Lister Engines > Original Lister Cs Engines
Another 6/1 Restoration
Dieselsmoker:
Hi.
I have been on and off busy with a 6/1 restoration for quite some time now. There are lots of problems with the engine. Plenty wear and missing/broken parts. The engine was obviously abused, and a seized camshaft ultimately put the engine out of service. It was then left outside for a loooong time... some people have zero mechanical sympathy. ??? I'm having to deal with lots of rust and grinding off thick layers of paint.
As I strip, I try to clean and repair as much as I can.
Basic progress -
Injector: Fixed and set. (Was stuck and blocked)
Diesel pump: Fixed (Was stuck and blocked)
Head: Fixed up and painted (Valves stuck, springs badly corroded)
Other parts in stages of getting painted.
Bottom end basically untouched.
Next big challenge: I will use the engine as a standby generator when I'm done with it, but with the project being just a hobby, cost is an issue for me. I don't want to do halve a job, but I will fix what can be fixed - more fun that way anyway. The cylinder bore is badly worn - apparently it is typical of high-hour engines to wear the chrome away towards the top of the cylinder near the exhaust port. There are also some scorch marks towards the top of the piston, but I'll see how bad it is once the piston's been cleaned properly, but I suspect I will be able to use the piston again. I would like to bore out the cylinder and put a liner in it, but I've been advised not to do this. Can anyone comment on past experiences with putting a liner in? Is it really impossible?
Engine when it landed at home. Doesn't look too bad? Couple of surprises waiting for me...
Mouse nest in head?
Head off
Underside head. Plenty rust.
Patience tester ;D
New style key... Some people can fix anything with a hammer.
(Notice the bolt hammered into the keyway.)
SOM Solenoid:
Serial Number:
Cleaning Piston:
Head soaked in oil - Springs rusted badly.
dieselgman:
Nice project!
If you have a competent machine shop within reach, then the cylinder sleeve is a very good fix for the bore wear problem. Your options are basically: sleeve the old bore back to standard, bore it and use oversize piston assembly, replace it entirely.
Thanks for posting!
dieselgman
Dieselsmoker:
Hi Dieselgman.
I'll clean the piston properly and report back on it's condition. I think putting a liner in is first prize when considering cost. I had a look on http://www.stationaryengineparts.com/ for a new cylinder block. The exchange rate of 18 South African Rand to the Pound plus shipping made my stomach turn! :-\
Do you have any idea how much can be safely bored out from the cylinder to put a liner in? Are the liners usually stepped?
If it turns out that the piston is no-good, I will go oversize. I see the aftermarket oversize pistons are all aluminium. Does the light piston not upset the balancing of the engine?
Regards.
Hugh Conway:
@Dsmoker:
Re: boring it out to re-sleeve. Had that done with my 6/1. worked fine, lots of meat in that cylinder wall to machine out and re-sleeve back to original 4.5" bore. I did not measure the O.D. of the dry sleeve, though if memory serves, it has at least 1/8" wall thickness. There was no step in the O.D. You must use a cast iron piston for the 6/1 or your machine will be out of balance at least. Al pistons are used in the 8/1.
Cheers, Hugh
starfire:
Seriously, I would return that cylinder and piston into service as is. I have seen many worse than this that ran just fine. The wear into the chrome coating is quite normal for this age, and seems not to cause any great concern with compression loss, blowby or oil consumption issues. The money saved too, as you have found is considerable. I suggest put it together and give it a run. I think you will find its all good, and you have nothing to lose by trying it anyway. These are not a Ferrari engine, they are an overbuilt agricultural design that will run happily with greatly out of spec tolerances, this is why they are 80 years old and still running.
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