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rnbenton
2589 Posts |
 Posted - Mar 08 2010 : 11:10:10
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What is the best cleaner everyone has found for cleaning the dark diesel exhaust build up on the stern of a diesel powered boat.
I cleaned mine using Orange Blast and it did a good job but took LOTS of elbow grease and rubbing to do so.
Is there an easier way to do it?
Bob
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Carver Voyager 28
Twin Yanmar Diesels
"Jimbo Song" |
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Dave H
USA
353 Posts |
Posted - Mar 08 2010 : 11:28:19
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| Simple Green. Spray it on and let it sit ~5 min. Cleans off very well. It does however remove wax so rewax afterwards. |
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Shadowcruzr
USA
10233 Posts |
Posted - Mar 08 2010 : 11:30:06
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| go get fireplace glass cleaner and try it in a small area. |
Paul
ETC, USCG, Ret
Dispite the suicide bombers and the burning desire to kill infidels, we are a peaceful religion... |
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Capt. Bill1
USA
5625 Posts |
Posted - Mar 08 2010 : 11:31:39
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Any good degreaser should do it. I like Zep at Home Depot because it's cheap.
If your gelcoat is oxidized it can be a real pain to get out. And in fact you may not get it fully clean with out compounding or wet sanding.
After you get it very clean, compound and polish it very smooth then seal it with several coats of some thing like Zaino or perhaps Pro Polish. Wax works but you just strip it off every time you use the degreaser and so you have to reapply it each time. Zaino on the other hand holds up to several degreasings (more if you dilute the degrease a bit)and makes it far easier to clean off the soot each time. |
The two most common elements on Earth are oxygen and stupidity.
Creationism is to science what storks are to obstetrics.
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Robyns Nest
5427 Posts |
Posted - Mar 08 2010 : 12:06:04
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If you use wax the soot sticks even worse. You have to use a polish instead of wax. If you do what Bill says and get the gelcote back to smooth condition, try using Rejex. Atleast 2 coats.
I've had great luck with it and can use regular boat soap to remove the soot.
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1998 48 Ocean Super Sport
2003 26 Triton 2690
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"The future ain't what is used to be."
- Yogi Berra
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Shadowcruzr
USA
10233 Posts |
Posted - Mar 08 2010 : 12:33:58
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| If you can find 3M clear film for protecting the leading edge of airplane wings, that would be the ticket! |
Paul
ETC, USCG, Ret
Dispite the suicide bombers and the burning desire to kill infidels, we are a peaceful religion... |
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caltexfla
2606 Posts |
Posted - Mar 08 2010 : 13:50:12
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Rejex works great. I have two old 8 cylinder Detroit Diesels and I just rarely if ever get any soot at all on my transom; if and when I do get a trace it comes right off with a hose.
You should find out why you are getting noticeable soot. Don't you have new engines? Is this part of the Yanmar break-in process? If not, are they over loaded, perhaps?
George
Hatteras 56MY
Boston Whaler 130 Sport |
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caltexfla
2606 Posts |
Posted - Mar 08 2010 : 13:50:12
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Rejex works great. I have two old 8 cylinder Detroit Diesels and I just rarely if ever get any soot at all on my transom; if and when I do get a trace it comes right off with a hose.
You should find out why you are getting noticeable soot. Don't you have new engines? Is this part of the Yanmar break-in process? If not, are they over loaded, perhaps?
George
Hatteras 56MY
Boston Whaler 130 Sport |
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rnbenton
2589 Posts |
Posted - Mar 08 2010 : 14:46:03
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quote:
Originally posted by caltexfla
Rejex works great. I have two old 8 cylinder Detroit Diesels and I just rarely if ever get any soot at all on my transom; if and when I do get a trace it comes right off with a hose.
You should find out why you are getting noticeable soot. Don't you have new engines? Is this part of the Yanmar break-in process? If not, are they over loaded, perhaps?
George
Hatteras 56MY
Boston Whaler 130 Sport
Right after the installation the Yanmar guy ran it in gear tied to the dock for a short while, just enough load to build up temps prior to sea trial. No forward motion, smoke got trapped under the swim platform, left a little soot residue.
Haven't had any noticable build up since then so wanted to give it a good cleaning. Just asking for good solutions for future spring cleanings, etc.
Bob
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Carver Voyager 28
Twin Yanmar Diesels
"Jimbo Song" |
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Shadowcruzr
USA
10233 Posts |
Posted - Mar 09 2010 : 06:26:05
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| Black smoke is a sign of too much fuel and not enough air. Diesel boats are notorious for not allowing enough air into the engine space. |
Paul
ETC, USCG, Ret
Dispite the suicide bombers and the burning desire to kill infidels, we are a peaceful religion... |
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November Charlie
USA
5463 Posts |
Posted - Mar 09 2010 : 06:52:18
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quote:
Originally posted by Capt. Bill1
Any good degreaser should do it. I like Zep at Home Depot because it's cheap.
If your gelcoat is oxidized it can be a real pain to get out. And in fact you may not get it fully clean with out compounding or wet sanding.
After you get it very clean, compound and polish it very smooth then seal it with several coats of some thing like Zaino or perhaps Pro Polish. Wax works but you just strip it off every time you use the degreaser and so you have to reapply it each time. Zaino on the other hand holds up to several degreasings (more if you dilute the degrease a bit)and makes it far easier to clean off the soot each time.
This. Except I stick with the Simple Green environmentally friendly formulation, and dilute it a LOT. Doesn't take much. |
-Mike
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November Charlie
USA
5463 Posts |
Posted - Mar 09 2010 : 06:55:40
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quote:
Originally posted by Shadowcruzr
Black smoke is a sign of too much fuel and not enough air. Diesel boats are notorious for not allowing enough air into the engine space.
Indeed. I was involved in the OT&E of a boat with a pair of Yanmar 6LPTE's. At speed they overwhelmed the engineroom vents and pulled a vacuum in the main cabin - enough so that you couldn't open the door without bringing the engine down. |
-Mike
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pdecat
USA
23652 Posts |
Posted - Mar 09 2010 : 07:29:52
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also a sign of overloading. Too much fuel for the air flow allowed by the load restricted rpm. You dont say how high he reved them but doing that to your new engines sounds like attempted engincide IMO. Sure it was a quick way to warm them up and I'm sure he was in a hurry to get a beer so he didnt have time to run the boat for a few minutes. Hey, next time you are in a cold climate just drop your car's shifter into drive, stomp on the brakes and floor the throttle, it'll warm up quickly too.
Between diesel mechanics and boat salesmen advising owners it is a wonder diesels last at all. |
Bruce
legal disclaimer;
posts are amateur opinion only and should not be relied on as reasonable, safe, proper or in any way recommended.
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Freddy
USA
3765 Posts |
Posted - Mar 09 2010 : 07:55:45
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A note on diesel smoke from the Cummins section, Maxum Owners site:
Smoke from your Engines
(Diagnosing you engine problems by the color of your engines smoke, and oil consumption)
Black Smoke is caused by partly burned fuel, a dirty air filter, blocked intercooler, low compression, failed or failing turbo, failing injector pump, or incorrect timing. Black smoke, sooting, on the 450C can be reduced dramatically by changing to 5 hole, 480C injectors. B series owners, as of this time, 8/04 there is no replacement for the original injectors in your engines.
White Smoke is usually the wrong grade fuel, misfiring cylinders, clogged injectors, or simply a normal start up during which the engine is cold and is normal in many engines during the "break in" period of up to 300 hours.
Blue Smoke tends to be lube oil being burned during combustion. Very similar to those "Old Cars" that we see sometimes on the highways. The Blue Smoke can be caused by broken or missing valve seals, worn piston wipers, piston rings, or scored cylinders. Also blue smoke or excessive oil consumption can be caused by a blocked intercooler which will restrict the amount of air entering the engine. When this happens it is not unusual for the engine to suck engine oil down the valve stem and into the combustion chamber. The result is blue smoke and disappearing engine oil. Your intercooler needs to be removed and cleaned between 500 and 100 hours of operation.
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"Freedom is never more than one generation away from extinction.
We didn't pass it to our children in the bloodstream. It must be
fought for, protected, and handed on for them to do the same. "
" Ronald Reagan" |
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rommer
11802 Posts |
Posted - Mar 09 2010 : 07:56:59
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quote:
Originally posted by Robyns Nest
If you use wax the soot sticks even worse. You have to use a polish instead of wax. If you do what Bill says and get the gelcote back to smooth condition, try using Rejex. Atleast 2 coats.
I've had great luck with it and can use regular boat soap to remove the soot.
What he said!
Rejex doesn't solve sooting but sure makes it easy to get rid of and looks really GREAT!
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WLC - We love Champlin's! |
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L. Keith
USA
1677 Posts |
Posted - Mar 09 2010 : 08:01:29
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| What's wrong with running under load while at the dock? I do it all the time and my Gray Marine 6-71 started life in a Higgins Boat. |
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Capt. Bill1
USA
5625 Posts |
Posted - Mar 09 2010 : 08:09:05
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quote:
Originally posted by Robyns Nest
If you use wax the soot sticks even worse. You have to use a polish instead of wax. If you do what Bill says and get the gelcote back to smooth condition, try using Rejex. Atleast 2 coats.
I've had great luck with it and can use regular boat soap to remove the soot.
Yeah, the only good thing about using wax is the fact that the soot sticks to the wax and washes away with the wax as you degrease.
But any of the polymer sealers are far better than using wax.
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The two most common elements on Earth are oxygen and stupidity.
Creationism is to science what storks are to obstetrics.
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vic33004
USA
1094 Posts |
Posted - Mar 09 2010 : 10:32:00
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| before we went to LSD and ULSD i had lots of practice removing soot from the swim platform. there are a couple products that i've found make quick work of it; FSR and Roll Off. both seem to work best when applied to a dry surface and they both remove any wax on the gelcoat so you'll need to reapply wax where you use this stuff. i've used rejex in this area and when its fresh it will let you remove most soot with simply soap and water when you wash down the boat. the rejex seems to be more slippery than wax but it too comes off pretty easily as soon as you apply any cleaning compounds. kinda reminds me of the movie..........wax on......wax off.....lol. the good news is that ULSD has made this task a whole lot less frequent now. :-) |
Vic33004
02 Regal 4260 |
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370 Motoryacht
USA
123 Posts |
Posted - Mar 09 2010 : 14:03:46
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Heres a good question...
What have you done to make your engine room breathe better now that you have 2 diesels sitting under the cockpit? I know that a few different Carvers in the 80's and early 90's came with different engine room vents (larger) so the diesels could breathe. Take a look at a 42 Carver MY, the gas version has small louvered type vents, the diesel has a large panel style that looks like a grate on the side.
May not be related now, but you might save yourself some aggrevation in the future.
Gas -
Diesel -
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Topic |
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Diesel Exhaust Residue