Originally posted by white_n_slow
you need to replace the B20 pistons for pistons with bigger valve reliefs. B16 valves have been known to hit the B20 pistons, VERY BAD. If you're gonna be asking 8200rpm from the B20 bottom end, you might want new rods too.
what pistons would you recomend? Im looking into this swap as well... would teg type r pistons be good or what pistons?