Lister Engine Forum

Slow Speed Diesel Engines => Other Slow Speed Diesels => Topic started by: 38ac on November 05, 2022, 12:46:29 PM

Title: Bamfords shop work
Post by: 38ac on November 05, 2022, 12:46:29 PM
Hi all,  couple people messaged me wondering what's happening. Shop is busy, harvest going on work never ends.
Some pics of current work load. First is part of the slow speed waiting line which is 4 Z2 Bamfords, 2 Lister CS twins, 1 VA. Next is current project which is a 10HP Bamford. Ma y shop made parts go into a Bamfords build. This one had also been left to freeze up and severely broke the head. Waited 6  months on the best welding shop in the states to weld it and I have to relocate various bores. These heads use a copper sleeve to separate the injector from the water jacket which I make in the shop. Showing the sleeve and head set up to bore the hole for it after it was closed up during welding. Also shown is the wet sleeve cylinder block. The wet sleeve was bored for a thin wall dry sleeve. The original piston was reground to make it round again.  The bore is then adjusted to the reground piston and rings fitted.  No crank bearings are available so they are also shop made. More in next post.
Title: Re: Bamfords shop work
Post by: 38ac on November 05, 2022, 12:54:03 PM
 On with the head. Once the sleeve bores are to size the milling cutter is used to make clearance for the nut that retains the tip and a hole is drilled for the tip. I didnt take any pics before starting my work the head was a mass of furnace welded cast iron. Also looking down in the injector hole showing the 3 bores completed.
Title: Re: Bamfords shop work
Post by: 38ac on November 05, 2022, 12:57:43 PM
Here is the sleeve and shop made tooling that is used to swage it in place tightly for a leak proof seal.  Also the bottom side of the head which was a mass of cracks. Still have to cut valve seats and the releifs.
Title: Re: Bamfords shop work
Post by: dkmc on November 05, 2022, 12:59:04 PM
Always good to see project pics from your shop, nice work.
Title: Re: Bamfords shop work
Post by: ajaffa1 on November 05, 2022, 08:22:43 PM
Wow, the guys that welded that head back together did a great job. Welding cast iron is a very specialized skill as the work piece needs to be heated before welding and then very slowly cooled after, to prevent cracking.
No surprise to see you are busy and doing good work as usual. How is the bump clearance set on the Bamford? I`m guessing shims between the cylinder and crankcase.

Bob
Title: Re: Bamfords shop work
Post by: BruceM on November 06, 2022, 05:43:51 PM
+1,  Fantastic work to fully restore what most would consider scrap.   I didn't realize such serious head defects could be restored, and the amount of highly skilled custom work here is awe inspiring.  Bravo, Butch.

Thanks for taking the time to give us a peek into your busy shop!
Bruce
Title: Re: Bamfords shop work
Post by: 38ac on November 10, 2022, 12:54:38 AM
Bob, The Bamfords cylinder block is all part of the crankcase. Shims are used under the head gasket to set the bump clearance.
Got a couple minutes on the head today before other work drug me away. The valve heads on a Bamfords are set even with the gasket surface. The weld shop bored the ports to size. The first step for me on this welded up head is to lower the valves down a bit prior to cutting seats. I could cut this all the way down with the Neway seat cutters but would be very slow. So I used the guide piloted tooling that I use to install hard seats.  Also shown is the valves sitting in the recesses I cut showing I still have a ways to go with the 45 degree seat cutter. No hard seats will be used on this head.
Title: Re: Bamfords shop work
Post by: dieselspanner on November 10, 2022, 05:38:07 PM
Nice work once more. Butch.

Cheers
Stef
Title: Re: Bamfords shop work
Post by: 38ac on November 11, 2022, 03:47:53 PM
Cutting the proper 3 angle valve seats with Neway tooling and the valves set to proper depth.
Title: Re: Bamfords shop work
Post by: 38ac on November 11, 2022, 03:52:36 PM
Setting the head and installing pieces. Very satisfying to see this engine about ready to start as its been in the shop 19 months.
Title: Re: Bamfords shop work
Post by: BruceM on November 11, 2022, 04:41:24 PM
I'd forgotten the Bamford is direct injection.  Nice photos, she is a beauty. 
Title: Re: Bamfords shop work
Post by: cobbadog on November 12, 2022, 10:30:21 AM
Yes it is a pleasure to see that with the right ability some can resurrect items deemed stuffed. I saw a story of a guy who did a alloy heads for a living and he brought many back from the dead. It certainly is a real talent,well done.
Title: Re: Bamfords shop work
Post by: 38ac on November 24, 2022, 04:13:53 PM
The Z10 ready to ship, made one phone call and sold it. Its not going to be a toy, will be pumping irrigation water to earn its keep. I removed the period correct fuel filter and added a nice RACOR unit in it's place.
Title: Re: Bamfords shop work
Post by: BruceM on November 24, 2022, 07:09:35 PM
What a beauty.   Great that she's going to be a working engine again!
Title: Re: Bamfords shop work
Post by: dkmc on November 24, 2022, 11:04:43 PM
Always great to hear about an engine that's commissioned to do important work.
Title: Re: Bamfords shop work
Post by: cobbadog on November 25, 2022, 04:59:24 AM
Beautiful workmanship and happy to hear that it is going back to work again to do what they are designed to do.
With the colour green are Listers Brunswick Green and if so is it Deep or Mid Brunswick Green?
Title: Re: Bamfords shop work
Post by: ajaffa1 on November 25, 2022, 09:04:10 PM
Well done, what a lovely old machine. I suspect that it will outlast any modern pumping equipment and be much more efficient.
I don`t believe that Brunswick green is available in the USA so it would be interesting to know what color that is.

Bob
Title: Re: Bamfords shop work
Post by: broncodriver99 on November 25, 2022, 10:36:40 PM
I'm not sure which color Butch uses but I found an off the shelf color called "Mack Green" that is pretty close. Maybe not quite as dark but a close match to the original examples I have seen. It is the stock color for the heavy truck manufacturer Mack Trucks here in the US. Then again I have 3 original CS engines that I imported from the UK and all 3 have slightly different paint. Here is a startomatic base that I stripped and repainted with that color a few years ago.
Title: Re: Bamfords shop work
Post by: 38ac on November 26, 2022, 01:54:54 AM
Ya of you give the European color codes to a paint supplier in the states your just going to get a dumb look. Our pigments must be different because they absolutely cannot match mid Brunswick green here. Ive tried with painted samples from England and some paint that A good friend here on LEF sent me.
 The Banford is painted with Rustoleum Hunter green, the closest thing Ive found here.