Senior Moment Member
Join Date: Jun 2011
Location: West Vancouver B.C.
Thanked 102 Times in 98 Posts
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Well like the farmer said the first time he saw ballerinas toe dancing: If they wanted taller girls, they should have hired taller girls.
At some point it is easier and cheaper to sling in a diesel than to custom build a a-4 with a custom transmission. I know with Airplanes, which face similar constraints, they end up installing huge 500+ cubic inch motors to get 250 HP, low enough to run a propeller without a gearbox. Besides if the 9.5 inch prop is getting you to hull speed, what is the advantage of the bigger prop? Lou
I had no intent of going anywhere near the extremes you mention. Changing or adding reduction boxes etc. are way beyond the scope of what I had in mind. Obviously spending more on an A4 than changing to a diesel would be foolish.
I was merely curious about what effect the mods I mentioned would have when incorporated into an engine that was ALREADY being rebuilt. For the most part they would only add some work to the rebuild, not a lot of cost (other than the Moyer upgrades mentioned)
As to hull speed, if your engine will attain hull speed against a stiff wind, tide and/or current, then agreed, no benefit. However, around here, there are BIG currents, BIG tidal flows and sometimes, even big wind. I doubt a stock A4 will push a 10K Lb. boat against them anywhere near hull speed.
I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.