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Post by peterboat on Sept 26, 2018 15:30:19 GMT
Anyone that thinks diesel is safer than petrol should look at my car! I will post pictures tomorrow but safe to say that when a diesel hose splits and hits a red hot turbo the stuff burns and burns well!! Luckily it burnt out a coolant hose which sprayed red hot antifreeze all over the flames and put it out about 30 seconds before the fire brigade arrived however I suspect Lucy is a goner, which is a shame as in the winter her four wheel drive abilities are awesome!! I am resting at the moment and inbibing of a large G & T to calm the nerves
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Post by naughtyfox on Sept 26, 2018 15:34:52 GMT
Pics or it didn't happen!
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Post by thebfg on Sept 26, 2018 17:57:45 GMT
and I got knocked down on cwdf for suggesting diesel does burn.
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Post by Deleted on Sept 26, 2018 18:07:37 GMT
Anything burns, it is just a case of limiting the chances. Electric cars/boats will burn fast given the correct conditions. Even concrete burns.
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Post by JohnV on Sept 26, 2018 18:19:05 GMT
and I got knocked down on cwdf for suggesting diesel does burn. there are many things that don't exist in that parallel universe
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Post by peterboat on Sept 27, 2018 8:28:59 GMT
Red hot turbo from long steep hill and diesel hose failing at that moment and its a flame thrower ask me how I know! The other issue is the amount of plastic which burnt well
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Post by Deleted on Sept 27, 2018 8:55:21 GMT
Nasty !
Glad to hear you got away with it.
I've seen burnt out cars occasionally (non deliberate) and always assumed it was electric faults that caused it. Hadn't considered a fuel leak problem but yes diesel has a self ignition point which is lower than that of petrol. So you can set fire to diesel without a source of ignition easier than petrol.obviously
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Post by TonyDunkley on Sept 27, 2018 9:54:58 GMT
You can throw lighted matches into a bucket full of diesel fuel and they'll just keep going out, . . . different story with a bucket of petrol, though !
On the other hand, diesel that's vapourized after contact with hot surfaces like exhaust manifolds is highly combustible, and has on rare occasions been the source of engineroom fires onboard small commercial vessels such as river barges and tugs. When British Waterways made MCA conducted 'fit for purpose' examinations of commercial vessels operating on their waters compulsory in the mid 2000's, the MCA surveyors got very agitated about what they regarded as the close proximity of injector pipes to the un-cooled/un-jacketed exhaust manifolds on the Gardner LW's, LX's and L3's that most of the barges had back in those days, and that was despite the fact that on all of those engine types/models the HP pipes from the injection pump to the injectors disappear under the valve rocker covers on the opposite side of the engine to the manifolds.
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Post by Deleted on Sept 27, 2018 10:35:49 GMT
You can throw lighted matches into a bucket full of diesel fuel and they'll just keep going out, . . . different story with a bucket of petrol. On films they make out that a lit cigarette will ignite petrol. I've tried it as I used to smoke and do a lot of petrol bombs as a lad and the cigarettes always went out.
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Post by Deleted on Sept 27, 2018 10:53:23 GMT
Regarding the Gardner's engines I suspect the engine maker knew about the fire risk already and it was accounted for in the routing of the high pressure pipes at the design stage.
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Post by TonyDunkley on Sept 27, 2018 10:54:29 GMT
In the case of either diesel or petrol it's always the vapour that ignites, never the liquid itself, . . not enough oxygen present to support combustion.
The chances of there being both vapour and oxygen present in the right proportions above the surface of any petrol in an open container are, however, considerably greater than the same conditions existing just above the surface of diesel fuel in an open container such as a bucket or jug.
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Post by TonyDunkley on Sept 27, 2018 11:05:10 GMT
Regarding the Gardner's engines I suspect the engine maker knew about the fire risk already and it was accounted for in the routing of the high pressure pipes at the design stage. It's possible that they might have given some consideration to that when the engines were still on the drawingboard, or it might just have been the fortuitous consequence of there not being enough room to put the huge injection pump, complete with cambox and governor housing, on the same side of the engine as both the inlet and exhaust manifolds.
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Post by peterboat on Sept 27, 2018 12:57:43 GMT
Its the same with propane a bucketful of the stuff wont burn if you throw a lit match into it they did it on the training course I did
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Post by thebfg on Sept 27, 2018 14:07:30 GMT
diesel flash point is very high so hard to burn it but when it does go, it really goes
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Post by Deleted on Sept 27, 2018 15:32:45 GMT
Its the same with propane a bucketful of the stuff wont burn if you throw a lit match into it they did it on the training course I did Was it a very cold day?
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