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    Mercruiser MC-1 versus Alpha-One - input capacity

    I am dealing with older V8 mercruisers (260 and 233 and 188) in 1970-era boats; It seems that one can rebuild yesteryears V8's, and get more torque and horsepower (RPM), than originally spec'd when new. In general, I would most appreciate advise on how the drives handle abundant power. 1...
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    Mercruiser SternDrive MC-1 vs Alpha; Max HP

    The Alpha One stern drive has maximum HP rating of 300, as published by Mercruiser. That said, what is the maximum HP that an MC-1 can handle? Was it ever published? It seems to me that early MC260, vintage 1978 thru 1982, used the MC-1.
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    Mercruiser drive ratio; high horsepower in small boat

    Hypothetically, if I upgraded from a 165HP inline 6, to a 350 V8, would the 1.5 (V8) alpha one drive ratio be adequate, or too high? I ask because this is a high horsepower motor, pushing a lightweight boat. Currently I run 51mph @ 4100rpm (WOT) with laser II 25P, in a 1971 jolly roger (18...
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    Prop Shaft HP for Mercruiser 165 inline 6

    Does anyone know how much shaft output a Mercruiser 165 inline 6 can muster? I see that Merc publishs this data for more modern 5.7 V8s, but can find nothing on the 165. I ask because I am trying to compare apples to apples, with respect to an engine upgrade.
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    Forced Air Heaters, using Engine coolant ...

    Can I plumb inline a round trip heater hose to the bow, and run hot engine coolant to a heat exhanger? Can the engine water pump handle that additional load, say of a 20' round trip loop? Or is this a bad idea? Warm feet would be a welcome addtion, during the winter boating season...
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    Prop upgrade - how to choose

    I would most appreciate any suggestions for a new propellor. I could go used, or new ... old design or new ... just don't want to do it more than once! Mercruiser 165 inline six (3900-4300 recommended WOT rpm), 1.65/1 gear ratio (I think) Stainless steel 3-blade prop: 48 88440A-4 19 - has...
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    Mercruiser 165 - setting proper trim angle underway

    How does one determine optimum trim angle, while underway? At higher speeds for my boat (above 25 mph), as I trim up, the steering becomes light and neutral, and the boat feels lively (all good here). As trim angle is further increased, eventually, an abrupt steering change occurs ... boat...
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