So I just finished up my son's blaster today and took it out to go through some heat cycles and had a very bad experience. BTW, here is the build and set up. NEw Wiseco crank and piston, bored to 66.50, DG exhaust system, carb- 290 main and air screw out 1.5 turns. Fuel 32:1, new boyesen reeds. New seals all the way around and air leak tested. K&N filter. Tors and oil injection delete. PUT A CHEAP $40 adjustable STATOR ON IT FROM EBAY (set to 0). I'm guessing that is where a problem may lie.
After going through one heat cycle and cool down, I started it up for another one, I was adjusting the idle at the throttle body screw when it started revving very high as if it were WOT. So I immediately, hit the kill switch and key, but it still kept going, meanwhile I thought it was doomed and it was going to blow. Anyway, I hit the throttle to the Wide open position really quick and it stalled.
However, during the first run I did hear a couple of unusual knocks seem to be coming from the jug. Was this Piston Detonation or is there another problem somewhere?
This is my second build on a blaster. The first one was almost the same, except new FMF exhaust and no cheap stator. No problems with that one. Really, don't want to fire it up again until I hear something. Chris
After going through one heat cycle and cool down, I started it up for another one, I was adjusting the idle at the throttle body screw when it started revving very high as if it were WOT. So I immediately, hit the kill switch and key, but it still kept going, meanwhile I thought it was doomed and it was going to blow. Anyway, I hit the throttle to the Wide open position really quick and it stalled.
However, during the first run I did hear a couple of unusual knocks seem to be coming from the jug. Was this Piston Detonation or is there another problem somewhere?
This is my second build on a blaster. The first one was almost the same, except new FMF exhaust and no cheap stator. No problems with that one. Really, don't want to fire it up again until I hear something. Chris
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