JPMs 1977 Suzuki GS550 REDUX

[JPM]

The problem is, WOT only bogs down and wouldn't really bring the RPMs up at all so I don't think the full throttle chop is really an accurate one.

 

[japstar]

Is the engine stuttering when trying to climb in revs while riding, or is the engine drowning (more of a bwroap sound).
Stuttering would indicate lean most of the times. Drowning would indicate too rich.

First quick try should be getting the carb leaner when you started with a stock bike. Those are tuned to the lean side for emissions, and when you start changing things you rappidly need to go a big bigger with your jet sizes.

 

[JPM]

Anything above about 1/2 to 3/4 throttle results in the engine completely bogging down and in my opinion, sounds like it's getting too much fuel but the plugs aren't really reflective of that. I think i am going to change the main and retest.

 

[japstar]

Well, if you start getting misfires you can't read shit from your spark plugs
If you're able to post a video with good audio whilest riding, I'm sure some of those dark magic carb tuners will quickly help you out. Best way to learn, from those wizards
Couldn't have gotten my bike adjusted this well without my personal one.
Once you get the basic setup, the fine tuning gets easy.

 

[JPM]

Currently waiting on parts. My least favorite pastime.

 

[JPM]

Still going to tweak the carb tuning a little bit but I'm going to call this one COMPLETE!!!

 

[snmavridis]

BOTM right here.

 

[BENJAMIN]

Great build !! Awesome pictures

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