Gasket Leak Tip
By George Beaumont
This one comes under the heading of quick tip, and should be done as standard operating proceedure when replacing the exhaust flange gasket. It's very common with the spider DOHC engine to develop a "ticking" sound that mimics a bad valve shim or light engine knock, when it's only an exhaust leak. Follow George's advice and you should only hear those ticking sounds when you really have a loose valve!
Via email from George Beaumont:
If you put the original brown permatex on each side of the exhaust flange gasket when bolting it onto the exhaust header, it will not fail every few years. The permatex turns whitish with the heat through time and will come off again ... G. Beaumont