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You mentioned you removed the Water thermostat for increased flow, however in some cases that can cause some overheating as the water flow is too fast at high RPM to be cooled properly by the radiator. I had this problem on my Production type race car I ended up making a restrictor plate to go in place of the Thermostat. About a 13mm hole from memory & this cured my problem.A leakdown & cooling system pressure check with the engine preheated is the first step.
You mentioned you removed the Water thermostat for increased flow, however in some cases that can cause some overheating as the water flow is too fast at high RPM to be cooled properly by the radiator. I had this problem on my Production type race car I ended up making a restrictor plate to go in place of the Thermostat. About a 13mm hole from memory & this cured my problem.
A leakdown & cooling system pressure check with the engine preheated is the first step.
