04-03-2019, 01:02 AM
the engine is free running but may not be of head milled to extremes, (see it) and lash set crazy wrong too tight. (or both) but mostly can be ignored this worry. "interference"
Some heads in some wild shops get milled 5 times in 30 years (, and valve kiss the piston tops fly cut outs) 1989 heads, seen it.
One friend of mine, his head has crazy high compression ratio now (milled wrong), and no spare heads in his country, and runs custom spark timing to end the PING. (endless if not)
One thing is to expect very bad things on old cars, as others hack away with wild ideas.
This guy has J20 compression on G16a engine. wild.
Some heads in some wild shops get milled 5 times in 30 years (, and valve kiss the piston tops fly cut outs) 1989 heads, seen it.
One friend of mine, his head has crazy high compression ratio now (milled wrong), and no spare heads in his country, and runs custom spark timing to end the PING. (endless if not)
One thing is to expect very bad things on old cars, as others hack away with wild ideas.
This guy has J20 compression on G16a engine. wild.
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