Stormin Posted September 15, 2008 Share Posted September 15, 2008 CW Just out of interest are those wet liners? Do they just rely on the cylinder head to keep them in place? Thought most cylinder liners had to press fitted into a heated block. Quote Link to comment Share on other sites More sharing options...
gritineye Posted September 15, 2008 Share Posted September 15, 2008 Just think i can look forward to doing it all again. What a bummer, nothing worse than that! Life ain't fair sometimes mate, good luck with it. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 15, 2008 Share Posted September 15, 2008 Yes Norman they are wet liners,they have three rubber seals at the base,and in this engine a spacer plate between the head and block,the liners have a ridge around the top we call a top hat,will post pictures on rebuild.Dry liners are more common on later engines,they would in this case caused huge problems,and not allowed repairs in situ. This is one of the reasons they were used so repairs could of been affected at sea,enough spares would of been carried to completely rebuild the engine.Not in this boats case but in other applications . Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 15, 2008 Share Posted September 15, 2008 HI CW this may be of use for fault findinghttp://www.mlcmotorfactors.co.uk/Trouble%20Tracers/PistonTT.pdf Cheers Chris. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 15, 2008 Share Posted September 15, 2008 What a bummer, nothing worse than that! Life ain't fair sometimes mate, good luck with it. You can say that again ,problem is all the other jobs are falling behind. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 29, 2008 Share Posted September 29, 2008 Here we go again Had to fabricate this lifting plate to suport the front of the engine,reason being had to remove front cradle which trapped the sump between the block. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 29, 2008 Share Posted September 29, 2008 Manifold after the water cooled shield removed next the aftercooler cover was removed exposing cooler. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 29, 2008 Share Posted September 29, 2008 After cooler and lower housing removed next the cam housing. Quote Link to comment Share on other sites More sharing options...
AndyFowler Posted September 29, 2008 Share Posted September 29, 2008 You magicians can mind read ! I was just about to ask how the repairs where going mate ! Hope it all goes to plan !:-D Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 29, 2008 Share Posted September 29, 2008 You magicians can mind read ! I was just about to ask how the repairs where going mate ! Hope it all goes to plan !:-D :rofl::rofl::rofl: Piston not out yet only because the liner has debry from the piston on it and i didnt have my stones with me to remove it,Andy may have a go in the week.we still need to find out why,will do a pump quantity test next time down.It has to be on the fuel pontoon before the first Nov to beat the fuel increase.:shake: nice to see you getting on with yours.Also getting Gee ready for London Boat Show. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 30, 2008 Share Posted September 30, 2008 Cam housing off,the tube down the middle is the heater plug wiring. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 30, 2008 Share Posted September 30, 2008 It looks like this cyl has been washed,no water loss maybe excess fuel still have to check pump output for that cyl. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 30, 2008 Share Posted September 30, 2008 damage just showing. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 30, 2008 Share Posted September 30, 2008 Aluminium debris on valves Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 30, 2008 Share Posted September 30, 2008 and on seats. Quote Link to comment Share on other sites More sharing options...
Stormin Posted September 30, 2008 Share Posted September 30, 2008 It looks like this cyl has been washed,no water loss maybe excess fuel still have to check pump output for that cyl. Thought the cooling water came in from the sea? Or have I misunderstood? Is it simply captive cooling water cooled by heat exchanger to sea water instead of a radiator. Is the head serviceable with a regrind of valve seats? Hope it all works out and you find the root cause of the problems. Nothing worse than not finding the cause of a fault when you've stripped things down. Quote Link to comment Share on other sites More sharing options...
Chrisg Posted September 30, 2008 Share Posted September 30, 2008 You might be right about fuel if you have a look at page 15 of the link i posted Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted September 30, 2008 Share Posted September 30, 2008 CW I would say it could be caused by fuel problem. Have you pulled the injector yet? If it is direct injection it is possible for a fault to cause burnt pistons. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 30, 2008 Share Posted September 30, 2008 Is it simply captive cooling water cooled by heat exchanger to sea water instead of a radiator .Is the head serviceable with a regrind of valve seats?. Yup thats the one heat exchanger. we will save the head ,oh yes we will .we definitely will.no doubt about it.theres no way that boat gets a new head.new owner more like.cw. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 30, 2008 Share Posted September 30, 2008 You might be right about fuel if you have a look at page 15 of the link i posted I did look at that Chris thanks. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 30, 2008 Share Posted September 30, 2008 CW I would say it could be caused by fuel problem. Have you pulled the injector yet? If it is direct injection it is possible for a fault to cause burnt pistons. The injectors are out Richard,its pre combustion chamber i am afraid,one of the reasons i am a bit puzzled,they dont usually suffer like that.i will have to post picture of injector,they are tiny just a tip screwed to an extention tube,with a large threaded cap which screws it into the head.fairly low pressure but high volume i think. Quote Link to comment Share on other sites More sharing options...
N.O.S. Posted September 30, 2008 Share Posted September 30, 2008 So are you thinking damage might be caused by excess fuel washing lubrication off cylinder walls? I'd have thought with an engine that size it might cause a bit of black smoke, but of course black smoke is your trademark CW, so guess it might have gone un-noticed? :-D:-D:-D Good luck with the race to the fuel pontoon Quote Link to comment Share on other sites More sharing options...
Richard Farrant Posted September 30, 2008 Share Posted September 30, 2008 The injectors are out Richard,its pre combustion chamber i am afraid,one of the reasons i am a bit puzzled,they dont usually suffer like that.i will have to post picture of injector,they are tiny just a tip screwed to an extention tube,with a large threaded cap which screws it into the head.fairly low pressure but high volume i think. CW, I seemed to think you said before it was indirect, which do not generally cause too much of a problem. ........a mystery , but you will sort it no doubt. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 30, 2008 Share Posted September 30, 2008 So are you thinking damage might be caused by excess fuel washing lubrication off cylinder walls? I'd have thought with an engine that size it might cause a bit of black smoke, but of course black smoke is your trademark CW, so guess it might have gone un-noticed? :-D:-D:-D Good luck with the race to the fuel pontoon :rofl::rofl::rofl::rofl: The black smoke normally is a result of me being impatiant and not waiting for the turbo to catch up,and a certain amount of me peeing somebody off,usually the pretend harbourmasters. This engine has allways had blue/grey smoke problem on start up and at prelonged idle compaired to the other one.if you put it under load ,ie in drive but still tied to the birth it would clear.the injectors all new ,major pump o/haul by cat.new liners and rings as per last o/haul.i put it down to stem wear on the other head.there are no seels.maybe this no 2 pot was the culprit,allthough we did check the timing on this cyl ,by chance and the height for correct amount.dunno. Quote Link to comment Share on other sites More sharing options...
Guest catweazle (Banned Member) Posted September 30, 2008 Share Posted September 30, 2008 This is what Chris is referring to,must admit it looks familiar. Quote Link to comment Share on other sites More sharing options...
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