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  1. Wanted To Buy
    Let me know what you have, two would be nice, one might get me by. Located in Ontario
  2. Freestyle / Legend / Tundra / Expedition Sport
    Hi, I just picked up a pair of 1995 Touring Es with 380s in them. I got one up and running well, it is oiling fine now but I was told I should just abandon the oil pump and take the tank out and run premix. This is the first ski-doo I've had in years and the first one with oil injection. I had...
  3. MXZ / Legend / Summit / Grand Touring / Formula
    I have a mxz 380, and it lacks in speed in fresh powder. The track on it has 0.72 inch lugs. If I were to put a ripsaw with 1.25 inch lugs would that help any and could the engine handle that?
  4. MXZ / Legend / Summit / Grand Touring / Formula
    Whats the best way to removal a fuel pump from a 99 380 touring e? To me it looks like the best way to lift the motor? This seems like a lot of work to remove a simple pump? Thanks Jon
  5. Vintage Ski Doo's
    What Compression, does the Standard 377/380 use? Was there a Low Compression Head, and a High Compression Head, maybe for the Mts? Did they ever make a Fuel Injected 377/380? Was the 377/380(62mm x 61mm) 368.8cc ever called something else? Thanks Rich
  6. Sledding - General Discussion
    There was a 380, and a 380HO made at least in 2004 in Sweden. Any Sweedish people on here know what the difference's are between them, besides HP. I'm guessing the Heads(CR), maybe Pipe. If you can read Sweedish at what RPM"s did they rate the two engines also? Thanks. Rich
  7. Vintage Ski Doo's
    What is the differences between the 380, and 380HO? What HP, at what RPM were they rated at? Does anyone have any Port Maps for them? Thanks Rich
  8. MXZ / Legend / Summit / Grand Touring / Formula
    Hello all Im thinking of adding this style gas tank and seat to my s chassis formula s without electric start. I dont necessarily mean from that model just the same clear gas tank and x racing style seat. Any problems I may run into? Will this combo just mount right up without mods or will I...
  9. MXZ / Legend / Summit / Grand Touring / Formula
    Hello all, I am picking up a 1997 Formula s 380 soon. I have read all about how they are very slow, and blah blah blah, but its an extremely good deal, and I can't pass it up. I had a few questions about the sled. -How is the overall reliability? -Any common problems to watch out for? ALSO It...
  10. MXZ / Legend / Summit / Grand Touring / Formula
    hey guys im just finishing my first re build. i got a free 2001 380 fan cooled touring with rer with a blown motor. i bought a new block off ebay and took everything off the old motor carbs ignition ect. and put it on the new block. the sled runs now but its hard to start and i wanna make sure...
  11. Sledding - General Discussion
    I'm looking for a Dual Plug Ignition for my 90s, 583, 617, 670 engines. Has anyone ever adapted an Arctic Cat Dual Ignition to a Skidoo? Rotax use's a Ducati Dual Ignition on their Ultralight line of engines for the 503UL, 582UL, 618UL. Only the 1993-94 670 can use it. I'm told the rear part of...
  12. Sledding - General Discussion
    Anyone have any CAD files for any stock Heads, Cylinders, Blocks, Cranks, Billet Race Heads, Head Inserts/Domes, for the older 80/90s engines? Mainly interested in the 277, 292, 299, 377, 380, 470, 503, 521, 583, 617, 670, engines. Rich
  13. MXZ / Legend / Summit / Grand Touring / Formula
    Got a 1997 Ski Doo Formula 380F(62mm x 61mm) coming. I want to Big Bore it to a 76mm x 61mm, a 550F(553cc). The 380F, and 550F use the same 120mm Rods, and same 61mm stroke. I'm probably going to go with 76mm LA Sleeves. Has anyone done this before? Does anyone know the Factory HP rating, at...
  14. Sledding - General Discussion
    LOOKING FOR CYLINDER PORT MAPS OF THE OLDER SKIDOO 277, 380, 440, 503, 470, 580. 582. 583, 617, 670. HEIGHT AND WIDTH OF EXHAUST PORT IN mm, AND DEPTH (OUTSIDE OF PORT TO PISTON DISTANCE) in mm. Using this guys programs "Pipe Designer" and "Cone Layout". http://ypvsbox.free.fr/ also this Cone...
  15. General Discussion
    I have the chance to buy a 1996 Ski Doo S 380 with 5180 miles. Seller says it is all good except for the skis are a bit worn, but should last this season for field riding as we do here. I can always do new plastic ones next season. I just wonder how these sleds are for dependability and what...
  16. MXZ / Legend / Summit / Grand Touring / Formula
    Hey fella's, My dad is looking for an exhaust pipe for a formula s 380, I think its a 1996, but I'm sure that any year formula s 380 pipe will work. The one we have is in pretty rough shape, metal is super thin and rusting out. Let me know. Frank
  17. Sledding - General Discussion
    Does anyone know the CCs of the stock skidoo heads? 380 470 583 617 670 670HO Does anyone know of a formula for figuring your compression. Say I have a stock Seadoo Rotax 657(68mm stroke x 78mm bore) with 38cc chambers, what is my compression? Now, if I put on a Billet head with 31cc Inserts...
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