Roudy4x4 Posted November 30, 2008 Report Posted November 30, 2008 I just rebuilt this 89 Banshee I picked up for 500.00 I have only one problem left, it runs great, but I dont know which plug wire goes where. If I flip the plug wires it still runs fine. But I know there has to be a firing order here. Can anyone shed some light on this for me? Thanks Quote
2001Stroker Posted November 30, 2008 Report Posted November 30, 2008 The one closest to the engine goes to the left cylinder. Quote
THE GRIM RIPPER Posted November 30, 2008 Report Posted November 30, 2008 It doesnt matter, Theres no firing order, the coil lights both of them @ the same time every time the pickup sends the signal.... Quote
Roudy4x4 Posted November 30, 2008 Author Report Posted November 30, 2008 The one closest to the engine goes to the left cylinder. Closest to the motor, goes to the left side sitting on the bike right? Quote
2001Stroker Posted November 30, 2008 Report Posted November 30, 2008 Yes, grim is right. It fires on the top and bottom. So, it doesn't matter what wire goes where. It's just easier for the longer one to go to the farthest cylinder. Which is, closest to the motor goes to the left cylinder, when you're sitting on it. Quote
AKheathen Posted November 30, 2008 Report Posted November 30, 2008 firing order = 1+2; 1+2; repeat. Quote
pittss1c Posted November 30, 2008 Report Posted November 30, 2008 OK, I'll be the dumb guy... How does that work? When the piston is at the bottom, the cylinder should be full of fuel/air right? and the spark plug fires there too. Why doesn't the burn start then? Quote
locogato11283 Posted November 30, 2008 Report Posted November 30, 2008 OK, I'll be the dumb guy...How does that work? When the piston is at the bottom, the cylinder should be full of fuel/air right? and the spark plug fires there too. Why doesn't the burn start then? compression Quote
bansheefreak Posted November 30, 2008 Report Posted November 30, 2008 OK, I'll be the dumb guy...How does that work? When the piston is at the bottom, the cylinder should be full of fuel/air right? and the spark plug fires there too. Why doesn't the burn start then? cus its a 2 stroke.. not a thumper... Quote
pittss1c Posted November 30, 2008 Report Posted November 30, 2008 bansheefreak: that makes no sense. locogato11283: I realize there is no compression, but that is not necessary for fuel to burn. Maybe the spark is ineffective to ignite with so much flow going past the plug... Quote
2001Stroker Posted November 30, 2008 Report Posted November 30, 2008 drill a hole in your pistons, and see if it runs. same concept. no compression=no combustion. Quote
THE GRIM RIPPER Posted November 30, 2008 Report Posted November 30, 2008 bansheefreak: that makes no sense.locogato11283: I realize there is no compression, but that is not necessary for fuel to burn. Maybe the spark is ineffective to ignite with so much flow going past the plug... Dude.... Compression is EVERYTHING!!! Where is the spark plug in a diesel? With every PSI the Fuel air mixture becomes more volatile, No way w/o good compression any motor would run. Pour a little of your fuel on the ground and light it up, than try to make sense of the energy that flame is making..... Think that alone will move your Banshee? The mixtue in your cylinder isnt catching on fire.... Its flashing, and litterally exploding, because of the compression Quote
pittss1c Posted November 30, 2008 Report Posted November 30, 2008 Oh, I am not arguing the need for compression to run and produce power. (much less move a banshee) My question was why the spark doesn't start the fuel burning at BDC when the the jug should have completed the intake period. Hold one spark plug outside the cylinder and and see if it doesn't ignite the fuel/air coming out of the spark plug hole without any compression (can't do it with a banshee though). Static or slow moving fuel/air mixture will definitely burn without compression. As for the comment about Diesel, besides the fact that it is a different process all together, compression creates heat. No spark plug needed because diesel is much higher compression. Enough that the heat generated by the compression causes the fuel burn to begin. and fuel burns.. not explode... not in a properly functioning engine. (I believe gas exploding is considered detonation) Quote
stnditup2 Posted November 30, 2008 Report Posted November 30, 2008 Closest to the motor, goes to the left side sitting on the bike right? Just curious where are you located? Quote
THE GRIM RIPPER Posted November 30, 2008 Report Posted November 30, 2008 Oh, I am not arguing the need for compression to run and produce power. (much less move a banshee)My question was why the spark doesn't start the fuel burning at BDC when the the jug should have completed the intake period. Hold one spark plug outside the cylinder and and see if it doesn't ignite the fuel/air coming out of the spark plug hole without any compression (can't do it with a banshee though). Static or slow moving fuel/air mixture will definitely burn without compression. As for the comment about Diesel, besides the fact that it is a different process all together, compression creates heat. No spark plug needed because diesel is much higher compression. Enough that the heat generated by the compression causes the fuel burn to begin. and fuel burns.. not explode... not in a properly functioning engine. (I believe gas exploding is considered detonation) Geuss your right there.... The mixture is burning.... Not exploding like a said, that would infact mean detonation. Either way, the mixture isnt igniting on its way in @ BDC..... Probably because there is basically a vacuum effect in the cylinder at that piont... No? Quote
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