We've been building quality engines since we opened the shop in Fairfield. All of our motors have been running without any issues ranging from 280whp - 500whp. We are in the process of setting up an assembly clean room that should be ready in about a week.

We also have a great new option for the 2.0/2.5 hybrid folks. As most people know, when you run a 2.5l shortblock with 2.0l heads, the compression ratio is too high to safely run on pump gas. The common approach to resolve this is to use a thicker head gasket to try to bring the compression ratio down. While this can bring the overall compression ratio down, it is by no means ideal. The resulting combustion chamber shape remains inefficient since you're leaving the 2.0l chamber in the heads untouched. You are in essence shrinking the quench area and introducing several edges to the combustion chamber that can build up heat and cause knock. This of course makes the engine less efficient than a full EJ257 with heads.

Instead of using a thicker head gasket, we decided to try something a bit different. We worked closely with our machine shop to actually map out the combustion chamber of the 2.5l STI head and create a CNC program to replicate the exact same chamber every time. Using this program, we then set up the 2.0l head castings in the CNC and machine out an exact copy of the 2.5l combustion chamber in each 2.0l head. We are then able to use a quality OEM head gasket and maintain the exact compression ratio of a full STI engine. This greatly improves the quench area and overall efficiency of the engine because you now have the exact same combustion chamber as a full EJ257.

Thanks
-- Ed