Mitsubishi Lancer Evolution Forum banner
1 - 2 of 2 Posts

·
Administrator
Joined
·
24,202 Posts
Discussion Starter · #1 ·
This holiday weekend, save a few bucks on our SpeedCircuit ported and polished heads for the Evo X!

http://www.speedcircuit.net/index.php/speedcircuit-4b11t-head-porting-service.html

The long awaited SpeedCircuit Heads for the 4B11 Evo X are now available! All SpeedCircuit heads are completely stripped down and rebuilt, including new parts where necessary. There are 3 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 (if needed)
-Disassemble/clean/reassemble
-Sandblast clean
-Valve lash set
-Pressure tested 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.

Stage 3 adds deshrouding, but is only available on 88mm bores and larger (stock bore is 86mm).

 
1 - 2 of 2 Posts
Top