1958 35hp seahorse problems

[Lark40]

Re: 1958 35hp seahorse problems

Don't expect too much of these engines when it comes to idling.<br /><br />I have a TinyTach on my mine, which is basically the same as yours, and it doesn't like to run lower than about 850 rpm. <br /><br />The risk of stalling while slowing down to shift is typical of the OMC BigTwin series.

 

[datsjeep]

Re: 1958 35hp seahorse problems

Can anyone tell me if this engine will charge the battery?

 

[Paul Moir]

Re: 1958 35hp seahorse problems

Only if there's a big cylindrical thing to the right of the carburator (a generator).

 

[Lark40]

Re: 1958 35hp seahorse problems

If you don't have a generator, don't worry about it unless you happen to have a lot of accessories.<br /><br />Many owners just charge the battery from a small charger (10 AMP) every three or four times out.<br /><br />The engine runs on magneto spark, just like a lawnmower.

 

[datsjeep]

Re: 1958 35hp seahorse problems

I didnt think it did but thought I would ask. Does anyone know how to hookup a tach with an engine using a magneto?

 

[datsjeep]

Re: 1958 35hp seahorse problems

Alcan I was mistaken. I am NOT using the original preasure system. It has been replaced to match a modern system. I am not sure if it was done correctly or not.

 

[alcan]

Re: 1958 35hp seahorse problems

Hi Dats<br />How is the fuel pump mounted? Is it mounted to the by-pass cover? Is it mounted some where elese and have three hoses attached to it? It must be working some what ok. It's still a good idea to make sure the fuel connector is in good shape. These type connectors are a dime a dozen. As the other guys have noted these models can be a little cranky when it comes to idling. With proper tuning and adjustment you should be able to get acceptable results. I find that by setting the low-speed needle to the richest possible sweet spot. I know, explain that. When dialing in the L.S.needle and you get to the point where the motor starts to sneeze/miss (too lean). Then you richen back until the motor is at its highest rpm (at idle). Most guys will stop here. I say keep richening until the motor begins to slow again (just a little). You want just a nice waft of blue smoke. Lazy smoke,lays low on the water. None of this camp fire stuff.You will have to play with this a bit to get the feel of your motor. Seems each motor has it own personality. Remember every thing else has to be properly adjusted also. Any time you fire up cold at the dock your going to have a little Camp fire action for a miniute or two. When you use the choke the motor draws in a super rich mixture for starting. It takes a while for this to clear. This does not embarass me in the least. There is no finer smell than outboard smoke at low tide early in the morning.

 

[Paul Moir]

Re: 1958 35hp seahorse problems

The stock tach hooks up to the kill wire (from magneto). There's a ~130v spike every revolution of the engine on that line. Tiny Tachs run off a self contained battery, and clip to the outside of the spark plug lead insulation. They pick up the spark by the RFI it generates.

 

[Lark40]

Re: 1958 35hp seahorse problems

Alcan wrote: <br /><br />"There is no finer smell than outboard smoke at low tide early in the morning."<br /><br />What a classic! Smoke 'em up with pride. Not gonna forget that line next time they all stare down at my Lark.

 

[alcan]

Re: 1958 35hp seahorse problems

Lark, You what the problem is don't you? They are all jelious because your fourty some year old motor runs and theirs won't.