Re: The Duchess Project: 1940 Super 8 Convertible Sedan

Posted by HH56 On 2017/7/27 15:20:18

A restricted exhaust is hard on exhaust valves and can cause some severe burning and warping. Some have had issues with a sticking or closed heat riser valve and others have reported restrictions in mufflers or a crushed spot in the tubing as contributing factors. There is usually some reported overheating and loss of power accompanying restricted exhaust issues so if your car didn't have either problem maybe not applicable -- but still could be worth a look see.