'51 eveinrude care

[what66]

Hi I would like any advice you guys have on running an older outboard.<br />thanks.

 

[phatmanmike]

Re: '51 eveinrude care

what about it, has it been sitting for 40 years? is that your question? need more info

 

[what66]

Re: '51 eveinrude care

I don't know how long it was siting I bought it form a thirft store but it did not need any carb work to get it to run so I don't think it had been siting long.<br />but the plugs do look old .<br />It had a broken stearing bracket so I thnk thats why the got red of it.<br />I'm just looking for any advice for running old out boards thanks.

 

[Paul Moir]

Re: '51 eveinrude care

Stick with 24:1 ratio.<br />Decarb it if you haven't already. Do a compression check to make sure you don't have a stuck ring. (from carbon)<br />Inspect and change the lower unit oil.<br />Inspect or replace all rubber hoses. Modern gas tends to break them down. NAPA has replacement fuel line.<br />Expect to need a carb kit soon. Again, modern gas causes problems with the original floats. If the needle and seat are original, they're probably pretty worn.<br />Replace the water pump impeller, unless you know for a fact it is under 2 years old. A new one is cheap. NAPA autoparts or Iboats, #18-3006.<br /><br />I've got a '64 35.7CID engine, which yours would be the grandfather of. <br /><br />I'm certain others will have more and better ideas. <br />Good luck!<br /><br />EDIT: Just looked at some history, it looks like you've got the water pump taken care of.

 

[what66]

Re: '51 eveinrude care

thanks I did do a compression test it showed<br />65psi per cylender I also replaced the impeller becuse it was shot when I got the engine.<br />I havent taken the carb apart yet it seems to be<br />running ok I ran it for 30mins in a 55gal drum.<br />I did change the oil in the lower unit.<br />I have not tried this engine on the water yet.<br />thanks for all your help.

 

[Paul Moir]

Re: '51 eveinrude care

Do that decarb. It might even bring those compression numbers up a bit. These big twins seem to get carboned up pretty good, I guess because they lack a thermostat. Peer down a sparkplug hole with a flashlight, and have a look at the piston crown.

 

[what66]

Re: '51 eveinrude care

Thanks do you know where I can get a carb kit?

 

[Paul Moir]

Re: '51 eveinrude care

No prob. You can get a carb kit (PN 439074) from any Johnny/Rude dealer, or here. The aftermarket carb kits (18-zzzz numbers) do not include a float, so you need to get an OEM one.<br /><br />I'm not saying to rebuild the carb if it's working properly now. Just to be aware that it may be a problem in the future, especially with fuels containing alcohol.