say there are 2 similar engines, but one is NA
and the other is turbo charged, i.e. XE and LET
what are the differences in the head, the CR, or maybe that would be piston controlled
i think i remember the LET had bigger valves, but is that because
it is a turbo engine,
or just for more power?
im just using the XE and LET as examples.
overall, could a head from a turbo engine be used on a similar NA engine?