Sno Jet 433

[mrfreyguy]

Just picked this up for my kart. I think its a mid 70's snow jet. I got it from a guy who builds snowmobile engines for $75. Its got crazy compression and a built in fuel pump??? Can someone help me I.D it? says S433 which i think relates of the size of the engine and 1300579 under it. Im hoping to get into my kart before the end of january.

Like the huffy dream girl? 6.95 thrift store score

 

[Kaptain Krunch]

Snow-jet made sleds from 1965-1976, then they sold out to kawasaki who used the sno-jet name until around 1980 i believe. from 65-70 they used only Hirth engines, then they started to use yamaha engines. yours appears to be yamaha (it looks like a yamaha to me at least), so that would put it in the 1970-76 range.

Looks like a pre-mix engine to me, unless theres an injector pump somewhere?

Should make a nice kart engine

 

[mrfreyguy]

Thanks for the info. Your right it's a premix no injection pump. I think I'd rather just mix it anyway for safety I don't really trust oil injection.

 

[Kenny_McCormic]

You will still need a fuel pump, what you have there is called a "diaphragm" or "harmonic" carb, its probably a Mikuni. The pump you see on the carb body is to make the carb work, in any position, that engine will run upside down.

 

[mrfreyguy]

Ok that's good to know. Were would I hook up the fuel pump? The red hose in the pic hooks up to a nipple on the bottom of the carb so that's not a option. I'll take a better look at it tomorrow.

 

[Kenny_McCormic]

That red hose is your vacuum pulse line, it runs the carbs built in pump. You will need to T this line off to run your fuel pump.

 

[freakboy]

1300579
1979???

 

[mrfreyguy]

1300579
1979???

Could be... Ill check into that.

 

[Kaptain Krunch]

Doubt it, that engine looks like a yamaha to me, and in 79' they would have been made by kawasaki.