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post #1 of 13 (permalink) Old 01-12-2011, 03:58 PM Thread Starter
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Top speed for Yamaha SS 440

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?
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post #2 of 13 (permalink) Old 01-12-2011, 04:09 PM
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probably around 70mph

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post #3 of 13 (permalink) Old 01-12-2011, 07:29 PM
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Maybe in perfect conditions!
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post #4 of 13 (permalink) Old 01-12-2011, 07:43 PM
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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.
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post #5 of 13 (permalink) Old 01-12-2011, 08:17 PM
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Maybe in perfect conditions!
Jeez my Exciter 440 will top out at 90MPH in the perfect conditions. 75MPH on powdery stuff.

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post #6 of 13 (permalink) Old 01-12-2011, 09:14 PM
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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.
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post #7 of 13 (permalink) Old 01-12-2011, 09:45 PM
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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.

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post #8 of 13 (permalink) Old 01-12-2011, 10:50 PM
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I bought an 82 440ss 3 weeks ago for $25 turned around the next week and sold it for $225 not running.
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post #9 of 13 (permalink) Old 01-13-2011, 06:28 PM Thread Starter
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Thanks for the info
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post #10 of 13 (permalink) Old 01-21-2011, 01:22 PM
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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!
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post #11 of 13 (permalink) Old 01-21-2011, 02:30 PM
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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.

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post #12 of 13 (permalink) Old 01-21-2011, 05:47 PM Thread Starter
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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.
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post #13 of 13 (permalink) Old 01-23-2011, 06:51 PM
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Well it's not bad, just some flash. It did have blow-by and similar problems, so it was time for a rebuild anyway.

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