Posting this for my buddy that can't remember his login to the site haha. Here's his list of upgrades, and then I'll explain the prob;
-2003 yamaha blaster 200cc
-K&N air filter
-V-force 3 reeds
-4* timing advance
-Vito's fat bastard full exhaust
-35mm carburetor
-270 main jet
The RPM band has recently become very limited - the engine won't rev past a certain point - I'd say it maxes out at 75-80% of a normal RPM range. This is both at a standstill and on the move. Also, power has significantly decreased through all throttle, not just at WOT. As the title states, TORS is removed, and has been for quite some time.
New top-end gaskets were just installed this past weekend, new spark plug, carb cleaning, along with an inspection for any other abnormalities regarding the piston, cylinder or head, and everything looked just fine, but unfortunately did not help anything. We've also tried rejetting to sizes in both directions, also yielding no changes.
Everything else is relatively new - the top-end was rebuilt with new piston, done by Kennedy Powersports about a year and a half ago with probably less than 30hrs of actual ride time on it, and there were no unusual occurrences that would have caused this. It's basically a 'last time we rode, everything was fine and today it's not' type of situation.
Any advice on what to check/replace/change is greatly appreciated. I'll provide more info if more is needed lol. Thanks a lot guys.
-Lindso
-2003 yamaha blaster 200cc
-K&N air filter
-V-force 3 reeds
-4* timing advance
-Vito's fat bastard full exhaust
-35mm carburetor
-270 main jet
The RPM band has recently become very limited - the engine won't rev past a certain point - I'd say it maxes out at 75-80% of a normal RPM range. This is both at a standstill and on the move. Also, power has significantly decreased through all throttle, not just at WOT. As the title states, TORS is removed, and has been for quite some time.
New top-end gaskets were just installed this past weekend, new spark plug, carb cleaning, along with an inspection for any other abnormalities regarding the piston, cylinder or head, and everything looked just fine, but unfortunately did not help anything. We've also tried rejetting to sizes in both directions, also yielding no changes.
Everything else is relatively new - the top-end was rebuilt with new piston, done by Kennedy Powersports about a year and a half ago with probably less than 30hrs of actual ride time on it, and there were no unusual occurrences that would have caused this. It's basically a 'last time we rode, everything was fine and today it's not' type of situation.
Any advice on what to check/replace/change is greatly appreciated. I'll provide more info if more is needed lol. Thanks a lot guys.
-Lindso
