why temp difference left and right , exhaust ?
great running 69' . starts right up , and runs like it should , or , so it seems .. there is quite a difference
in exhaust temp .. left and right ... with the right side , much hotter .... i put a 72' dual port in it , out of a
junker .. could this be valve adjustment issues ? my first bug , $ 300 , in the weeds , and $400
later it is about to hit the road again ..
Sounds like a carb adjustment is needed...One side running leaner than the other...
The engine appears to be a dual port. I have had that problem on a couple of engines and it turned out to be sucking air around the head to intake runner. Spray carb cleaner around the gasket with the engine running and see if it makes a difference. If it smooths out change the intake gasket. Hope this helps
The pre- 1971 type 1 engines had the oil cooler in the cooling air path of the left cylinders. Because of this, the ignition timing on the number three cylinder is retarded 3 degrees. This makes the cylinder head run slightly cooler than the right side head. If you have an EGT probe on each side of the engine, the temperatures will be different unless the probes are mounted exactly in the same place on the number [1 and 4] or [2 and 3] cylinders. That is nearly impossible to do with a stock exhaust system unless the probes are within just a couple of inches of the head. Dual port engines had the oil cooler relocated forward of the cooling fan shroud in their own "doghouse." Dual port heads on a pre- 1971 case will need some different sheet metal, too, so your engine might be a mixture of both types...
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