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Post by TonyDunkley on Jul 27, 2019 15:52:04 GMT
Has it got heater plugs then or some sort of preheater on the air inlet? I noticed the air inlet cap was off. They're fitted with glow-plugs, one to each cylinder. The pipe you can see running from the (injection) pump side of the engine to the throttle housing on the inlet manifold isn't a solenoid controlled fuel feed pipe to a 'Thermostart' type gadget, . . it's an air pipe for the pneumatic governor. I can't really think of any engine maker other than Perkins who fit the Thermostart to their engines. God only knows why, . . it's the best cold start aid there is for small indirect injection diesels, . . leaves you with a lot more ''battery'' for turning the engine over with than 4 x electric glowplugs drawing lots of current, and dragging the battery voltage down just when it's all needed elsewhere.
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Post by Deleted on Jul 27, 2019 16:07:31 GMT
I've got one on my Perkins P4. This time of year it starts straight away but in cold weather its a godsend.
Some kelvins have them but I think they are retrofitted units.
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Post by faffer on Jul 27, 2019 16:54:18 GMT
Has it got heater plugs then or some sort of preheater on the air inlet? I noticed the air inlet cap was off. You know now i am sat back and chillin i see now When he farted it up it was from cold. Just turning it iver. Didnt preheat the gloplugs at all. So there for lots of smoke Then on second roind of trying it fired upalso no air fikter cant help Hell anyway i am having it Thanka guys you bought me a boat 😉😎😁
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Post by JohnV on Jul 27, 2019 16:57:34 GMT
Admiral of the Fleet, I think you are trying to catch magnetman
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Post by faffer on Jul 27, 2019 18:34:11 GMT
Admiral of the Fleet, I think you are trying to catch magnetman Bit off yet i teckon but also got a Zodiac airdeck 2.85 inflatable on its way aswell 😎
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Post by bargemast on Jul 27, 2019 18:59:13 GMT
Went to look ay the Norman 32. A struggle to start it but it handnt started for a while he said. How does it sound. This is after maybe 5 mins running It is the Merc OMD636 Many years ago I had a 1958 Mercedes 180 D which had been a taxi, when I bought the car it had done almost 225.000 Mls (360.000kms) engine still running beautifully without ever having been overhauled, I did about another 50.000kms with the car without any problems, a very econimical car to run too. I've had many other more luxurious petrol Mercs, but still have fond memories of the old 180 D. In my little Tjalk I wrote about about quite a while ago now, I had a 180 D engine too they were the OM-636 engines, definitely one of the very best and ever lasting engine Mercedes ever built. There's one thing that's very important with these engines and that's pre-heating long enough the glow spiral has to be bright red after which they normally only need a quarter turn of the startmotor to start doing their job happily. Peter.
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Post by bargemast on Jul 27, 2019 19:24:46 GMT
Forgotten to say that if you did buy this boat and you don't like the long pre-heating, they sell more modern and much faster glowing glowplugs nowadays for these engines.
That they are (were) very reliable engines is proved also by the fact that they were used on reefer-units.
Volvo used these engines too, and you'll find them in the Catfisher-28 coupled to a Volvo hydraulic twin prop drive.
Peter.
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Post by faffer on Jul 28, 2019 6:30:56 GMT
Thanks Peter.
How long should iet the plugs heat up for. I will see how it goes on the trip to home mooring but if it works then a time to heat them is no big deal aslong as i got the battery power. Thinking Last night about wiring up the alternator to the battery before we set off aswel.
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Post by Deleted on Jul 28, 2019 8:15:24 GMT
I have arranged it so I can operate the thermostart on the Perkins on a seperate battery if required. I use a 7ah 12v SLA block for this purpose.
Keeps the starter battery happy and the 7ah is portable.
I think it would be worth considering a 3S Lipo pack for the job actually. Might look into that. You could wire the glow plugs to a Deans RC connector then just plug the lipo into it for however many seconds then remove.
Takes out the problem of the start battery going low.
A fully charged 3S is 12.6v which is more or less the same as a charged Lead Acid so should be ideal.
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Post by bargemast on Jul 28, 2019 8:30:19 GMT
Thanks Peter. How long should iet the plugs heat up for. I will see how it goes on the trip to home mooring but if it works then a time to heat them is no big deal aslong as i got the battery power. Thinking Last night about wiring up the alternator to the battery before we set off aswel. Hi Wayne, to start with, I'll have to say : "Congrats with your new boat". To answer your question about how long to pre-heat, I wrote about that in the previous posting : "There's one thing that's very important with these engines and that's pre-heating long enough the glow spiral has to be bright red after which they normally only need a quarter turn of the startmotor to start doing their job happily." This can take between 20 and 40 seconds. I suppose that there will be one of the things like the one in the picture that I posted somewhere on the dashboard, and if you let it glow until you can see it (and feel it) bright red and really hot, the tips of the glowplugs should be as hot, and only then it will start (very quickly). Good luck and lots of fun with this new toy. Peter.
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