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Well, I am finally into my carbs on my 1983 GS-650-GD.
As far as I can tell everything is stock except for the main jet which is a #150 and the pilot jet which is a #42 instead of a #42.5. The main jet has a capital R followed by a box with a smaller box in the lower left corner of it (What kind of jet is this?). I have done some investigation and this jet, either way you slice it (dynojet, factory, mikuni, ect ect), is WAY too huge for this bike. The factory calls for a #110 stock. I also put new needles and seats in them and reset the float to the factory spec, PER FACTORY SPEC (on the rounded area of the float instead of the flat part). They were adjusted to the flat spots which would have been far too rich.
Here is the set-up: Bone stock engine, Emgo pods, and MAC 4-1 exhaust.
I am thinking of modifying the MAC exhaust by taking the funky overlapped pipe, restrictive baffle insert out of it. Then welding in a straight pipe between the two end caps, drilling holes in the pipe and adding packing like a true muffler. ( I got this tip from a fellow GSer)
Anyway, where would I need to start on my jetting/settings?
If anyone needs anymore information just let me know.
Thanks very much in advance.
As far as I can tell everything is stock except for the main jet which is a #150 and the pilot jet which is a #42 instead of a #42.5. The main jet has a capital R followed by a box with a smaller box in the lower left corner of it (What kind of jet is this?). I have done some investigation and this jet, either way you slice it (dynojet, factory, mikuni, ect ect), is WAY too huge for this bike. The factory calls for a #110 stock. I also put new needles and seats in them and reset the float to the factory spec, PER FACTORY SPEC (on the rounded area of the float instead of the flat part). They were adjusted to the flat spots which would have been far too rich.
Here is the set-up: Bone stock engine, Emgo pods, and MAC 4-1 exhaust.
I am thinking of modifying the MAC exhaust by taking the funky overlapped pipe, restrictive baffle insert out of it. Then welding in a straight pipe between the two end caps, drilling holes in the pipe and adding packing like a true muffler. ( I got this tip from a fellow GSer)
Anyway, where would I need to start on my jetting/settings?
If anyone needs anymore information just let me know.
Thanks very much in advance.
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