[lisevp]

I have a perkins 4-108 in a heritage west indies 38 that has just been rebuilt. It runs well and almost every part in it is new. It runs hot at 200 f under load. I have heard that this is not uncommon. Does anyone have any experience with this problem. Has anyone been successful in adding a larger heat exchanger to increase the cooling capacity. The engine is driving a borg warner 71 transmision which is also cooled buy the engine.The transmission has also been rebuilt. The engine is driving a 3x9x16 prop which is undersized for this engine. The tranmission is a 2.57:1 gear.

Can antifreeze increase operating temp?

Can a tight cutlass bearing affect operating temperature?

Can fuel injector timing affect operating temperature?

What is the max. reasonable operating temp. for this engine?

Will a newly rebuilt engine tax an old cooling system (the cooler has been boiled and cleaned)?

If the engine temp. levels out is it okay to run it at 200 degrees plus?