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What are these for???

Georg

Jet Boat Addict
Messages
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Boat Make
Yamaha
Year
2006
Boat Model
SX
Boat Length
23
Here is a great video on the cooling system of the MR-1.

At the :47 mark the intakes are identified. My understanding is that the pee holes will not always be peeing out water. At idle or no wake speeds the impellers do not create enough pressure to vent thru the pee holes. the cooling loop runs thru the system and branches out in 2 locations (5:15 mark). near the jets and these 2 ports.

Once at speeds the pressure is great enough that the pee holes will vent out the side and report back to you they are working.
Please what's for fitting in 6:40?
 

Georg

Jet Boat Addict
Messages
32
Reaction score
8
Points
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Boat Make
Yamaha
Year
2006
Boat Model
SX
Boat Length
23
Thank you for your explanation.
 
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