Re: 115hp mercury / 18' starcraft
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Posted by Spike
(188.8.131.52) on August 22, 2005 at 08:18:36:
In Reply to: 115hp mercury / 18' starcraft posted by George Visco on August 21, 2005 at 22:40:47:
I`m not a Merc expert but::
First lets assume the 115 is a sound ready to go motor.If I`m figuring right you are adding about 30% more power.And I`ll bet close to double the cubes.I think low end performance will be a big improvement.I`m betting if you cruise carefully
the 6 will compete pretty well on mileage.Full bore cunsumption might be a little scarey.
Top end might surprise you and no doubt the boat will handle differently at full speed.
Your boat surely will handle the extra weight though you may need to adjust things a little.
You may want to talk to the boys at Johns Old Mercury Web Site.An excellent forum and if you have the serial number and model discription they can give you the lowdown in that motor.
The basic design dates to 57 when Merc introduced a 60 when evinrude had yet to introduce the fat 4 50.