OK, after having "freed up" the heat riser plate/shaft I noticed it didn't move when I warmed the engine up. I took a heat gun and warmed it up and the loop end of the spring moves away from the pin and the hear riser shaft, of course, does not move. I purchased a new NOS heat riser spring ( GM# 838573) , installed it and again tested with the heat gun. Same problem. I've attached pictures of both the old spring and new spring at 74 degrees F and 120F. Any suggestions? [img]https://www.stovebolt.com/ubbthreads/ubbthreads.php/ubb/download/Number/35676/filename/IMG_1846.jpg[/img]
Last edited by Dusty53; 10/07/20217:30 PM.
Ron - - Dusty53 1954 Chevy 3604 In the Gallery Forum "You can't dance with the Devil and then wonder why you're still in Hell." "They will forget what you've said, and they will forget what you have done but they will never forget the way you made them feel."
