125 HP fails to rev up

[jimmbo]

For decades, Mercury, on its Inline Engines, had no removable Cylinder Head. Removal of the Water Jacket Cover on one of the older inlines, and you would see this. That changed on the V6s. Your Engine is like the 1st Gen, no Head, but might look a little different with the Jacket Cover off

 

[lgaytan]

For decades, Mercury, on its Inline Engines, had no removable Cylinder Head. Removal of the Water Jacket Cover on one of the older inlines, and you would see this. That changed on the V6s. Your Engine is like the 1st Gen, no Head, but might look a little different with the Jacket Cover off

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Thanks for this pictures this clears my mind a little bit I guess it seems everything is casted together in iron or some material as that, this means this can withstand better over heating? The jacket cover still aluminum I guess.