I am helping a member of this board get his 77 gs750 with vm26's, 4 individual pods and "header" running correctly. per past recommendations (to others) by Keith Krause and recent suggestions by others (thanks TCK). It has been suggested to start with 125 and 127.5 mains. we installed the 125's but until he gets the needed 2.85 shim and the intake boot o-rings we won't know if the 125's are in the ball park.
I looks like it has emgo pods and some kind of odd ball header, because the No# 2-3-4 cylinders go straight down into the pipe running from the No# 1 cylinder to the muffler. (non equal length pipes).
The stock main jets should have been 102.5's. but I found it with 107.5 mains installed. likely because of the pipe at one time, but no history of what and when the pipe and pod changes were made. I'm thinking that a 122.5's might be a better choice as a starting point for re-jetting.
I can't use the existing color of the plugs to get some kind of idea where it was at, because duct tape was wrapped around the pods to richen it up. (mega, black...)
Yes I know it's hard to guess a starting point, but would you go down a 1/2 step to the 122.5's or stick with the 125's as a starting point?
TIA, Dale
I looks like it has emgo pods and some kind of odd ball header, because the No# 2-3-4 cylinders go straight down into the pipe running from the No# 1 cylinder to the muffler. (non equal length pipes).
The stock main jets should have been 102.5's. but I found it with 107.5 mains installed. likely because of the pipe at one time, but no history of what and when the pipe and pod changes were made. I'm thinking that a 122.5's might be a better choice as a starting point for re-jetting.
I can't use the existing color of the plugs to get some kind of idea where it was at, because duct tape was wrapped around the pods to richen it up. (mega, black...)
Yes I know it's hard to guess a starting point, but would you go down a 1/2 step to the 122.5's or stick with the 125's as a starting point?
TIA, Dale
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