Anyone else with bronze valve guide problems?
I’m having my morning cup of coffee here in Grapevine, TX at NAMGAR’s GT-22 and thought I would check my mail. By coincidence, yesterday we had a tech session on machine work on the engine, and the speaker, Bob Webber of SFD Engines in Dallas, told us that he no longer uses bronze valve guides for _exhaust_ valves. Largely because the exhaust valve just gets too hot and causes various problems, such as you describe. Although he still installs bronze valves on the intake side, he says he is also uses iron guides in many engines and is not sure whether the advantage of the bronze guides are worth the potential troubles. YES, YES, YES!!! Exactly the same problem when I restored my TF. In 1994 I installed “Stellite” valves and silicon-bronze guides. Whenever the engine got to operating temp, cruising, BAM, a sticky valve. Let off the gas, push in the clutch, the engine cools 1/100 of a degree, and you’re off again for 30 seconds or so. My solution was the same as yours. I replaced the guid
