Clutch OEM vs semi race (EXEDY)

pressure plate spring also diff, semi race has 3 spring steel, oem only 2 that would give exedy better clamping force.

i had compared the friction plate between trinity clutch and found that exedy has more thicker and without riveted key.
semi race has 6 double springs while oem only 4 single springs. all these spring used to withstand centrifugal force from flywheel. i belief some of racing after markets do not hv this. the rivet also diff.
after installation it will tighly clamp each other. no free play.

cp pistons finishing fault

ready for fitment


end ring gap also important coz the rate of expansion for aluminum pistons are more higher than cast. and this is to allow relief stress.

take a look very closely to the edge of the valve pocket. its very2 sharp. this may leads to hot spot and detonation. so what i did was failing that area.