- ive found it tops out around 105. Im probably doing awful things to it up there. Not to mention the crappy front tire is only rated for 75. Any guesses what the speed limit of the tire is based off of? when they figure it's going to rip to bits and blow off the bike? oddly, the same Shinko 244 rear tire is rated to 93. I wonder why the front is not the same. Nothing has exhibited any signs of adverse behavior to date
I have put about 850 miles on this thing since I got it this spring, mostly road. Some Fun Stuff.
It had about 720 when I got it. For its age, it seemed like pretty low miles. Granted, thats by Highway Vehicle standards.
Any guesses what a long interval for total engine rebuild is?
k. Im gonna quit rambling about.
Edited by yamhammer, June 24, 2016 - 11:24 PM.