73zer

Thanks for all the ideas, I have the round tops on now, and tossed the flat tops, sorry if I confused anyone. I'll check with the mechanic and see if something works.

I swapped out my new su carbs from z therapy for the 73 flat tops. A little confused on the heating hose which comes out of the engine and runs thru the carbs for warming. 1- Is there a sensor placed in this in this line? ( pic shows blue hose from engine to carb metal line). 2-Also , I see engines without the heat shield, do I need to replace? 3- the engine has been overheating in about 15 minutes and the mechanic can't find anything for cause. Thanks, Brian