[ryanhermann]

I bought a 1980 Yamaha SS 440 for $75 that I am going to fix up. I am just curious what is the top speed for this snowmobile in stock configuration?

 

[77Scorpion]

probably around 70mph

 

[kccats]

Maybe in perfect conditions!

 

[ZRTEETH]

70 mph sounds about right. I rode an 83 ss and the speedo said 80 or 85 which is about 70 in reallity. They run pretty good for a single carb fan cooled engine.

 

[Yamaha440]

Maybe in perfect conditions!

Jeez my Exciter 440 will top out at 90MPH in the perfect conditions. 75MPH on powdery stuff.

 

[ZRTEETH]

They only rated the ss 440 at about 50 horsepower. They have a single carb and have small ports, but they run forever. He may get 75 out of it. Im also 220 lbs. --Speedo example--My arctic cat said 115 mph but my gps said 105 mph.

 

[Yamaha440]

I had consistent readings, on a few sleds. Also I weight 150 LBS. and The led weights 350LBS. Same motor though. Also, mine has reeds.

 

[Roof_991]

I bought an 82 440ss 3 weeks ago for $25 turned around the next week and sold it for $225 not running.

 

[ryanhermann]

Thanks for the info

 

[OOSHELL]

my 1980 ss440 ran strong until i ran lean on the clutch side and burned a dime size hole in the piston... time to rebuild... GREAT SLEDS! taking my 1980 exciter and 1980 ss440 to the 30 mile endurance race on march 12, hope to see u all there!

 

[Yamaha440]

Well, look who's in the same boat. I over heated mine. Ran at 80 MPH for 4 MI, then stopped for a road. Then I gunned it again. Didn't have the same power. Melted. Don't know how bad, pulling the head tonight.

 

[ryanhermann]

The yamaha's seem to be known for that we have a 85 excell III that did the same thing burned a hole in the pto piston to. Just got my ss 440 free and rotating but its only runnin about 35 psi on pto piston. So Im gonna rebuild it when I get some cash.

 

[Yamaha440]

Well it's not bad, just some flash. It did have blow-by and similar problems, so it was time for a rebuild anyway.