PROPER OIL MIX FOR 20 HP WARD'S SEA KING?

[imported_BOONER]

I just acquired a 20 hp Montgomery Ward's Sea King
outboard and am looking for some info on the year and
oil mix.I am guessing the motor is mid-60's and probably
50:1 but want to be sure, the serial # is 17x20117 and
the model # is vwb27020a, any help with this would be greatly appreciated. thanks

 

[Paul Moir]

Re: PROPER OIL MIX FOR 20 HP WARD'S SEA KING?

Welcome to Iboats, Booner!
VWB27020a is a 1970 Chrysler built 20hp Sea King. Here's the info I've got on it:
Horsepower 20 brake HP at 5000 RPM
Engine two cycle two cylinder, alternate firing
Bore and stroke 2 7/16” x 2.14”
Displacement 19.96 Cu. In.
Carburetor Float feed
Connecting rod Forged Nickel Steel – Uncased needle bearings at crankshaft. Cased needle bearings at piston pin
Crankshaft Forged Nickel Steel. Cased roller upper Main and lower Main bearings. Uncased needle bearings at centre Main and Bronze thrust bearing.
Propeller Aluminum alloy – 8 1/2 Dia. X 8 1/2 pitch, Right hand rotation
Cooling Water cooled – positive displacement type water pump
Transom height 15” or 20”
Weight 74 Lbs. for standard shaft model.
Fuel mixture 48:1 1 pint SAE 30 outboard engine oil to 6 gallons of regular gas – 85 octane
Avoid ‘Premium’ gasolines with 95 octane and antiknock additives
Recommended Operating range – 4500 – 5500 RPM If heavy duty applications then mixture 24:1


Use TC-W3 outboard oil. We have standards now.

 

[imported_BOONER]

Re: PROPER OIL MIX FOR 20 HP WARD'S SEA KING?

Hi Paul, glad to be a member! just wanted to thank you
for your help with this and such a quick response! My
father and i had a feeling it may be chrysler related because we has a 1966 chrysler 50 horse and this motor is very similar to that, the cowl is almost identical
and it is brown and white like a West Bend.
Thanks Again,
take care - BOONER