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Per a question from a Comanche owner: Otto
Otto:
"1) I have original generator installed - no record in log books of it ever being removed/inspected/overhauled. In process of annual and my IA recommended an overhaul/replacement - AM I better off just overhauling existing generator or possibly replacing with an Alternator? Any recommendations on vendors?
2) Exhaust stack on left side of engine needs repair for cracks ( 1 crack in front stack and 1 crack in rear stack near the where manifold bolts into cylinders) found during pressure test. What are recommendations and estimated costs for repair/replacement?"
There are plenty of items to consider when it comes to alternators vs generators:
As a follow up, if my generator ever packed it in all the way I would probably replace it with an alternator. Modern alternators are reliable, and the solid state regulation and protection is also good.