Traprider369

running 20 cc domes, and the torque on the head is good.

Intalled cool head on my shee. Put me right into my seat for bout 3 min round the track, then fell apart. Nice ploom o smoke and decided not to run unless I let it sit for bout 20 min. Then it would run, but not good enough to ride. After stared have to wait another 20 min to start again. Trying to put my finger on the prob. O-rings on head still good. Thinkin a fuel issue. Running premium gas at 32:1 castor 927. Bout 4500 feet in NM. Ran like a champ before the head was installed.