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Powering a deep c 30 Aug 2020 20:52 #107140

MercuryMarc wrote: Two 35 HP seahorses would weigh quite a bit more than one bigger motor. And the second motor I don't think will give you a much faster top end. I think someone told me about 25% more, but do your own research, on that please.
My Mark 78A weighs 188 lbs. That is super light, so your Mark 75 would be just a few pounds lighter. 60ci Vs 66ci.

I think having two motors is very cool looking, but one bigger motor will probably have better performance.

more than likely you would have 2 six gallon tanks back there. 6 gallons for each motor. on a long cruise 6 gallons might not last very long. Usually two tanks work good for one motor.


The two Sea Horses would weight between 270 and 280 pounds.

Not a good choice in my opinion.
.

Just getting used to the lay of this land.
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Powering a deep c 30 Aug 2020 19:16 #107139

Two 35 HP seahorses would weigh quite a bit more than one bigger motor. And the second motor I don't think will give you a much faster top end. I think someone told me about 25% more, but do your own research, on that please.
My Mark 78A weighs 188 lbs. That is super light, so your Mark 75 would be just a few pounds lighter. 60ci Vs 66ci.

I think having two motors is very cool looking, but one bigger motor will probably have better performance.

more than likely you would have 2 six gallon tanks back there. 6 gallons for each motor. on a long cruise 6 gallons might not last very long. Usually two tanks work good for one motor.
Click the link below for information on vintage Mercury restorations

Mercury Restorations

1957 Clipper / 1969 Merc 1000
Lake life is the best life
Jump in a boat and go
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Last edit: by MercuryMarc.

Powering a deep c 30 Aug 2020 14:35 #107137

Flying C...

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Powering a deep c 30 Aug 2020 14:21 #107136

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Gotta love the Super Gator.
1956 Golden Rocket, 1955 Vagabond, 1957 Crestliner Voyager Hardtop, 1958 Crestliner Jetstreak 15, past boats: 54 Vagabond, 55 Vagabond, 57 Vagabond, 50 FC Flyer, 46 FC Runabout, 57 FC Rocket, 57 Jetstreak

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Powering a deep c 30 Aug 2020 12:56 #107134

A Mark 75 would be awesome!

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Powering a deep c 30 Aug 2020 11:51 #107133

I’m restoring a ‘58 Deep C and am considering a 57 or 58 Mercury Mark 75 or twin Superseahorse 35’s. Any thoughts? The hull is rated 60 hp. The stern is 15 1/2 inches high.

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Last edit: by skulldigger48.
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