Originally Posted by am
MXwrench:
You also need to take the squishband into consideration. You will get ignition knocking if just lower the combustion chamber to regain the right compression ratio.
You need to change the whole comustion chamberof this is to be done right.
My point was that if the engine was running great then all of a sudden started declining and blowing plugs, then I doubt it is a squish clearance issue. But rather an engine wear issue that is contaminating the plug elements with aliminum particles causing hot spots and thus element failure.
BK