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Originally Posted by Hersbird
I don't know the specifics, but read when dodge put out the V10 in 1994 it was because the older 440 big block just couldn't get complete enough burn in the big cylinder holes to meet modern emissions. The v10 shared the same bore as the 360 V8 which had just been modernized in 1992.
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I'd take such claims with a grain of salt. Just look at Ford replacing its 6.8L V10 with the Godzilla 7.3L V8 which BTW also moved back from OHC to OHV.
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So a reliable thumper like a Honda 90 may not scale up as well as you might think.
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Sure making a thumper clean and efficient yet large enough to move a truck (or large car) would be challenging to say the least, but the mention to the Honda Cub engine was just a reference for its appearance.
Honestly something similar to those old-school Japanese horizontal-single Diesel engines which were fitted to Tobatta tractors would be closer to what I had in mind.
A random Chinese copy with a 1.2L displacement and roughly 15 to 20hp around 2200 RPM
There were similar engines up to 1.8L which actually could still perform quite reasonably compared to the Volkswagen 1.6L IDI fitted to the early Rabbit Diesel, yet at a considerable disadvantage when it comes to dead weight.
On a sidenote, some of those engines still feature a built-in 220V power outlet even when they're meant for other applications, so it wouldn't be so out of question to apply a similar concept to an engine meant to a hybrid vehicle. Let's suppose someone tried to convert one from Diesel to gasser...