Re: 1934 Eight water pump

Posted by Greenfield On 2022/4/30 17:22:46

Yes, the IR thermometer would test the effectiveness of the water jacket as well. The water jacket has a baffle in it that receives the cool coolant (from the bottom hose of the radiator) and disperses it evenly across the head, front to back. This is done by a series of 5/8" holes drilled in the baffle and directed at each cylinder. Frequently, the baffle is rotted out which permits uneven dispersion of the coolant and therefore unequal cooling across the head. If the baffle were totally rotted, then the front of the head would be cool, and the rear much hotter. The IR temperature from front to rear should be a consistent, perhaps around 125.