no this sled was never a production model made by sno jet, but heres an interesting wrinkle.Originally posted by ski-doo211
[br]I don't think that snojet ever made that, it looks like someone just put it together. I have done it many times, like i put a 440cc Fuji Free-air(from a 1980 TX) in a 1972 Chaparral firebird. It is probably pretty fast tho.
i might be interested in some of those 643 engine parts if you happen to find some.Originally posted by ramblnman
[br]GOOD SCORE THEM 643 engines got good torque! i had a yamaha gp643 1973 it went gooood! i might still have a engine in pieces kickin around !
the 643 fan cooled was never used in any thunderjets or wisper jets. the 643 free air was used in the 72 and 73 thunderjet. the GP 643 fan motor is not a littited production racing engine. although the 643 free air was.Originally posted by OldCatRider
[br]All my research points to a limited production racing engine that was probably "shoehorned" into that frame. Most likely from a ThunderJet or a WhisperJet.
What about the Sabre Jet 650?Originally posted by AHood
[br]no this sled was never a production model made by sno jet, but heres an interesting wrinkle.Originally posted by ski-doo211
[br]I don't think that snojet ever made that, it looks like someone just put it together. I have done it many times, like i put a 440cc Fuji Free-air(from a 1980 TX) in a 1972 Chaparral firebird. It is probably pretty fast tho.
if you look at this pic youll notice the sno jet decal on the recoil. those decals were only put on yamaha engines that were put in sno jets sleds by sno jet. but sno jet never used the yamaha 643 in a sled so how did it get there. if this engine came out of a yamaha sled and was shoe horned into this sno jet by an individual it should still have the yamaha decal on it. i doubt that this person would have removed the yamaha decal and put on a factory OEM sno jet decal in its place. its possible but where do you get a decal like that. im not saying that is proof of anything i just though it was interesting.