Rookie

iTrader: (4)

My new project has the hull pickups and drive pickups going to the sea strainers.
Both enter at their own port at the top and the bottom goes to the seawater pump.
It appears that both were being used. I've never seen this before. Thoughts?


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Griff

I remember somebody posting about a similar set up. I think they only used the hull pickup for idling in very shallow water.
Never seen a perf boat with a pick up on the bottom like that.

BenPerfected

I use thru the bottom PU's using that same Stainless Marine PU. The concept is to not lose the 1-2 MPH from the drag of a transom mounted PU.

kevinb230

Seems like a good idea, if one is blocked you still get flow. I would be curious what the pressure at speed is with both of them like that

JRider

iTrader: (1)

I like drive pickups in a bravo boat...no scrubbing of speed. Nothing wrong with through hull except possibly leaking into to coring if it is not sealed properly.

BenPerfected

You manage/adjust the water pressure by the depth of the shallow trough you make in front of the thru-hull PU. We ended up filling in the initial 6" trough and still maintain 10 lbs water pressure. We measure the WP at the intake manifold. If you boat in an area with a lot of weed, you can also put a flush SS 2" cover w/holes over the PU. This reduces the amount of weed in the sea strainers to very small pieces.
We dump the water picked up from the drives back 100% on the drive cap. Can't prove it, but my theory is this significant extra cooling is a primary reason our Bravos live with 650-700 lbs torque.

Rookie

iTrader: (4)

That is what I was going to do. Use the drive as a drive shower water pickup. The pickup is flush to the bottom of the boat. I was going to use an adjustable flow valve for the water pressure through the hull.

kevinb230

How do you route the drive water pickup to be a shower?

BenPerfected

Ours is routed with a 90 degree fitting thru the top of a Stellings ext box.

vintage chromoly

iTrader: (3)

Teague and CP performance both sell fittings for the gimble water outlet that can be used to route a 1" hose to a through hull fitting to dump water on the drive.

I set mine up like this.