Just wanna share something and hoping someone to share their experience on this. Before my BOT project started in my mind, I was only considering coverting my 4G92P into a DOHC. Went around looking for DOHC head from...
my friend is using RXZ mcycle spark plug Denso
(same heat as NGK plug type 7)
on his vr4 engine since it's quite difficlut
for him to find cold type spark plug (type 6 above)
since turbo engine quite hot...
usually...