EXHAUST OUTLET

Re: EXHAUST OUTLET

feeds@yuku.com (pwinterfeld) — Sun, 02 Mar 2008 06:10:55 GMT

Perhaps some of the waxes may attract and show the soot more than others but I think (other than injector and engine problems) the soot or no soot is a factor of fuel freshness. When I first took my boat out I noticed it was smoking a little and there was some soot built up - The boat had not been refueled for two years - after I filled the tank with fresh diesel the "sooting " disappeared. I just motored for 4 hrs and there is no soot on the stern at all.

Peter
...

Re: EXHAUST OUTLET

feeds@yuku.com (nelsoncw) — Sat, 01 Mar 2008 08:37:41 GMT

Mark,

What brand wax did they put on your boat in Annapolis? I would like to try it and see if it lessens the soot on my transom.

Thanks,

Nelson

Re: EXHAUST OUTLET

feeds@yuku.com (pporcheron) — Fri, 29 Feb 2008 22:33:46 GMT

Catalina told me that they ship the 42 to Australia with the exhaust on the port side. Thruhull in the center of the waterline and 15in. from the transom. I installed mine 18in from the inside of the transom and the thruhull flange at the edge of the water in order to get the hose under the locker floor. I also had to use a 45deg. elbow(Centek).The engine sounds a lot quieter(no water splashing) Next trip out I will let you know the results.
Pierre
SHUMKA #899

Re: EXHAUST OUTLET

feeds@yuku.com (bimmerboy750) — Fri, 29 Feb 2008 17:25:53 GMT

I'd get a sooty transom if I get to around 7 knots. the swim platform goes awash around that speed. This season I was think of applying Rain-X. Anyone tried it in this situation before?

Rick
Painkiller
1991 C42

Re: EXHAUST OUTLET

feeds@yuku.com (markreilly) — Mon, 11 Feb 2008 15:42:55 GMT

Hi Pierre,
I was just reading all the 'stuff' and thought I would add my two cents. I had a similar problem on my 1983 C30. I know it has a much different exhaust port (directly on the bottom of the transome) but after about 10 hours of motoring, the transome would be 'sooty'. What I found was the wax I was using seemed to grab everything it could (soot, black streaks, etc.) I like the 'Colinite Fleetwax' because of it's cleaning and polishing...

Re: EXHAUST OUTLET

feeds@yuku.com (pporcheron) — Mon, 11 Feb 2008 15:07:08 GMT

Ken,
You probably have the "new" Yanmar, the slow turning model. Before I signed the papers I called Catalina to ask when they were introducing the new model and they said "no plan at this time". They delivered the new engine right after mine!!

Re: EXHAUST OUTLET

feeds@yuku.com (ajchan) — Mon, 11 Feb 2008 12:35:00 GMT

pporcheron wrote:...I will also see the water coming out. ...
Pierre
SHUMKA #899

Hi Pierre

I've noticed on the C42's around the club that there is a bit of soot on the transoms, but it isn't very pronounced. On TPO, I will get a cast that looks like a bath tub ring if I motor for an extended period of time. Fresh fuel and clean filters seems to go a long way to...

Re: EXHAUST OUTLET

feeds@yuku.com (kenfischer) — Sun, 10 Feb 2008 18:47:05 GMT

Pierre:

I too am curious about the reason for your black transom. My boat is only 7 hulls from yours and I do not have the problem you do. I have the stock prop and cruise at 1800-2500 RPM. Has your tach been calibrated?

Re: EXHAUST OUTLET

feeds@yuku.com (pporcheron) — Sat, 09 Feb 2008 12:04:33 GMT

This has been a problem from day one. I had the engine checked by Yanmar and declared ok. I now have 1000+ on this engine.
This is exhaust that I can smell but not see. I also had 3 different props on this boat ,the fixed p., Autoprop and Maxi-prop.
I also tried different additives. Some gave minor improvements.

Re: EXHAUST OUTLET

feeds@yuku.com (lakandjc) — Sat, 09 Feb 2008 11:12:55 GMT

Pierre:

FWIW on my 1994 50 HP I only got a VERY FAINT exhaust stain on the entire transom/swimstep area after many hours of motoring, e.g., 50+. I always thought this came from exhaust swirling around in that cavity for long periods, exhaust which I could smell but not see. This is based on putting nearly 700 hours on the engine during more than two years of cruising.

I agree with Jon that I would first look at oil consumption, prop size, injectors, RPM usage, etc before...

Re: EXHAUST OUTLET

feeds@yuku.com (vela42) — Sat, 09 Feb 2008 10:19:02 GMT

what are you getting on the transom? oil or diesel from the exhaust? I would be suspicious that maybe something greater should be checked. The injectors or injector pump can cause unburnt fuel to pass with exhaust causing a film. are you using excessive amounts of oil. Just a thought. I would think relocating is a big expense.

Jon

EXHAUST OUTLET

feeds@yuku.com (pporcheron) — Fri, 08 Feb 2008 19:54:09 GMT

I will not clean the transom everytime I go out next summer. I intend to reposition the exhaust outlet to the side of the hull. I will also see the water coming out. Kent of Catalina told me that he was going to send me a drawing...Apparently the Australian dealer always gets the side exhaust.Still waiting for Kent.
Has anyone done it and where was the thruhull installed?
Pierre
SHUMKA #899