The Jalopy Journal
Use propane. Old aircraft trick.
You'd have to order custom pistons from diamond, for example. You need a 4.00 bore 390 piston, instead of a 4.050.
The thumper closes up the lsa to 107 degrees, which is a performance, not an economy factor. The exhaust duration is way more than the intake,...
Model T engines had no counterweights. Engine ran fine. Car just had that up and down hop to it. Balancing was instituted in later engines to...
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The Jalopy Journal