Quote:
Originally Posted by jamesqf
Strange, then, that so many older cars seem to be able to run just fine on unleaded gas, and some have been doing so for hundreds of thousands of miles. When's this mysterious sinking valve problem supposed to show up?
|
It happened to my 283, big time. Some of the seats receded so much the valve didn't even reciprocate anymore. At the time I too thought that since I wasn't working that engine real hard, that it would be OK. It wasn't.
To fix the older heads, hardened seats must be installed.