Bonneville America Forums Forums Technical Forums Performance Mods Rejetting Help?

If you have the vacuum balanced wich is to say that while you open the throttle you pull the same on your gage that is attached onto the intake manifold. if not there is a screw that adjusts the linkage.
now if one has a little bit more gasoline in the mixture the combution will be hotter. because the air is air not oxygen. If you pour more gas on a fire it gets hotter.the one that is hotter is richer. and even a very small amount will affect the header pipe right at the head. now I am also talking about to small amount to feal with your hand. However dont idle too long because they will balance out. only idle long enough to feel warmth building in the header pipe and stop while it is still cool enough to keep you hand on it with out burning your self. then because the combution is hotter you will get a small temp difference could be as much as 5 degrees. That is why to use the lazer rather than just your hand because it is difficult to feel that small of a difference.