The long awaited SpeedCircuit Heads for the 2.0L Protege are now available! These heads will flow up to 71% more air at certain lifts over a stock head! All SpeedCircuit heads are completely stripped down and rebuilt, including new parts where necessary. There are two stages of heads available.

Stage 1 includes:
-Special five angle valve job
-Bowl work to blend the stock machine cuts into a larger bowl
-Resurface
-Disassemble/clean/reassemble
-Sandblast clean
-Valve lash set
-Resurface
-Pressure test to ensure no leaks


Stage 2 includes all of the above, as well as
-Completely ported and knife-edged intake ports
-Completely ported and knife-edged exhaust ports
-The extra porting and knife edging results in a larger port that is more consistent than the stock port, resulting in smoother power and better airflow.

Photos:
Combustion Chamber
Intake Port
Exhaust Port
Flowbench results (note the grayed areas are beyond what the stock lift is on the FS-DE engine




Listed price does NOT include shipping, but local pickup is free. Order will not be shipped until shipping is paid in full. Please allow 3-5 weeks for delivery.