Cleaned the idle jets and managed to dial in a pretty good idle with good flow balance on all four throats (about 5 on my Synchronometer at idle speed of 900 RPM
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Cleaned the idle jets and managed to dial in a pretty good idle with good flow balance on all four throats (about 5 on my Synchronometer at idle speed of 900 RPM
Concerning the left intake manifold being hotter than the right - the number 3 cylinder is known to run hotter than any of the other cylinders. That MIGHT be the source of the heat.
Concerning the flow - you say the linkage seems aligned. Can you look down the carb intakes at 3000 RPM and verify both throttle plates are open the same amount? Maybe using a "feeler stick" or something. There is a lot of monkey motion in the actuating linkage, perhaps it only LOOKS aligned?
Concerning the flow - you say the linkage seems aligned. Can you look down the carb intakes at 3000 RPM and verify both throttle plates are open the same amount? Maybe using a "feeler stick" or something. There is a lot of monkey motion in the actuating linkage, perhaps it only LOOKS aligned?
My buddy made some adjustments to my IDF 40 and check my plugs.
ran out to the Peterson Museum and got 22 mpg ran Tuff hard on the way home.
Cabanaboy - very happy
ran out to the Peterson Museum and got 22 mpg ran Tuff hard on the way home.
Cabanaboy - very happy
Felix,
I echo what was said by others. To check to make 100% sure at 3000 put a sharpie mark on the linkage on both carbs. Kill the motor and have check down the throats at the sharpie mark for butterfly clearance. The butterflys could be the same but the velocity flow through the carb could be reduced.
It's possible to have a vacume leak on a intake manifold gasket below the carb at either the head or base of the carb. If so some air is comingin through the leak and not through the carb. If that is the case then that bank is lean and would be running warmer because of it.
I have seen it happen. Easy test at idle is to shoot a little carb cleaner at the base of the intake and base of carb. Engine idle change = vacume leak. You would be compensating at idle by a richer mixture setting and you don't know it because the velocity is lower and you can change the idle stop setting.
Just a couple of thoughts.....Dave
I echo what was said by others. To check to make 100% sure at 3000 put a sharpie mark on the linkage on both carbs. Kill the motor and have check down the throats at the sharpie mark for butterfly clearance. The butterflys could be the same but the velocity flow through the carb could be reduced.
It's possible to have a vacume leak on a intake manifold gasket below the carb at either the head or base of the carb. If so some air is comingin through the leak and not through the carb. If that is the case then that bank is lean and would be running warmer because of it.
I have seen it happen. Easy test at idle is to shoot a little carb cleaner at the base of the intake and base of carb. Engine idle change = vacume leak. You would be compensating at idle by a richer mixture setting and you don't know it because the velocity is lower and you can change the idle stop setting.
Just a couple of thoughts.....Dave