Quote:
Originally Posted by 6spdhyperblue
What
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Running super tight quench on most of the modern engine is not only pointless it can also lead to some serious failures. 30-40 years ago when dealing with SBC’s and especially BBC’s you had to deal with it and manage it to make compression because typically a 11.5:1 or 12:1 setup would require a massive dome on the piston so to try and cut back on some of that you ran it tight just to make compression. The bigger the dome the harder it was to get the flame front around the piston and clean burn. Modern engines with way smaller chambers don’t require such a thing and you can run a more normal head gasket, smaller valve reliefs in the piston and less of a risk of damage from either the head and piston hitting or bending a rod from hydro locking on high volume fuels (E85 or meth injected setups).
So unless it just has to be done, running a super thin gasket for “quench” is pointless.