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Author Topic: Lister L Questions  (Read 141 times)

dmulally

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Lister L Questions
« on: June 07, 2018, 09:49:48 PM »
Hi All,

Fantastic forum and I've searched but not been able to find the answer I was looking for.

I have a Lister L that I use to power my off grid cabin via an alternator. It does a fantastic job and listening to it running is like hearing the waves crash at the beach for me.

I have a small 12l cylinder fuel tank hanging off the back but am wondering what is the best way to attach a larger tank. As it currently has the vacuum line and rigid fuel line for the top would I just need to fabricate a bigger one for these to plug into? Or can I put a low pressure fuel pump in and use a rubber line to the main fuel line? Perhaps gravity fed? Anyway, I'm after ideas. Attached is a pic of the fuel line to the left of the flywheel.

The other question I have is to what looks like a pressure relief valve that is on the side of the head. I got myself an instruction manual but it doesn't mention it. What does this do?

Cheers

Damian

ajaffa1

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Re: Lister L Questions
« Reply #1 on: June 07, 2018, 11:48:29 PM »
Hi Damian, I am no expert on the lister L but I am happy to share what little I do know. The fuel system on thee incorporates a lift pump mechanism that lifts fuel from the tank to the carburettor. They do not have what we would recognise as a float chamber so I suspect that gravity feeding from a raised tank could flood the cylinder. I would recommend fabricating a larger tank and fitting it in the original position using the original lines. Alternatively, it might be possible to fit a float chamber to the side of the original tank and then gravity feed that from a larger raised tank.

If I remember rightly, these had a brass valve on the side of the cylinder head, this was a decompression valve allowing one to crank the engine without busting a gut. Older engines that have lost some compression probably don`t require it`s use. If you are going to use it don`t smoke as it pumps a nasty mixture of air and gasoline into your engine shed.

Bob

38ac

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Re: Lister L Questions
« Reply #2 on: June 08, 2018, 10:30:26 AM »
As Bob said the carburetor on those does not have a float. The way it works is the fuel pump always pumps more fuel than the engine can use and the excess flows over a weir and goes back to the tank.  Thus unless your going to do some fancy rigging the fuel tank must be below the carburetor and fuel must be pumped up to it wit a gravity return to same tank.   

 I understand playing with engines, I do it a lot  ;) But I have an L and a  TL and for the the amount of fuel they use as compared to a CS diesel doing the same work you would quickly pay for a CS in fuel costs.
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Dieselsmoker

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Re: Lister L Questions
« Reply #3 on: June 08, 2018, 02:52:32 PM »
Nice engine!
I like that top water hose. I've been on the lookout for that type of hose but no luck so far.   
1963 Lister 6/1 genset - Restored
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ajaffa1

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Re: Lister L Questions
« Reply #4 on: June 08, 2018, 11:15:54 PM »
Nice engine!
I like that top water hose. I've been on the lookout for that type of hose but no luck so far.   

Hi Dieselsmoker, I also like that hose. I think I have seen hoses like that in some washing machines, check out your local repair shop.

Bob

mike90045

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Re: Lister L Questions
« Reply #5 on: June 09, 2018, 04:41:32 AM »
That top hose is "universal fit" radiator hose.  Good for an emergency, but poor long term in a car, because it wants to straighten itself out, and that stress eventually breaks the fitting off the radiator.