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Discussion Starter #1
was wondering what the horsepower of a '88 ski-doo plus 521 motor that is completeley rebuilt with VM40 carbs. I am going to put it in my mx. thanks.
 

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Wow, I came into this thread quickly with a subject like that!!!

Sorry man, I have no idea. . . .
 

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I wanted to see pic's of the 521HP sled.
Not sure on the HP numbers but I would guess an older 500cc sled to have in the 60-70 Hp range.
 

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Maybe the 521hp sled belongs to the guy with the 10 place $40k trailer and lime green polaris.
 

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lol^ This thread got my attention to..Sorry I dont know the HP..
 

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Discussion Starter #7
lol, sorry guys, i didnt even read the thread like that.

there is an mxz with 300hp i can post pics later.

i know the 462 has 60hp and this is a 521 with fresh pistons, rings. the whole bit. it has to be more than 60-70hp?
 
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