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Author Topic:   Engine weight

Binkster posted 05-20-2013 05:04 PM ET (US)
I would like to get the overall weight of my 1961 Evinrude Starflite V4 75hp. I'm thinking it might be a little heavy for my antique runabout. I'm thinking of replacing it with an early '70's Merc. 4 cyl. 800 80 hp, but now I'm thinking they might be about the same weight, and why go to all that trouble.
rich
frontier posted 05-20-2013 11:52 PM ET (US)
In the 1962 Evinrude brochure, it shows:
Starflite 75 V4 Selectric Shift: weight 240#.
Starflite 75 V4 Standard shift: weight 220#.
frontier posted 05-21-2013 12:04 AM ET (US)
Just found the 1961 Evinrude brochure.
Same weights.
Uni-Charger Starflite 75 = 240#.
Starflite 75 = 220#.
This brochure has a great 2-page section featuring a 13' Boston Whaler with a 10 HP Evinrude Sportwin.
Binkster posted 05-21-2013 09:10 AM ET (US)
Thank you frontier.
I am running this outboard with the Unicharger system on my 1959 Sea Fury 14ft. glass runabout at the local Antique outboard (AOMCI) meets. the boat was designed for the light weight Big Twins of the era. The boat was very squirrelly at first and ran in the low 40's. I built a pair of adjustable trim tabs which tamed the boat down, however also slowed it down when turned down. I can tweak the tabs and get 45 mph but with some porpoising. I was told by some "experts" at the club that my problem is the engine is to heavy, and I should try running a 4 cyl Merc 800, 80hp (early 1970's), as the Merc was much lighter than the Evinrude. I found that the Merc 800 is 240lbs., so the weight is the same as the Evinrude. The Merc may have a bit more power, but I'll stick with the Evinrude for now. I think raising the motor one hole up, and getting the prop which is a brass two blade reworked will give a few more mph and lick the porpoising problem. I'm only turning 4200rpm and should be turning at least 4500.
rich
leadsled posted 05-22-2013 07:36 AM ET (US)
If I remember right you have a 15" transom. The Mercury dealer near me had an old 80 Mercury 15" engine that he had for years among his used engines. They might still have it. They are Bills Outboard in Hingham Mass.
The other option would be a late 90's Tohatsu 50 hp short shaft manual start which weighs 159. I just checked and they still sell that motor for the international market along with all the other old style 2 stroke engines. Too bad I can't have a couple of 25's and 8 hp engines shipped here.
Binkster posted 05-22-2013 08:21 PM ET (US)
leadslead
Thanks for the lead. I'll contact Bills Outboard. It would be great to find a shortshaft.
rich
Nevek posted 05-23-2013 09:38 AM ET (US)
One source I have found which is great for finding the weight of an outboard is Nadaguide.com, though they might not have some of the more vintage engines you guys are talking about.

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Author	Topic: Engine weight
Binkster	posted 05-20-2013 05:04 PM ET (US) I would like to get the overall weight of my 1961 Evinrude Starflite V4 75hp. I'm thinking it might be a little heavy for my antique runabout. I'm thinking of replacing it with an early '70's Merc. 4 cyl. 800 80 hp, but now I'm thinking they might be about the same weight, and why go to all that trouble. rich
frontier	posted 05-20-2013 11:52 PM ET (US) In the 1962 Evinrude brochure, it shows: Starflite 75 V4 Selectric Shift: weight 240#. Starflite 75 V4 Standard shift: weight 220#.
frontier	posted 05-21-2013 12:04 AM ET (US) Just found the 1961 Evinrude brochure. Same weights. Uni-Charger Starflite 75 = 240#. Starflite 75 = 220#. This brochure has a great 2-page section featuring a 13' Boston Whaler with a 10 HP Evinrude Sportwin.
Binkster	posted 05-21-2013 09:10 AM ET (US) Thank you frontier. I am running this outboard with the Unicharger system on my 1959 Sea Fury 14ft. glass runabout at the local Antique outboard (AOMCI) meets. the boat was designed for the light weight Big Twins of the era. The boat was very squirrelly at first and ran in the low 40's. I built a pair of adjustable trim tabs which tamed the boat down, however also slowed it down when turned down. I can tweak the tabs and get 45 mph but with some porpoising. I was told by some "experts" at the club that my problem is the engine is to heavy, and I should try running a 4 cyl Merc 800, 80hp (early 1970's), as the Merc was much lighter than the Evinrude. I found that the Merc 800 is 240lbs., so the weight is the same as the Evinrude. The Merc may have a bit more power, but I'll stick with the Evinrude for now. I think raising the motor one hole up, and getting the prop which is a brass two blade reworked will give a few more mph and lick the porpoising problem. I'm only turning 4200rpm and should be turning at least 4500. rich
leadsled	posted 05-22-2013 07:36 AM ET (US) If I remember right you have a 15" transom. The Mercury dealer near me had an old 80 Mercury 15" engine that he had for years among his used engines. They might still have it. They are Bills Outboard in Hingham Mass. The other option would be a late 90's Tohatsu 50 hp short shaft manual start which weighs 159. I just checked and they still sell that motor for the international market along with all the other old style 2 stroke engines. Too bad I can't have a couple of 25's and 8 hp engines shipped here.
Binkster	posted 05-22-2013 08:21 PM ET (US) leadslead Thanks for the lead. I'll contact Bills Outboard. It would be great to find a shortshaft. rich
Nevek	posted 05-23-2013 09:38 AM ET (US) One source I have found which is great for finding the weight of an outboard is Nadaguide.com, though they might not have some of the more vintage engines you guys are talking about.