Converting Triple engines to twins, whats involved? 42ft fountains

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08-16-2015, 12:30 PM

#11

blown

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holy smokes. I burn 50+ gph cruising at 55 in a 35 footer! Sonics hulls are made of unicorn breath?

Quote:

Originally Posted by jeff32

15 was based on my vacation trip of 36 hours both canal and open water for 3 engines combined
another ride of more open water at cruise speed wich is 3300 rpm for 47 mph it ran 22 gal an hour for 3 engines combined

08-16-2015, 12:45 PM

#12

Wildman_grafix

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Quote:

Originally Posted by jeff32

That is 2 mpg, not bad for any boat. Let alone a 45 footer.

08-16-2015, 05:39 PM

#13

offshore312

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Quote:

Originally Posted by jeff32

Is that figure based on imperial gallons?

08-16-2015, 10:40 PM

#14

hogie roll

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No straight bottom trip 45 gets 2mpg planed off. Check your math.

08-17-2015, 06:33 AM

#15

jeff32

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i will

08-17-2015, 11:06 AM

#16

jimjomack

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How big is the tank in a 42? I thought they usually get around .9mpg or something like that cruising

08-17-2015, 11:17 AM

#17

Unlimited jd

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Quote:

Originally Posted by jeff32

I have my triple since july 15th... Almost 50 hours done! Not that bad on gas between 15 and 22 gallons per hour up to now...dont know what the same boat would burn in twin but i have the feeling it is not more thursty than my 38 twin...

Maybe each engine

08-19-2015, 10:54 AM

#18

eddie

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Quote:

Originally Posted by jimjomack

I have been seeing a bunch of 42ft fountains with triples for what seems like real good prices. I was just curious what is involved with converting triples to twins? Do the two outboard engines stay in the same position? I'm assuming after you removed the middle engine you would have to do some stringer work. Also, remove the third outdrive and exhaust tips, patch up all of the holes, replace the dash and throttles for twin setup. Has anyone else done this themselves?

We are doing one now, triples to twin staggered. It's a ton of work. New stringers, transom, etc. All new motor mounts I can do on and on. In the end it will be worth it. I've taken forever to do it as it was my own personal boat. Had a lot of issues that kept me from working on it. I've sold it and we are finishing it now. All new power, everything has been gone thru, new paint and interior. It's going to be amazing when done.

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