Dual cooling through hull tube size

[JetSkiKid]

What's up guys I'm in the middle of doing a build on my ski and plan on running dual cooling so I have to add another tube from the engine compartment to the pump; obviously. I've been searching through the forum all day and came up dry. Just simply looking to find what size the tube has to be
Thanks for any info you guys are always a great help!


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[Roseand]

3/8 inch OD

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[Mark1995]

The vacuume pump in the bottom of your engine compartment under the drive shaft has a through hull tube that is 3/8s that is what I used

 

[Vumad]

What's up guys I'm in the middle of doing a build on my ski and plan on running dual cooling so I have to add another tube from the engine compartment to the pump; obviously. I've been searching through the forum all day and came up dry. Just simply looking to find what size the tube has to be
Thanks for any info you guys are always a great help!


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Only necessary if keeping the stock siphon. Otherwise put in an electric bilge, remove the siphon equipment, tap your pump.