Quote:
Originally Posted by Brian
Pete, Can you please elaborate as to why, running flattops, allows higher compression ratios? My 255 running flattops sure is a rattly thing.
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It is simple math. A flat circle has less area than a spherical (raised) circle.
To do this you need to either fill a dome head and machine flat or make new heads with no dome.
Another advantage of flat top pistons is the flame front will travel faster over the
shorter flat surface rather than a domed surface.
This is nothing new, The NASCAR guys were doing it in the 50's.