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Yes, I agree. But when the bike is turned on and running after only 30 seconds, no way it should even be in the ball park of 350-400 at the 1st bend of the headers. Range on that running shouldn't be higher than 300 degrees rolling down the street. I am going to do a jet kit and see where that...

So we are trying to bring a '78 XS400 back to life and completely cleaned and rebuilt the carbs, new spark plug and battery. We put on cone pods for filters and after 30 seconds it jumps up to 350-400 degree on the headers. I have a laser temp gauge and I am pretty sure it is not supposed to be...