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Rejetting question

  • Thread starter Thread starter bill761mac
  • Start date Start date
I have to say the camera really makes the plugs look way worse. Its like when you get a hd picture of your face. picks everything up lol.
What are your thoughts?

I don't recall the size of the jets, will find out this weekend.
 
Go figure turns out my main jets are 115. Hmm. I Am not to sure about the credibility of the guy that rejetting for me. Want someting done right just do it yourself. I am going to throw in a set of 125 main jets and go from there.

Now thinking about it. Maybe when I installed the new headers it required the jet size to go back up to 115 which just happened to be factory.
 
Last edited:
matter of fact. I have a set of pods I never installed. You think that would require 3 size increaseof stock 115 with the mac 4 into 1 exhaust?
 
koolaid_kid said:
Your CV carbs should not need rejetting, that is one of their benefits.
Click to expand...

The elevation compensation of these CV carbs is very good, but when different intakes and exhausts are used, all of that goes out the window. They are still better than VM carbs. You can usually ride them through quite a range of elevations without changing jets, but not like the stock system where you can ride from sea level to 14,000' or more without changing anything, and have them run more or less correctly the whole time. I'm sure they could be tuned nearly as well for a 4-1 and pods up high as the stock jetting with air box and exhaust, but it would take a a lot of testing at different elevations and a lot more knowledge than I have. I'm too lazy, I'll stick with an airbox for something to ride up in the hills around here, especially if I want it to work fine down low too. For zipping around a smaller range of elevations, say S.L to 4,000' - 6,000' or so, pods are fine.

Some with altered intakes are a lot better than others. It also depends on tuning and how picky the rider is. Some are content to have it run at different elevations without misfiring, others expect perfection, with great throttle response, at all elevations.

If his bike was tuned for pods and such at 4,000 it could very well be lean at sea level.
 
Depending on which pods and how well that Mac system flows the 125 main jets should be real close. Typically, at/near sea level, they tend to end up in the 122.5-127.5 range. ;)
 
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