1956 Johnson 10HP Seahorse

[STEVE IN SOCAL]

Re: 1956 Johnson 10HP Seahorse

I had excellent water flow when it was running, so it's not the impeller. I also ordered new spark plug wires.

 

[wbeaton]

Re: 1956 Johnson 10HP Seahorse

I had excellent water flow when it was running, so it's not the impeller. I also ordered new spark plug wires.

No, but you should still replace it. It is made of rubber and only has a serviceable lifespan of 1-5 years. Cost is about $20. If its fails while running it could plug the water passages inside the powerhead and cause an overheat.

 

[coolguy147]

Re: 1956 Johnson 10HP Seahorse

even though it may be fine. the impeller might lose a leg or two and clog up ur passages then u might be in trouble. u might be able to catch it before it overheats but i mean it might be hard to unclog those passages


impeller will keep u from losing the whole package i find that more valuable then coils

 

[STEVE IN SOCAL]

Re: 1956 Johnson 10HP Seahorse

I ordered 2 impellers, one to replace the existing one now, and one spare.

 

[coolguy147]

Re: 1956 Johnson 10HP Seahorse

u dont need to order two


were just stressing the point that impeller is an important part. coils also well if u wanna get it running but i hope u dont lose it and have to order another one u generally want to replace them every 2 years?

 

[STEVE IN SOCAL]

Re: 1956 Johnson 10HP Seahorse

Waiting on parts still. Did a compression test, though not sure of the validity of the tester. Couldn't get it to work at all at first, then got 75 lbs on each cylinder. Engine was cold, if that matters. Not too worried about PSI, but glad they tested identical.

 

[coolguy147]

Re: 1956 Johnson 10HP Seahorse

thats ok compression for a motor that hasnt been started. once u get it running good do a dacarb im sure it will jump to maybe 90psi

 

[EN2]

Re: 1956 Johnson 10HP Seahorse

Most shops would ask, whats points and condenser?

 

[coolguy147]

Re: 1956 Johnson 10HP Seahorse

Most shops would ask, whats points and condenser?

id say well its the old way of running ur motor. take a history class

and there cheaper!

 

[STEVE IN SOCAL]

Re: 1956 Johnson 10HP Seahorse

Parts arrived today...here we go..!

 

[STEVE IN SOCAL]

Re: 1956 Johnson 10HP Seahorse

Anyone know the torque specs for when I reattach my flywheel?

1956 Johnson 10 HP


THX

 

[R.Johnson]

Re: 1956 Johnson 10HP Seahorse

Compression, ignition, fuel, test for each one. If you don't won't to do that, I'll guess with you all day.

 

[eavega]

Re: 1956 Johnson 10HP Seahorse

Torque Spec for my 1960 10 HP was about 40, IIRC.

-Eric

 

[coolguy147]

Re: 1956 Johnson 10HP Seahorse

45 foot pounds i believe

 

[lindy46]

Re: 1956 Johnson 10HP Seahorse

Anyone know the torque specs for when I reattach my flywheel?

1956 Johnson 10 HP


THX

40-45 ft.lbs.

 

[STEVE IN SOCAL]

Re: 1956 Johnson 10HP Seahorse

Thanks...

 

[freddyray21]

Re: 1956 Johnson 10HP Seahorse

Compression, ignition, fuel, test for each one. If you don't won't to do that, I'll guess with you all day.

he's right a motor needs three things to run. compression, fuel and spark all at the right time. check all three and you will have a good running motor.

 

[STEVE IN SOCAL]

Re: 1956 Johnson 10HP Seahorse

I have new points, condensers, coils, spark plugs and wires, and carb re build kit to install. As well as new impeller and lower end seal kit. If I do it right, it should run...fingers crossed....

 

[eavega]

Re: 1956 Johnson 10HP Seahorse

he's right a motor needs three things to run. compression, fuel and spark all at the right time. check all three and you will have a good running motor.

Actually, with all that you will have a good "starting" motor. To have a good running motor, you need one more thing which is NEVER mentioned; temperature regulation. I learned that lesson the hard way

-Eric

 

[STEVE IN SOCAL]

Re: 1956 Johnson 10HP Seahorse

I thought that's what the impellers are for...maybe I'll run some aspirin though it...