Put the engine back together with two head gaskets (from .008 to .016 thick) and started it up and the same thing, pop there goes the prop.
Rechecked the needel setting and it was two turns out and decided to back the regulator screw out (yes I put a new silicone regulator in when I rebuilt it.)


After backing the regulator screw out one and a half turns before being flush with the engine block the motor started and sounded good, it advanced to full throttle and responded to the needle settings. Needless to say I got all excited and put my tack on it to see what it was turning without being broke in and without leaning it out too much. With a zinger 16-6-10 it would turn 7400 RPM but know it will do much better when I have it broken in and leaned it out.
Shut the motor off using the throttle went inside to get my other tack (I never liked my tnc tack)and when I came back the carberator was full of fuel and it was overflowing and running down my test stand. Is it normal for YS's tank presure to force the carb full? I wouldnt think this is normal so now here we go for round two. What is causing this?
Thanks
Roy Seals[img][/img]