timing

[drxracing]

a guys wats up i need some info i have a 90 cc drx and advance the timing a bit but then bruned a hole in the piston what is a good spot for the timing to be on and how do check it i was running a 110main jet any help would be very helpfull thanks

[wrhracing]

Spark plug condition can represent if timing is to far advanced.
I would recommend studying spark plugs , they can tell you very quickly if the timing is too far advanced.

[drxracing]

I check the plug after 5 mins of ridin and and it was a little on the black side but the next day i took it in the sand and it started makeing this noise like metal to metal hitn together and be for i can tell the boy to trun it off boom!! nice big hole in the center of the piston

[quadscrib]

Funny, I was just explaining that "metal on metal" sound on here recently...I think thats spark knock....( I think)