forged and cast are different methods of metal forming. each has its own quirks,strenths and weaknesses.<br />again<br /> what motor are ya putting them in ?<br />and is it for play or competition?
not really<br /> I use the sierra cast or the OMC ones. unless its a crossflow. since the ring locating pin was moved from the bottom of the groove to the top on the OEM crossflow pistons I have seen many pin failures. on the cross flow motors I use the sierra and have had good service and they are reasonable<br /> on that motor I really see no need for forged pistons. with forged pistons there is a chance of "cold" siezure depending on warm up times and if the t-stat works.
We have had excellent service out of the Vortex pistons even in race (high Rpms) applications. If you use forged pistons extra clearance is neccesary to prevent siezure.
