1955 Evinrude fleetwin

[craveman85]

Picked up a 55 Evinrude fleetwin 7518 yesterday for $30. It's been sitting a long time but is complete and in pretty good shape. The PO said it's been sitting at least 15 years in a climate controlled basement. It belonged to his father who broke the pill cord and never touched it again . I'm probably going to convert the pressure fuel system to a pump. Is there a particular one I should be using for the conversion? Also I need the carburetor kit for it. I looked online and the ones I found said they fit a 56 up to maybe late 60s 7.5 . Anyone know the part number for the compete kit on a 55? Also the float? Have my impeller on the way and working on replacing all the ignition at the moment.

 

[Chinewalker]

'56 kit will work fine in the 1955.

Did you not get th e pressure tank with the motor? There is absolutely nothing wrong with the pressure system. Plus, having a different tank for this motor means you won't inadvertently hook up a 50:1 tank to it and ruin the motor.

 

[Crosbyman]

https://forums.iboats.com/forum/eng...tboards/10544813-1959-18hp-johnson-fuel-lines


follow this link

 

[oldboat1]

+1 on running with the pressure tank. Get it tuned and running well, then decide what fuel system you prefer to use. Chinewalker makes a good point -- motor takes a 16:1 mix, and having a dedicated tank is a good idea.

 

[craveman85]

I have a pressure tank but no ends for the fuel lines and don't feel like spending that much for the ends. I've got a mill crate full of all the subflo line ends. I've got a 3 gal and 6 gallon fuel tank I used for my other outboard until I parted it out. All my other outboards are homelite 55 so I don't need to worry about confusing them

 

[oldboat1]

can try the aomci site to see if a better deal can be had, maybe with a tank. (Guess it would be worse to use the Homelite fuel by mistake!)

 

[craveman85]

My homelite tanks all use homelite specific connectors.

 

[oldboat1]

Was thinking of the four cycle fuel. Bearcat 55s, right? Crosley engines, I think.

IMO, the problem with switching fuel systems before getting the motor in running shape invites troubleshooting difficulties. I like the pressure systems, but that aside I think it's easier to convert after you know all the other bugs have been taken care of. No other skin in the game -- Mikuni pumps are popular for conversions.

 

[Crosbyman]

mikuni square ones are odd balls and need to be tye wrapped ... the round ones by Briggs& stratton are easy to mount as per pictures and the best method is pump on the cover plate .

B&S 808656 are marked.... MIKUNI in the back ....go figure :noidea:

 

[craveman85]

What's the typical operating rpm for these. Also what do you guys use for a tachometer for testing them. I'm going to be running it on a 14' sea King semi v. I'm not sure what the boat weighs but I'm 340 without my fishing stuff so I may try to find a 5hp prop for it.

 

[Chinewalker]

Those motors max out around 4500 revs. A 5.5 prop likely won't be enough for it. They're smaller diameter, as well as less pitch.

 

[craveman85]

I found online that the 7.5 prop in 55 was 8x8" pin drive and the 5.5 has an 8x7.25 pin drive. If I can find one cheap I may try it and see if it works. I'm worried I'm going to have too much weight for that 7.5

 

[craveman85]

I got the motor running great but I'm not sure if my float isn't opening or my fuel pump isn't hooked up right. I prime the fuel system and it will run till the bowl is empty. I forgot how much 16:1 smokes.