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Old 08 October 2012, 15:46   #61
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I will keep my fingers crossed for you, not to find any more nasty surprises left behind by the monkey that put it together
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Old 08 October 2012, 15:54   #62
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Thanks. Engine block etc now dumped at the machine shop. It will be a couple of weeks before I will get it all back. Will spend the next few evenings stripping out the remaining heat exchangers and Tig welding the turbo intercooler up.

Should get the Jet mainshaft back tomorrow, so can put the jet back together as well.
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Old 08 October 2012, 16:02   #63
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Does the lobster pot thread contain more words than the smokey sabre?
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Old 08 October 2012, 16:04   #64
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Aiming to overtake the "Lobster Pot" shortly. Thank you for contributing to the word count.
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Old 09 October 2012, 11:02   #65
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Well I haven't really got anything to say right now, but I thought i would post something just to add to the word count
Did have a thought about the thermostat though and assume you will be fitting a new one anyway, but when the one on our cargo got taken out it was surprising how smokey it got very quickly on light load, soon as the temp dropped to 60C it started to smoke on tickover.
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Old 09 October 2012, 13:03   #66
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Yes, will be fitting a thermostat. pretty sure that was contributing to the problem, as it never really got warm.
This was doing exactly as you decribed, when left idling it would start to smoke and would continue to do so until it had a good thrash.
Apparently these engine are prone to getting too hot when pushed, so a common bodge is to remove the thermostat to keep it running cooler.
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Old 09 October 2012, 14:05   #67
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i seem to recall some engines of that era Perkins 6-354T possibly had 2 stats in parallel. I suppose you could do something like that to get more flow, or fit a bigger stat in the hose.
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Old 15 October 2012, 13:01   #68
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Feeling happier today, started putting some stuff back together! Built up the jet drives mainshaft with all new bearings and seals. There was quite a bit of damage on the shaft where the water seal is supposed to sit and seal, so I had the shaft turned down at that point and had a sleeve machined up and shrunk fitted and then turned down to the correct tolerance. Everything is nice and tight and should seal properly now. I have also had a new sleeve made for the cutlass bearing to to sit on, as the old sleeve was quite chewed up and worn. Once I have tidied up the tail housing, it can go back together. That will be the job done in the jet department.
I am impressed with the Hamilton design, very simple and easy to maintain and very strong.
Having rebuilt the Castoldi for the last project, I definitely prefer the Hamilton design.

Popped in and had a look at the cylinder head last week, It is looking very nice, should be collecting it this week.
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Old 25 October 2012, 11:27   #69
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So, the bad news continues.. The machine shop have measured the bores and number 5 has a +.005" outward wear area on the Starboard side of the liner about halfway up its bore! Why it should be like this is anybodies guess? There are signs that the bores have had water ingress as well. Apparently they only offered a +015 oversize piston, which are no longer available. At best it means new liners and pistons, at worst it means another block.
The upside is that No 5's problems will have contributed to the smoke problems. so I am gradually getting more answers together.
The head has been skimmed on its faces and the valve seats have been recut. Problem is there is a tiny contact area probably about 2mm wide on the outer edge of the inlet valves and the exhaust valves, although better, the inserts faces are still not very nice and No 1 still has a chunk out of it. In fairness I don't think we will be able to do much with that seat. Probably looking a new inserts now.

Am starting to get the hump with this...
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Old 27 October 2012, 08:42   #70
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sounds like you need a set of valves and liners.
If the pistons are within tolerance you may get away with liners and rings?
probably save a fair bit of money.
have you tried the likes of Sparex and Vapormatic for these parts?
they may be the same as some of the tractor/industrial engines?
the .005 in the middle of the bore would explain some of the problems too.
its an expensive business building an engine
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