I did a crankshaft timing mod. in a few days ago. Advance open by 6, delay close by 2. I then ran the engine just once. Not exactly know how it perform. Found some difference in characteristic. I run rc boat. So pipe is narrow band, engine work at max. power rpm only. I lengthen the pipe by 5mm.
The engine is 199X's REX 350 Super Competition on road engine. Total exhaust duration 175 degree. I believe this value is regarded as buggy timing nowadays.
Hope to hear any idea.
Thanks,
Leo
Last edited by leo_home; 04-21-2014 at 07:27 AM.