by Begle1 » Sun Oct 28, 2007 5:12 pm
I believe that anything after 14 mm required a total redesign of the cylinder; the 14 is a bored out 12, but there isn't enough material to bore it out to 16.
And there isn't enough of a market or advantage in going to that kind of expense.
It'd be more inertia to overcome at high RPM, but I think the extra fuel that it would flow would be more than enough to make up for that.
That's my take on the situation, anyways.
1990 D-250 Regular Cab: Tweaked injection pump, built transmission, a cataclysmic charlie foxtrot of electronics, the most intense street-ran water injection system in the country, and some more unique stuff.