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Thread: Water sucking 300xs
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04-17-2017, 04:38 PM #1
Water sucking 300xs
Yesterday I did my first test with my hydrostream virage and new engine (300xs). Runs really good but when I look my movies back it looks like it sucks some water trough my air intake. First I did some research and read they make alien cowling to fix this problem. But is this the only way? And how bad is it for the engine ? Where comes the water? Will it go trough the injectors inside the block Is it just trough the compressor our just the electric components? Read something about tps sensor faillure.
Thanks I hope there is a easy way to fix it.
Movie of the first test:
https://youtu.be/yzl7G6UljcEBoat: Hydrostream virage
Engine: Mercury 300 XS DBR 1.3
Props: 32' performance drag4 ,buckshot gen2 4 blade cleaver 34'
Max speed: 113mph
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04-17-2017, 06:00 PM #2Screaming And Flying!
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Boat and engine look great. I didn't see a lot of spray, but did see some mist from the exhaust. Run the boat some and pop the cover and see what amount, and where the water is. You can point the compressor intake forward also for less mist going into it.
83 V-King, 96 Mariner, 200 hp ff block 2.5 w/a 28p choppa
We gotta clean this liberal mess up, VOTE TRUMP TO MAGA!
Rebuild thread:
http://www.screamandfly.com/showthre...-it&highlight=
http://www.screamandfly.com/showthre...cs.&highlight=
Videos
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04-17-2017, 10:46 PM #3
Thanks love this boat the next day a take of my cowl and the foam inside was still wet from forward to aft by the intake. So now I take al the foam out. Thats why I want to know how bad is it to get some mist inside ofcourse it is not good but before I had a 250xs and blown that one so thats why I am afraid for my new one. Don't want to kill my second engine.
Boat: Hydrostream virage
Engine: Mercury 300 XS DBR 1.3
Props: 32' performance drag4 ,buckshot gen2 4 blade cleaver 34'
Max speed: 113mph
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04-18-2017, 09:52 AM #4
Dave bush sells a cover that you mount on the front of your cowl. you cut a hole in front of cowl. then mount cover plate spaced out about 1/4 inch. seal rear opening with spray foam to keep water out. the only down side is you now hear the compressor and reed valve noise. just above idle it makes a lot of noise. sounds great cruising and wide open throttle.
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04-18-2017, 11:56 AM #5
Thanks for your reply is it possible on a stock engine? I read you have to send your ecu because the extra air.
Boat: Hydrostream virage
Engine: Mercury 300 XS DBR 1.3
Props: 32' performance drag4 ,buckshot gen2 4 blade cleaver 34'
Max speed: 113mph
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04-24-2017, 08:21 PM #6
I switched to Nass cowls two sets of engines ago because of the injection issue. I never changed the ecm, and they run great. The 2.5 style pan on the cowl front with a big hole behind it will fix it also.
Kirk
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04-25-2017, 03:57 AM #7
Thanks for your reply that is info I need! I read some cheap way to fix this problem with a hose into the waterdump hole in the aft of the engine, because the water splash on the wingplate. Full speed i got no roostertail at all only the waterdump. If this hose don't help I will think about a Nass Cowl.
Somebody knows how bad this water is for my engine? Can I kill it during testing our only chance of tps faillure?
This is what I want to try first: http://www.performanceboats.com/foru.../110825?page=1Last edited by darkdream; 04-25-2017 at 09:46 AM.
Boat: Hydrostream virage
Engine: Mercury 300 XS DBR 1.3
Props: 32' performance drag4 ,buckshot gen2 4 blade cleaver 34'
Max speed: 113mph
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07-13-2017, 09:20 AM #8
Last edited by darkdream; 07-13-2017 at 09:39 AM.
Boat: Hydrostream virage
Engine: Mercury 300 XS DBR 1.3
Props: 32' performance drag4 ,buckshot gen2 4 blade cleaver 34'
Max speed: 113mph
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