clip <<Anybody please help, I have twin 240 hp turbo Perkins (1986, 3,600hrs.). For the last few hundred hours one of them will run too hot at rpms over 1,800-the higher the rpms the hotter it runs. >>> Has the problem just appeared or has it been that way? I had a pair of 225 turbo Sabre's in my Defever that the records had shown the previous owner had it in for service many times for one engine running hot under a heavy load. They soaked him over the years for lots of cash never repairing the problem. I found the problem to be a ding in the thermostat casting that made the thermostat stick and prevent it from opening all the way. I can't believe many "mechanics" of his even after replacing thermostats couldn't figure that one out. (or maybe they did) Two seconds with a die grinder and problem solved. Phil