Weight of 1980 4-cyl 80hp?

Anyone have any idea what the weight of this motor is? My guess is around 300 pounds, but I'd like to know the actual weight.

I hate to say it, but I'm thinking of repowering and I'm curious as to the weight of this outboard vs. any potential replacement.

I love this motor when it's running, but it's just too unreliable for my needs, providing safety, support and coaching for disabled sailors training to try to win a Paralympic medal. I'm tired of throwing time at it, and good money after bad. Not to mention that $30/day in fuel is tiresome, knowing that a new tech motor will be notably more efficient.

I could spend time and money on replacing the wiring harness and electrics, or spend time trying to get a manufacturer to donate a comparable size motor to the cause... If I succeed at that, the motor will be available for one of you to love and care for!

Re: Weight of 1980 4-cyl 80hp?

251#

Re: Weight of 1980 4-cyl 80hp?

250# Dry Weight.

Re: Weight of 1980 4-cyl 80hp?

I imagine you are looking towards a 4 stroke. Try to obtain the difference in weight and sit it on the motor in the water. A new 90 hp or 75 hp Mercury 4 stroke is 399 dry. Got any friends who weigh 148 lbs? I find that the pretty ones in string bikini's work the best! Have them sit atop of your present motor (not under power for safety).8)

Re: Weight of 1980 4-cyl 80hp?

Bob_VT said:

I imagine you are looking towards a 4 stroke. Try to obtain the difference in weight and sit it on the motor in the water. A new 90 hp or 75 hp Mercury 4 stroke is 399 dry. Got any friends who weigh 148 lbs? I find that the pretty ones in string bikini's work the best! Have them sit atop of your present motor (not under power for safety).8)

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The boat is a 5.4 meter Avon RIB (18'), which weighs about 700#, so a lighter motor is preferable to me... The boat is all about power to weight ratio 8) I agree that 4 strokes are too heavy. I want a new tech, injected 2-stroke. I'm resigned to the fact that any new motor will be heavier, it's just a question of how much. Heck, an 90 hp Opti is 375#. Merc is not competitive by this standard.

90 hp E-TEC is 326#, Tohatsu TLDI is 315#. Those are at the top of my list. I've been in touch with both manufacturers, and I'm optimistic that one of them will come through with a sponsorship for the disabled sailors.

Yamaha seems to be the lightest 4 stroke at 369#, then Honda @384#. The Merc 4-stroke is the heaviest of motor in this class at 399#! But why is the 2-stroke Merc Opti heavier than any 4 stroke??

148# in a string bikini? If I were to have that on the boat, my wife would have me living aboard!

Re: Weight of 1980 4-cyl 80hp?

90 e-tec,way better than the 4 stoke slugs

Re: Weight of 1980 4-cyl 80hp?

The Merc 4-stroke is the heaviest of motor in this class at 399#! But why is the 2-stroke Merc Opti heavier than any 4 stroke??

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Good Question dc...

I have esentially the same engine that you have...and I also wonder exactly where the extra weight is in the new ones. I know that they have oil injector systems and fuel injection and some fancy electronics...but I can't imagine much of the extra weight being in those areas...

Maybe someone here will give us the answer.

Thanks for reading, Chuck

rickdb1boat said:

Re: Weight of 1980 4-cyl 80hp?

250# Dry Weight.

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Thanks! I have a 1975 500 on my 15.5’ the 80 hp may be a bit much for it. More fun but…

A DI 2 cycle motor will be a bit less weight than a 4 cycle motor, but not much. Your current motor will be at least 1/3 less weight than either of those.
Gee, Merc made a 3 cylinder 90HP 2 cycle outboard for a while. They are only avail used, but at least you would move up a couple of decades.