twoduce Posted February 9, 2020 Report Share Posted February 9, 2020 Little bit about the banshee, bought it a couple years ago and had instant problems with it first time out. Found water in the stator, flywheel area. Needless to say stator was shot and flywheel was rusted beyond belief. So payed big $$$ for all new electrical components stator, coil, cdi, wires, new flywheel, and adjustable timing plate. Plus found that the timing was advanced 8°. Put all together, set timing at +4° and ran it until last weekend, when it was really running awesome then late Saturday afternoon noon lost all power and ignition to left cylinder. Thinking fouled plug, pulled plug and it was little wet from fuel but in all clean, so wiped it down, ran wire brush over it, rechecked gap and put back in and fired it up had smoke coming out both pipes but still know power. So pulled head, pistons in all look good from the top but lots of carbon build up, plus the piston size is stamped on to of 65.19. There is a little play from side to side with both pistons, not sure if that's normal or not. Question is any idea what might be my issue might be and any idea what might have been done with this engine??? It has 65.19 pistons, CPI pipes, Cool heads with 22 domes. Haven't tore into it any further yet but plan on pulling jugs tomorrow. Quote Link to comment Share on other sites More sharing options...
Deets Posted February 9, 2020 Report Share Posted February 9, 2020 Check compression Quote Link to comment Share on other sites More sharing options...
OneBADBanshee05 Posted February 9, 2020 Report Share Posted February 9, 2020 Before you removed the head you should of did a compression test. Because loss of compression would lead to loss of power in that cylinder. Quote Link to comment Share on other sites More sharing options...
twoduce Posted February 9, 2020 Author Report Share Posted February 9, 2020 Ya I thought about checking compression after the fact myself. Guess I might as well pull the jugs tomorrow and see what I've got and maybe do a rebuild or possibly a slight up grade. Was looking at possibly going 66mm pistons and with big bore jugs but need to figure out what has been done to it first, for all I know it's got big bore all ready. It had a crazy amount of timing advance at +8° when I got it last year. Quote Link to comment Share on other sites More sharing options...
twoduce Posted February 9, 2020 Author Report Share Posted February 9, 2020 All most forgot, this thing also has some pretty big carbs on it to, there 38s. Quote Link to comment Share on other sites More sharing options...
Deets Posted February 9, 2020 Report Share Posted February 9, 2020 You might want to figure out what your issue is before you just throw new jugs at it. Quote Link to comment Share on other sites More sharing options...
twoduce Posted February 9, 2020 Author Report Share Posted February 9, 2020 Ya I'm going to pull the jugs, check out the pistons and ring, do some measurements to get an idea of what I got, if all checks out good start testing electrical. Quote Link to comment Share on other sites More sharing options...
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