Quote Originally Posted by roar
i'm pretty interested in this

i already have a b16a in my ek4

whats a rough cost associated with converting the bottom end to a b18c (keep in mind i already have the b16 head...duh)

also is it a difficult process/legality issues?
well, a B18C VTiR engine would be around 2000-3000 with manifolds and loom,

then sell your B16A for 800-1000

you need the B18C ECU to ensure you keep the dual runner intake manifold OR convert to a Skunk2 manifold and keep your EK ecu and maybe use a VAFC...

BUT you need to make sure the engine is the same OBD (ie the wiring/ECU and stuff) as your car, then it will be simple plug and play...

legality would include, engine same year or newer than your current car, must keep all emissions equipmnet and change the engine number with RTA

IMO - there is no point in converting a B16A to a B18C bottom end unless the bottom end is dirt cheap or built with forged internals