100hp Banshee Dirtbike VS. 120hp Snowmobile Drag Quad!


I take my 100hp banshee swapped kx250 and my 600cc triple snowmobile Drag Quad to do some grudge racing. With my buddy’s johns tuning expertise i’m able to get them running insanely nice. After the shoot we head on a long journey to take down a youtuber that called us out.

John’s Channel: @StupidFastJohn

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28 Comments

  1. I bet that KX is easily 80lbs lighter, no way is it the same weight lol. And carb sync is a MUST especially on an expensive high strung Cub engine

  2. If John's engine produced less hp without the carbs being synced, they must have been way, way out of synch, enough to keep one of the carbs from opening all the way. Otherwise, carb synchronization doesn't do a thing for a race bike. Been using mercury sticks since 1978 for syncing carbs.

  3. John had a good suggestion for your "lean sounding " issue. Adjusting the length of the stingers makes a difference. One way to dial them in before welding a permanent adjustment is to cut the top and bottom off of soda cans, split the aluminum along the seam (from top to bottom) and wrap the aluminum around the stinger, moving forward and backward, till the length gets the desired results. Use a metal clamp to hold in position while testing. Weld a stinger extension after you find the proper length. add a half inch to the stinger length to make up for the larger inner diameter of the aluminum wrapped around the outside of the stinger, then cut a little off at a time, 'till you get to the sweet spot.

  4. Leanness is solely for emissions and mpg,rich is where the power and torque comes from..So you spend more in fuel costs,yet you gain quicker throttle response,more hp,more torque,faster acceleration and a cooler running engine over a leaned out engine..

  5. I'm wondering why didnt you crisscross the pipes on the banshee bike to have them sit more narrowly? Left side expansion pipe going header into right side cylinder etc? Cheers ๐Ÿ™‚

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