Author Topic: Rebuilding a 1951 Lister CS 6hp  (Read 15235 times)


  • Hero Member
  • *****
  • Posts: 1557
    • View Profile
Re: Rebuilding a 1951 Lister CS 6hp
« Reply #15 on: February 21, 2006, 05:35:34 PM »
 It's a big deal when I can ship $100,000 in guns for what one Lister would cost!!  When buying cast iron it's good to either be buying close to home or by the ship load.

 True scrap iron is shipped in open holds and loaded/unloaded by magnetic if we could buy a lot of a hundred tons of scrap engines and sort through them later....   ;D

Off topic but a topic of pride--  I once built a rifle from parts bought from a gondola (train) car of scrap military weapons destroyed by cutting torch and shear (for $.50/pound) that later sold for more than $150,000.  The gun was built 32 years after I bought five dollars worth of "scrap iron".
Pics and ref. on request.    NO commercial interest...ect.
7200 hrs on 6-1/5Kw, FuKing Listeroid,
Currently running PS-Kit 6-1/5Kw...and some MPs and Chanfas and diesel snowplows and trucks and stuff.

Mr Lister

  • Full Member
  • ***
  • Posts: 147
    • View Profile
Re: Rebuilding a 1951 Lister CS 6hp
« Reply #16 on: March 20, 2006, 06:11:34 PM »

I have acquired another 1951 6hp engine needing a rebuild - this time a Startomatic engine.  I will use Indian parts on this one  - now that our shipment form India is landed in the UK.

The pictures are on the LCSOG  (Lister CS Owners Group)  (coppermine would not play ball)

Following this morning's 2 hour voyage into the unknown,  I can now report
some progress in stripping down the 1951 6hp SOM engine.

Basic tasks accomplished today:

Rocker cover off
Valve rockers off and useable
Cylinder head off
Valves and guides and springs out and reusable  with a little regrinding
Cylinder - twice subject to frost damage, repaired once - basically toast.
Bore was surprisingly clean and pit free *
Piston  -, calcium deposits,  rings all stuck, should clean up well, going
to dunk it in a jar of diesel for the next week
Little end -OK
Big end, minor wear but serviceable
Mains - OK,
Injector pump -  iron oxide based lifeform!
Injector - replace
Cam shaft, gears  and tappets free and serviceable
Push rods -a little weathered ;-)

*  Piston and bore had accumulated a kind of hard calcium carbonate (chalky,
limescale) oily deposit that bungs things up and is fairly tough. Will come
off with gentle scraping.  I guess this could be a minor leak of coolant
water, that then boils in the hot bore and on top of the hot piston and
leaves about 0.5mm of limescale behind on the top of the piston and seeps
down towards the top ring.

I now need to drain the sump and steam clean and take the grinder and
wirebrush to the crankcase and flywheels.

Bearing in mind that I have only had 4 hours on this engine and it's nearly
in bits, I would say that a less rusty could be totally stripped down,
assessed and rebuilt in a day or two.

I drove out the valve guides with a round drift and they came out with
almost no fight.  The lower end of the exhaust guide gets very hot in usage,
and the cast iron tends to embrittle. Mine has lost about 4mm in length from
a new part.

A drift made from brass or aluminium turned to the valve stem diameter would
the best tool to get these out.  The exhaust valve guide threads in for
about half inch, then you have to drift it.

The injector pump and injector are unlikely to be salvageable, the oilpump
seems free but the cam that drives it is stuck firm in the fully out

Tomorrow I will remove the cylinder studs (double locknut method) and get
the crankcase ready for steam cleaning.

There is one fascination with these big old engines, the great thing is that
the parts are big and chunky and very forgiving.



Mr Lister

  • Full Member
  • ***
  • Posts: 147
    • View Profile
Re: Rebuilding a 1951 Lister CS 6hp
« Reply #17 on: March 21, 2006, 03:50:23 PM »

The latest Lister pictures from this side of the pond are at

This issue of Lister News Includes:

Andy Mahoney's Homebrew Power System
Stripping down a 6hp 1951 Startomatic - The Good, The Bad and The Ugly!
Collecting a 1948 Startomatic from Cambridge

I am always on the look out for content, please email pictures or short articles, queries etc to


Andre Blanchard

  • Sr. Member
  • ****
  • Posts: 373
    • View Profile
Re: Rebuilding a 1951 Lister CS 6hp
« Reply #18 on: March 21, 2006, 04:24:27 PM »
Probably not relevant to a small vertical engine like this but I will throw out this caution anyway.:)

I have listened to more then one story of large engines on trailers running at shows while still connected to the tow vehicle.  At the end of the show the owner goes to drive the thing home only to find the U joints and or gear box have been pounded into junk.  I am guessing that if they had set the parking brake instead of just leaving it in gear there would not have been a problem.  These were large horizontal engines, 5000 to 10000 pounds for just the engine.
Andre' B.
Andre' B