Transparent ICE engine head
A running Briggs engine with the head replaced with a clear block... very neat. Definitely shows why OHV is better than side valve engines.
ALSO SHOWN: wasted spark, intake/exhaust swirl, advance
2004 Honda Civic Hybrid "Eeyore" @ 49 mpg
-MaxIMA, OBDIIC&C, IMAC&C, Lower grill block
RIP 2000 Insight, 40k miles @ 69.2 mpg
2000 Insight, AKA "The Basket Case" or "The Go Pod" @185k miles @ 63.5 mpg
-IMAC&C, OBDIIC&C, Scott's aero panel, grid charger, cheapo sound system