just got a 460 stroker banshee need help!

[arkansas_guy]

I just done some swapping with a guy and aquired a 460 stroker banshee, the guy told me it was just built a few weeks ago, not even a tank of gas thru it. So I get it home and ride it for about 5mins and now I can't get it to idle, if I'm not on the throttle it dies, I checked the plugs and one of them the tip is melted, he told me to run premium gas in it, but I'm hearing from other people I should be running race fuel? Any help from you guys would be very appreciated!

[gotta_goatsfast]

Before you ride it or run it, do a leakdown test. Poor/no idle and melted parts lead me to check a lean condition first... a lean condition caused by an air leak. 460cc is kind of an odd number. Would you mind posting picture of the cylinder or any details about the engine? I only know of a twister monoblock that specs out 460cc. (just so you know what you got). I would also check compression and pull the head off to inspect the piston crown and domes for deto.

[arkansas_guy]

Ok I will do some more checking into it, I will call the shop where he sapposedly had it built, I literally just picked it up today and haven't had time to look in to it, pretty new to the 2 stoke game. But when I got it he said it had a 460 big bore kit with a stroker crank.

[gotta_goatsfast]

When purchasing a new machine, its always good practice to perform these tests anyway. A little poking around to become familiar with the machine and to know what you have (such as inspecting pistons, verify carb jets/settings, ignition timing, ect) A complete tune up will ease your mind that everything is fresh (and also allows you to become more familiar with the machine). Throw up some pictures and post leak down results!

[BigRed350x]

Pull the carbs and clean them and check what jets they have in them & what size the carbs are. Check compression. Do a leak-down test. Post up the results of each and we can help you out better. Since its brand new I would pull the head and at least check the bore and take a look at the pistons and see what shape its really in.

 

-Jared