Work is progressing

D

Double Vision

Active Member
Joined
1 Dec 2013
Messages
46
Location
East Sussex
www.eastsussexdentures.com
Engines are now ready to go back in on Friday after a lot of =http://s133.photobucket.com/user/doublevision_photos/media/IMG_1475.jpg.html]
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We have fitted new exhausts, drive plates, driveshaft bearings, Re designed the cooling intakes and rebuilt the legs. Its a good feeling to get at bits in the engine room and clean them where you could not even see them with the engines in! The lumps are going back in this Friday and we are hoping to launch on the 10th subject to everything going back together ok and a successful test fire. Tank has been out and a new bottom welded on ( same prob I had with DV some of you may remember) Looking forward to see some of you guys in the solent this season :D
 
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They are a bit grainy due to bad light but everything is either new or repainted and shiney.
 
Fuel tank saga

This the state of the tank space before we took the tank out . The shiny bit is diesel that should be inside the tank!=http://s133.photobucket.com/user/doublevision_photos/media/IMG_0059.jpg.html]
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And as you can see by the tide mark on the side of the tank it was a problem that really needed sorting.=http://s133.photobucket.com/user/doublevision_photos/media/IMG_1366.jpg.html]
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After a lot of welding and pressure testing the tank is now back where it should be.=http://s133.photobucket.com/user/doublevision_photos/media/IMG_1484.jpg.html]
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The pipes down to the transom shields and the exhaust elbows (still to be fitted). The former had rotted to the point they had gone soft at the joint with the rubber bellows - a potential sinker! The exhaust elbows had split through I presume a freeze up at some stage. They were not leaking but with the resultant corrosion it would not have been long til they did.
 
Double Vision said:
The pipes down to the transom shields and the exhaust elbows (still to be fitted). The former had rotted to the point they had gone soft at the joint with the rubber bellows - a potential sinker! The exhaust elbows had split through I presume a freeze up at some stage. They were not leaking but with the resultant corrosion it would not have been long til they did.
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That's interesting, thanks. I'm doing my own refit at the moment, and the yard recommended that I replace the exhaust horns, although I'm struggling to see much wrong with the old ones. The water injection elbows were ok on mine. Expensive components though.
 
jimmy_the_builder said:
That's interesting, thanks. I'm doing my own refit at the moment, and the yard recommended that I replace the exhaust horns, although I'm struggling to see much wrong with the old ones. The water injection elbows were ok on mine. Expensive components though.
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If you have the engines out its well worth doing. if you check under the rubber caps or if they are earlier ones the very top where they join the bellows between the elbow for powdering or softening of the ally then you have to bite the bullet and do it. Surprisingly no one does aftermarket versions but the oem ones are around £365 a side for a 290 or dpa drive.
 
Robg71 said:
Did you repair your fuel tanks or replace with new.
Was it problem cleaning enough for welding after diesel contamination. Im guessing Ali tanks...
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I had the old one repaired. I sent it to a the Hartlepool radiator company who did my first one. They seem to have all the gear to do it. They also go under the name of "Tank Renu". I was recommended by someone on the forum. They do a great service, send a courier to pick it up, repair and pressure test and deliver back. Bill was just over £500 which is better than 2K I was quoted for a new one.
 
Great job! Very satisfying to put things right. When we did ours we spent hours getting the engines clean of all corrosion before we re-sprayed. Yours look great :)
 
Hi Paul. I've had a couple of peeps at the boat JUST AMAZING she looks brand new what a shine ENGINES look brilliant good luck for Friday (Will be back at sovereign H 20 ASAP) weather not looking good poss Thursday or Sat
 
epervier said:
Hello Paul,

I thought for a moment I was in a time warp, so you've bought another Martinique, did you have to do much work on the donks? or was it mainly cosmetic?
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Yes I am a glutton for punishment. The engines are fine. They both pull their 3900 rpm at full pelt and the boat is a knot faster (31knots) than she was when new. It was just all the white leg bits that needed sorting and a derust and paint job.
 
Winchy51 said:
Hi Paul. I've had a couple of peeps at the boat JUST AMAZING she looks brand new what a shine ENGINES look brilliant good luck for Friday (Will be back at sovereign H 20 ASAP) weather not looking good poss Thursday or Sat
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Hi Keith! It will be great to have you back! Have a safe trip ok and we will have a pint soon?
 
Double Vision said:
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Nice going DV
That looks a nice tank. Corners folded with nice radius, butt weld made after the folded corner. Can you say a bit more about why you think it failed please? Is the tide mark just because it sat in a puddle of dirty bilge water? The tide mark seems quite high - a lot of bilge water I mean! Also why is the tide mark that shape? Thnaks
 
jfm said:
Nice going DV
That looks a nice tank. Corners folded with nice radius, butt weld made after the folded corner. Can you say a bit more about why you think it failed please? Is the tide mark just because it sat in a puddle of dirty bilge water? The tide mark seems quite high - a lot of bilge water I mean! Also why is the tide mark that shape? Thnaks
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Hi JFM
The tank failed from corrosion to the Ally on the side of the tank and not the bottom funnily enough. It had been "foamed" in with that 2 pack stuff which I don't believe is closed cell so it acted as a sponge.
When I had got the tank out I noted about 2 inches of diesel sitting on about 6 inches of water which by the smell of it had been there a very long time (that was a month ago and no sign of Legionella yet) Bear in mind I had run the level down to around 120 litres which had allowed some to seep back in through the perforations. Oddly enough the filters were reasonably clean as was the residual fuel in the tank.
The tide mark (browny yellow bit shows the maximum hight the leak achieved in the tank space, the corroded area is where the foam had been. If you look at the top there are still 2 patches of foam still attached.
Needless to say I have replaced the tank without any foam, fabricating more brackets to hold it in place. It is a snug fit in the tank space anyway and has a large alloy angle bracket holding it down.
Perhaps this is a warning to all owners of squeekers of this era as this is the second boat I have had to do this job. There are a few M 36s around with twin petrol V8s which could end in a very bad way!
 
Many thanks for all that info, and good going. All sounds sensible. Anyway I guess with careful looking after the boat you can ensure that tank compartment never gets wet to begin with
 
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