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SCX with through hull water pickups

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Old 09-12-2018, 07:37 AM
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Default SCX with through hull water pickups

Any of you folks running a IMCO SCX, but have thru hull pickups? How are you dealing with the water through the SCX case? On my XR I had it blocked off to the gimbal, but a 1/2" hole drilled in the side with a fitting directing the extra water at the side of the case for some additional cooling, Im not going to drill a hole in the side of a brand new SCX, but feel just blocking the flow to the engine will create too much water pressure for the internal water passages in the SCX case.
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Old 09-12-2018, 08:07 AM
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You don’t want to block off the water flow, the scx is internally cooled by this water. I hear you about not wanting to drill a hole in the side.... I’ve talked to some shops that will just run a hose from the gimbal to a dump right out the boat again. I may have to do something like this in the future.
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Old 09-12-2018, 08:51 AM
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Originally Posted by IGetWet View Post
You donít want to block off the water flow, the scx is internally cooled by this water. I hear you about not wanting to drill a hole in the side.... Iíve talked to some shops that will just run a hose from the gimbal to a dump right out the boat again. I may have to do something like this in the future.
i know I wouldnt block it off to the upper, just going into the engine compartment. But like I said, I donít think the internal cooling passages inside the scx where meant for all the water and pressure that the lower picks up. The reason I had to go to through hull was because at 130 mph the pressure was so great, I kept blowing the water hose off the connection at the helmet.
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Old 09-12-2018, 10:40 AM
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Yikes that’s a lot of pressure. Imco might be the only ones that can offer advice at those speeds...
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Old 09-13-2018, 09:49 AM
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I left the hose off the helmet. The water cools my transom. lol
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Old 09-13-2018, 10:52 AM
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Originally Posted by 1 MAIDEN AMERICA View Post
I left the hose off the helmet. The water cools my transom. lol
thats what Fred at imco was saying, seems it needs a little restriction to load the cooling passages, then the other questions, that hard spray of water inside the helmet doesnít bother anything, wash away grease from something? Remove paint?
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Old 09-13-2018, 11:08 AM
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Originally Posted by zx1421 View Post

thats what Fred at imco was saying, seems it needs a little restriction to load the cooling passages, then the other questions, that hard spray of water inside the helmet doesnít bother anything, wash away grease from something? Remove paint?
So just dumping it after the helmet is enough resistance? I like that idea, very simple!
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Old 09-13-2018, 11:33 AM
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Send it up?

SCX with through hull water pickups-yamaha_fx_ho-run.jpg
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Old 09-13-2018, 05:19 PM
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Originally Posted by Sydwayz View Post
Send it up?

Attachment 576003
it crossed my mind, lol
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Old 09-14-2018, 08:44 AM
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let it come thru the transom then reroute back thru the transom with a SS dump fitting that dumps the water back on the drive. I have done that many of times. Its basically a stock drive shower you adapted.
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