Question:
I want to adjust the servo cables for the intake and exhaust valves so that they open/close at the optimal RPM to make the most power in the high-revs? I want this to be approximately 7000-12,000 rpms. I do not have a power-prgrmmr or such, but do have a K&N filter, FMF silencer,hi-per cltch and 1 tooth smaller front sprocket.
What bike to choose when you start?
Are there any certified-Honda Tech's out there to answer this?
Answers:
there are no cables that open or close your valves they open and close via the camshaft the servo motor in your exhaust is not adjustable period do not mess with your bike you haven't a clue to how it operates
Is the bolt on the right side (tranny side) of the '02 YZ250 crankshaft, left or right hand threads?
From your question it sounds like you are confused about the variable exhaust valve system. The valve in the exhaust system which is controlled by the bikes computor and moved by the servo motor and cables has NOTHING to do with the engine exhaust/intake valves. As far as I know there is no optimum power setting or tuning to it. You simply set it as described in the manual. After removing the lower part of the fairing you can see the lower pulley, there are dots on it. At idle to a certain engine speed the pulley is in one position. As you rev the engine the pulley changes to two other postions through the rev range (I can't remember the RPM shift points). You simply change the cable adjustment to make sure the pulley travels to the correct position when it changes, there is no majic setting. If fact most aftermarket exhaust systems simply do away with the valve which tells you that it is really not all that effective anyway.Is it true cause someone told me that at 16 you can olny get under 250cc sport bike in Illinois?
geo46er explained it perfectly.More Questions & Answers ...
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