bunkergroup
Registered:1407517398 Posts: 265
Posted 1534817101
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#1
75' Running on a cat. They cop a fair bit of ingestion especially when its rough. Is the danger of this that when not being used the combustion chambers/crank can corrode ? .. Apart from redesigning my pods and getting xxl legs, so as to raise the motors. There is little I can do.
bunkergroup
Registered:1407517398 Posts: 265
Posted 1534817605
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#2
I run xd100 on tc-w3 setting . Would fogging after each use be any help if the motors are sitting for more than 4 weeks
rickmcd53
Registered:1427825469 Posts: 1,335
Posted 1534847950
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#3
I think running the winterization procedure would help to give the internals extra oil while sitting up. If your last 10 minutes of running is at slow speed ( no wake zone) there should be no water spray ingestion so the crankcase should have clean oil in it by the time you shut it off.
bunkergroup
Registered:1407517398 Posts: 265
Posted 1534853040
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#4
Thanks Rick. Yes I have a good 15 mins of "no wake zone" Gladstone marina Qld. I also sit with the motors still running after dropping my deck hand (son) or deck boss as he likes to call himself.𤣠off at the ramp so he can go retrieve the car and trailer..
bunkergroup
Registered:1407517398 Posts: 265
Posted 1534853157
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#5
Thanks Rick. Yes I have a good 15 mins of "no wake zone" Gladstone marina Qld. I also sit with the motors still running after dropping my deck hand (son) or deck boss as he likes to call himself.𤣠off at the ramp so he can go retrieve the car and trailer..
KevNZ
Registered:1518573422 Posts: 9
Posted 1534895271
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#6
Does the ring gear on the flywheel look rusty? You should consider putting snorkel's on the motor covers & duct dry air from inside the boat. The engine is consuming 6500 litres of air per minute at 5000RPM Think of it as 10 times the fuel burn is water going through your engine. NOT GOOD
__________________ kev
bunkergroup
Registered:1407517398 Posts: 265
Posted 1534902190
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#7
Yes there is. I have seen some snorkeling on several cat hulls. Certainly within my capabilities of doing. Anybody out there undertaken the job or have them on their boat ??
bunkergroup
Registered:1407517398 Posts: 265
Posted 1534902478
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#8
KevNZ . I see in your profile a hobbie/possession/addiction š is boat racing. Do you have snorkel setups on those high output , high performance motors?
GEB
Registered:1375525299 Posts: 1,893
Posted 1534929934
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#9
Hi, Re snorkels for outboards. Got me interested as I know nothing about them and unless Iām looking in the wrong places this is all I could find.https://www.marineengine.com/parts/mercury-marine-accessory-parts/exhaust-cooling-systems-and-extension-kits/1994-up/snorkel-kit-350-verado Cheers GEB
__________________ Current. Stacer 389 Territory Strike. Model No.E25DTSLAFC Serial No. 5503333 Sold. Stacer 399 Proline Angler Model No. E30DPSLAAB Serial No. 5375959 New South Wales Australia The learner will not shear the rams.
steelhead
Registered:1368180707 Posts: 2,956
Posted 1534932846
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#10
Where is most of the salt water spray hitting your upper motor at? front, top, sides or back? Coming off CAT center opening?
bunkergroup
Registered:1407517398 Posts: 265
bunkergroup
Registered:1407517398 Posts: 265
Posted 1534945745
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#12
Same rig as mine albeit a 6,2 model . I have a 5.2 running 75's
Mlee76
Registered:1533334652 Posts: 13
Posted 1534970924
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#13
Hi bunkergroup. I have a jackaroo 5.5 angler cat running twin 90's. I put the post up about the rust on the oil pump bodies. What year model are your motors. Have you noticed the same. Have you taken the bottom covers off and looked at the front of the motors. There is an oil line fitting and two engine mount nuts that go a bit rusty as well. I will be doing as suggested here and rinse the motors in fresh water after each trip. As I have not owned the boat long I will be keeping an eye on how much salt appears under the cowl after a trip. I don't think my boats previous owner rinsed the motors and the salt I am seeing is an accumulation over time.
bunkergroup
Registered:1407517398 Posts: 265
Posted 1534972832
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#14
Steelhead. Its more mist than splashing that the motors inhale. There was a deckwash pickup running off center of the tunnel that was splashing the starboard motor. I have moved that.
bunkergroup
Registered:1407517398 Posts: 265
Posted 1534974423
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#15
Mlee76. I'm on my 2nd set of 07 75,s . The 2 I have now were at 60 and 80hrs when I purchased them. They are at 400hrs now.. Yes I have the side covers off regularly and have the bolts you mentioned and lower inlet manifold nuts wrapped in denso tape. Its a constant battle against corrosion.