VICKERS MK6B's resto

[colin jones]

I am certainly convinced that this engine had not done that many hours as gears, chains, general moving parts appear to have little wear on them but corrosion is the only problem that I can see. the timing chains were seized solid but persistence is paying off. I was able to get the very small wire out, the very small washer and the pin out and 100% confident it will restore like new.
The Magneto, again has little wear and I don't think too much corrosion. I suspect it too will be resurrected. The dynamo is seized solid but it's just another thing on the list

[colin jones]

After removing the sump as gently as I could it was not a good sight. One corner is all but corroded away and a section of the floor as well and I havn't looked inside yet. Also the crankcase spacer is also quite corroded as well. I knew it was very thin walled as I could hear the sound just tapping it. Rather disapointing

[colin jones]

I may have to re-evaluate this engine The crank appears to be good and I see it does have sleeves but the bottom is a mess. I will consider fabricating the whole bottom section but that will be a last resort as some of may have been line bored and that is not something I can do if it requires precision.
At this stage I will weigh up my options so far.

[David Dunlop]

Colin.

Bit of a shame with regards to the engine corrosion. It looks from your photos the main engine block assembly is in three parts. Upper holding the cylinders and pistons, middle unit holding the crank and related bits and then a lowermost cast, flat looking rectangular oil sump. Interesting design, if true. Could make for a lot of flexibility for various installations, but also a lot of headaches for restorations. And, of course, the latter point would not have been on anybody’s radar in the Meadows Design Branch in the 1930’s.

David

[Dave lean]

Hi Col', with a bit of luck some of the lagonda folk may have a solution.

[Niels V]

I know it might be far fetched, But Jay Jeno had a lower half of HRG engine (think Meadows engine) https://www.youtube.com/watch?v=qZUG...735F5B&index=5
and there was also a feature about 3d scanning https://www.youtube.com/watch?v=n60N...735F5B&index=3

Maybe some this could help

[simon king]

Originally Posted by Niels V

I know it might be far fetched, But Jay Jeno had a lower half of HRG engine (think Meadows engine) https://www.youtube.com/watch?v=qZUG...735F5B&index=5
and there was also a feature about 3d scanning https://www.youtube.com/watch?v=n60N...735F5B&index=3

Maybe some this could help

I think the Hurg used the 4 cylinder, 1500cc Meadows Unit unfortunately.

[Richard Farrant]

Originally Posted by colin jones

I may have to re-evaluate this engine The crank appears to be good and I see it does have sleeves but the bottom is a mess. I will consider fabricating the whole bottom section but that will be a last resort as some of may have been line bored and that is not something I can do if it requires precision.
At this stage I will weigh up my options so far.

Colin,
The Lagonda club appear to have had some new sump castings made, maybe they are adaptable for the tank engine?

https://www.lagondaclub.com/shop/m45...eadows-engine/

I think the sump you have could be made of Elektron, a magnesium alloy, it was also used to make the mantlet in the turret.

Richard

[colin jones]

After a closer look, I can make a new sump and the riser above (I'll call it that)
But I will get the rest checked out first to make sure the top pieces can be resurrected. David, it has a sump, riser, crankcase, block, head, cover. Lots of bits that have to line up precisely. Quite a complicated system.
Dave, I have joined the Lagonda club but waiting for approval.
Richard, I would say you are spot on what it is made of and would be very hard to weld which is why I would make the parts out of steel if I do in fact go down that path. They certainly don't look like difficult parts to make but I do not want to create any more work that I already have. Hopefully the members of the Lagonda club may be able to steer me in the right direction.
Colin.