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1/22/2012
Location
Fallbrook, CA
US
Edited Date/Time
3/26/2013 10:42am
So I traded a guy my 06 CRF450 for the bike below. The bike is so new/clean that it doesn't even have scratches on the bottom of the frame. I have a couple questions for the experts. List of parts for clarification. PC Pipe and silencer, V force reeds 10oz flywheel weight. Everything else in the motor is stock as far as I have been told.
1. Do these need race gas? I ask because my 03 detonated bad
2. How is the stock jetting?
3. Any quirks that need to be addressed?
4. It has TRU suspension mods. Has anyone heard of them?
Thanks in advance
1. Do these need race gas? I ask because my 03 detonated bad
2. How is the stock jetting?
3. Any quirks that need to be addressed?
4. It has TRU suspension mods. Has anyone heard of them?
Thanks in advance
I think you get what I'm trying to say, buddy!
You guys don't even want to hear about the spares that it came with. I should go buy a lottery ticket.
The Shop
I would take that flywheel weight off. The stock engine runs pretty smooth without an arm-jerking hit. The flywheel weight is going to make the engine feel dull if you are riding mx.
Other than that they handle great and are a blast to ride. About the only thing I ever did to my 06 as far as suspension was get the proper spring rates for my weight and then I tuned the bike with race sag and fork heights.
Never sell this bike you just got. If you do, you will regret it, trust me. I sold mine about a year ago and would love to have it back!
From my prior experience here are my answers to your questions:
1.) YES you need atleast a 50/50 blend of race fuel. These bikes were built to run 94-96 octane non ethanol gas. You cannot get that at any pump I know of. Any RM250 I have ever taken apart that runs pump gas usually has major detonation damage on the outer edge of the combustion chamber and on top of the cylinder.
ALSO my experience differs with MXTECH1's recommendation for VP110. Between the C12 and vp110 I would choose the c12 in this application.
2.)Stock jetting is so/so. Definitely need atleast one size larger main jet if you are going to try to run pump gas, which I would advise not to. Jetting where you are could very well be totally different from where I am.
3.)The rear brake pedal springs always seem to go missing on these bikes. If you bend the hook ends of the spring to be closed a bit more, they usually stick around a bit longer.
4.) I don't know anything about "Tru" suspension. I have had excellent luck with Factory Connection and feel they are the best choice for suspension work.
Awesome trade on the bike! That thing really looks clean. Hope you have a blast!
I run 100 pump gas from a local 76 Station and 927 at 32-1. Runs clean, strong and no spooge out the back..
- pc pipe and 304 silencer
-V3 reeds
-will corner inside like crazy, builds confidence
* I got mine for 2K- low hrs. About $500 more, almost a new bike. Revalve, added RMZ front plate and fender, and new rm plastics. Graphics, and OEM top-end and clutch pack.
** Now I use my RMZ for site laps while the track is wet
Pit Row
Stockton & Modesto are the closest to me-- about 8-15 mi away (depends on where I'm riding/racing)
--- since I only need 1-3 gal at a time.
With the fuel tax, the $60 5 gallon pail comes out to just a hair over $70.
* deck the cylinder .030
* set the squish to .045
* run the Weisco racers Choice 808 YZ250 piston in it.
* Run the biggest the flywheel weight you can find & you won't be sorry either. ( I had a 14oz & 16oz ones on my 07 RM250)
* Race gas is a MUST even without cylinder & head work.
* I had very good luck with the stock pipe & a shortened PC silencer. (I had very good luck with the Scalvini pipe too, it revved at lot higher than stock or my PC pipe)
* I have all the jetting specs that worked for me if you need them. I'm in New England & at sea level so mine may not work for you.
05 RM 250
Fresh OEM top end
PC pipe and 304 silencer
V-3 reeds
927 @ 32-1
100 oct pump gas
(I only like to mix 1-2 gals at a time--- as needed)
** Sea level --- Cali (65-75 degrees right now)
*** And what gearing for a little more for jumps out of the corner
anyone in socal wanna hit me up and tell me where to get AV gas in the carlsbad/san diego area without a fight?
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