MOPED ARMY

You need more then 10° before top center for most engines Try 20° And you could lower it more if it starts running hot

15*BTDC should be a better starting point, the 10 degrees is too advanced.

your info confuses me.. I am at 10- degrees before TDC.. you say that too much and then say go to 15.. which is more??

... too retarded. 15-20 as others have said. double check you are measuring it correctly.

if you are using a DC coil be sure that you don't have a resistor plug or cap, they can be really touchy about that because they don't have as much power as magneto points.

based on your 'it popped once' comment i'm guessing its too retarded. thats usually what they do, then they foul the plug with raw fuel.

you really think you can go from not a pop to running perfect with a 5 degree change.

do you not know how to static timing? you just don't pick a gap, you have to set the gap.

as points burn the gap increases, when the gap increases the ignition timing retards. after about 700 miles you need to tune up because the engine looses power. starts and runs fine. anyway when you go to tune up the car you'll be running good not great and you need to advance it 5 degrees.

buzz box is crazy. how do you have it set so it turns on when the points open? I have no experience with 20's tech. I use 60's coil packs. b108 universal.

Curious about the exhaust header, is it a double tube exhaust? One side looks different than the other.

I use an analog multimeter set on buzzer mode and attach one lead to the points wire and the other to ground. The reduction in sound tells that the points have opened. That's the BTDC firing point.

If you don't know the spec, as mentioned by others, start out real retarded as that was the norm for those days. Is there a manual spark advance on the distributor? It may have had a bar mount control to advance it as the engine reved.

The easiest way in this case to set the timing is to use a wooden coffee stirrer with pencil marks. Put the stirrer in the plug hole and turn to TDC, turning in running rotation. Mark the stirrer at the top of the head with stirrer hitting piston top. You can feel it pretty close by turning back and forth a hair. Make a mark 1/8" above that line. Turn the flywheel backwards- BTDC until the top Mark is at the top of the head. Set your timing adjustment so that when you turn the flywheel to match the second line (BTDC) , the buzzer reduces in sound. Adjust the measurement as needed once it's running. If it doesnt start and rule out ignition, check the carb and see if the plug is wet. Yet some starting fluid that has top end lube in it, available at a marine supply store.

I asked the same. mag or not 40's points will work fine with the b108 universal coil pack. as far as I know buzz box needs a distributor to time the engine. I still would like to know how the op gets the buzz box to fire with the points.

its a 2t. as long as timing is right it runs in either direction.