7mgte Engine Block Cooling Upgrade
Since the most recent engine meltdown on “Project Red” we had decided to perform some upgrading. Blown Cometic MLS head gasket and signs of slight piston melting led us to believe that even though the car had an upgraded Fluidyne aluminum radiator and the air/fuel ratios were monitored with a PLX Wideband Sensor and kept within safe limits, there were still issues with temperatures in the engine. Examination of the block and the head gasket placement again raised questions such as: “Why are the holes misaligned?” (see picture #1). If there are two open coolant passages in the 7M head, why is there only one corresponding passage open in the block? Well, in an attempt to improve the flow of coolant in the water jackets through the block and the head we decided to create additional openings in the block through to existing water jackets (See picture #2). Since the exhaust side of the block has two openings, why not give it two on the intake side as well? (See picture #3). Will it improve the cooling of the 7MGTE? We certainly hope so. Stay tuned for more info on the Supra “Project Red” engine build…
