Old Johnson

[lifewithoutlimits2008]

I am trying to figure out what year motor I have. Its a johnson but the model number plate is missing so All I have to go by is the cap on the powerhead which doesn't have the model number either. Im sure that its an early 60's motor and the number on the cap is J2363069. It is a super seahorse electramatic and I was told it was 75hp. Any help would be appreciated.

 

[lifewithoutlimits2008]

Re: Old Johnson

Here are some pics of the motor if that helps. Just out of curiosity anyone ever seen a similar boat before? All I can tell about it is that its a performer something.

http://http://s641.photobucket.com/albums/uu136/lifewithoutlimits2008/

 

[Chris1956]

Re: Old Johnson

That is a pretty standard looking Johnny V4. Someone on this forum should be able to tell you year, or close to it. You might PM Joe Reeves. He has vast knowledge of those vintage motors.

BTW your pic URL has too many HTTP in it.

 

[F_R]

Re: Old Johnson

I can tell you that serial number 2,341,989 is a 1963, and serial number 2,469,132 is a 1964. That means that your serial number 2,363,069 is either a 1963 or 1964. I do not know what the dividing line was.

 

[lifewithoutlimits2008]

Re: Old Johnson

thanks for the info. sorry about the url. I thought I changed it. If its 63 or 64 I doubt there is much difference and the manual should be about the same. Thanks again.
Trent

 

[tx1961whaler]

Re: Old Johnson

The only difference would be in the fuel/oil mix:

Q - What is the fuel/oil mix for my motor?
A - The following is generally true: 1958 and prior used 20:1, 1959 thru 1963 used 24:1, 1964 and newer use 50:1. High performance usage (racing) requires a ratio of 25:1. New engine break-in (not DI) requires 25:1.

 

[Tim Frank]

Re: Old Johnson

The only difference would be in the fuel/oil mix:

Q - What is the fuel/oil mix for my motor?
A - The following is generally true: 1958 and prior used 20:1, 1959 thru 1963 used 24:1, 1964 and newer use 50:1. High performance usage (racing) requires a ratio of 25:1. New engine break-in (not DI) requires 25:1.

If I don't ask.....someone else will..
Is there an actual difference, practically, between 24:1 and 25:1?
I am probably not accurate enough when i mix gas.

Also I had a 1940s vintage Johnson that called for 16:1 so there might be another date range for your list.

 

[tx1961whaler]

Re: Old Johnson

The list is from Evinrude.com. I think that they now recommend that the real old ones are now 20:1 with modern oils.
There isn't any difference (OK, a teaspoon of oil) between 25:1 and 24:1.
I have a '50's 3 HP, 16:1 engine that has been run at 20:1 for years.

 

[Tim Frank]

Re: Old Johnson

Thanks.

 

[lifewithoutlimits2008]

Re: Old Johnson

Well that helps me out too. I know the fuel mixture is 24:1 so mine must be a 63. So that would make the only logical model number V4S-15 or could it be V4A-14 or V4A-15? Also according to ken cook company there are there are V4SL-15 and V4AL-15. Anyone know the difference between them?