Mercruiser 4.3 V6 Testlauf Neuaufbau Rebuilt First Run

[@Benzomat74]

Hammer Sound :)

[@KatiePataytieee-BACKUP-]

Sven, what are the Cam specs that you are running in this engine? Sounds like your running greater than 280 Duration, possibly 290's, with 110 LSA. What lift is the Cam and what rocker ratio are you running? Your little motor sounds nasty mean! Good Job! I have the same engine that I just built with a little less Cam (268/278 Duration) and am curious to what your running. Tks!

[@frigglebiscuit7484]

sounds about like a 224-228 @ .050 with maybe a 112 LSA. i dont do advertised duration, as its too easy to skew numbers. @.050 is true and king.

[@richardsteve6044]

I have cracked on my block I need one 4.3 v6 1997 mercruiser... block..

[@granddaddy_ls400]

this is just water? why it is there?

[@AndieBlack13]

The exhaust manifolds for marine applications are water-cooled...the body of water the boat is afloat on is "sucked up" & circulated thru the engine & then finally routed thru the exhaust manifolds & exits the boat towards the rear...

[@granddaddy_ls400]

@@AndieBlack13 thanks for your reply, i read more about these engine, now i understood how the cooling of it works and why water was inside exhaust :D

[@AndieBlack13]

@@granddaddy_ls400 As an important "side effect" of water-cooled exhaust manifolds is one of dissipating heat, note marine engine bays are fully enclosed spaces....these spaces need to be as cool as possible, unlike car applications where there exists some degree of airflow. Recall an internal combustion engine is very inefficient at only some 30% of the liquid fuel energy converted into rotational power, the remaining 70% expressed as heat. Now if someone wanted to "power a residence" with internal combustion, a fuel-powered "generator" would be creating electric power AND thermal energy thru a water cooling system that would be distributing heat for the interior as both a "furnace" and a hot-water system. Typically heat from a car engine or an electric generator is simply wasted.

[@granddaddy_ls400]

@@AndieBlack13 i got it, it's easy to understand now, i wonder that in the future engines will be still powered by any fuel but have less energy wasted, it sounds unreal but who knows... thank u for reply

[@HugoRodriguez-lc1lv]

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