Ok so as the title says im thinking of going to a Polaris snow machine engine....looking at xc 700's..or anything 2stroke and twin....I want to do this swap to maintain the cvt and gain big power. I have a seemingly simple question...will the tb trans hold the extra power or is it going to crap out? seems to me like it would. Also has anyone else done something of this nature? any help would be appreciated.

 

see my post on the 700 scrammy project (tossed a 680 triple into a 400 scrambler 4wd). The swap is easy, the tuning on the other hand is a bugger, but when it gets straightened out they're a blast.

couple recomendations:

Get a complete donor sled, even if it means you have to rebuild the motor, all the little pieces that come with the sled are a big plus.

wire the quad exactly like the sled and only splice the minimum to get everything working

go with a twin, the triple in mine is a tad on the heavy side

run the sled clutches

invest in lots of clutch weights and springs, you'll have it apart more times then ou can count.

 

how much can ya find 2cly 2stroke sled motors for?? sure ant none down this way,..but when my 400 2 stroke putts out im crazy nuff to like this topic!! maybe with twin turbos??

 

MAy want to find an air cooled sled or find a 400 Sport or Scrambler to do that already has a cooling system

 

find a liquid cooled sled, then pick up a radiator/fan combo from summit racing or something, their not that bad. You should be able to find something $500-1000. Yuo won't need twin turbos lol, a good 700 is anywhere from 110 to 140hp.