Aiyaaaaaaaaa........seem lost for sooooooo longggggggg.......got some time for my long forgotten project, seem like never going to end/complete. Anyway got the kick back again, did some mod. this time had my spare head professionally done by "Nasty port & polish" and balance flowed, ported and polished, valve angled, valve throat enlarged. Cost a bit, don't know how good, bench flowed looks great for all 4 - balanced. had my HKS 256 cam in and valve clearance adjusted, balanced all valve clearance to the very best with available shim thickness Toyota ever made. Have to buy special tools to do the valve clearance, see photo. Cost RM75.00 from Mudah.
Photo. 1 Nasty Flow ported & polished head
Photo. 2 HKS 256 cam
Photo. 3 Toyota valve adjustment tools
photo. 4 Exh ported & polished
photo. 5 Inlet ported non polished