Join Date: Jul 2012
Location: Ridgway, Colorado
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Welcome from Colorado.
I suggest we get the original problem fixed before you start removing other parts that affect the way the engine runs.
If it idles fine then dies with throttle, you have a mixture problem, like crap in the bowl or jet. At idle the gas flow is good but increase the gas required and it craps out.
Have you installed a new plug during this thread? What does the plug look like now?
You asked about a top end rebuild, if it is not burning oil (you would have said something if it was) then that is probably not your problem.
If it was me, I would have a small squeeze bottle containing gas in one hand as I use the other hand to and throttle. If it starts to die add a little gas from the bottle to keep it running with the increased air flow from adding throttle.
Fast Green Convertible "06" 660 on 26" BH OG's with Stock Wheels.
COOP45 Primary, 1.5 mm shim, -1.5 mm belt, Purple Secondary Spring,
21 gram weights, weight covers reduced to 29 mm diameter and a 2 mm Cut Cam Plate.
2 heat range hotter plug, Warn Winch, Passenger Foot Rests, Rock Deflectors, Heated Grips and Hand Mitts,
Grab Strap, Cooling System Up-Grade and multiple position mirrors.
8040 miles, 812 hours on 1-1-15