Matilda

Lynn Eades · #1 02-11-11, 22:52

Is it a Leyland 680 derivative? Maybe George you could look in that direction?

matilda IIA · #2 03-11-11, 12:43

Hi Guys

Please see attached details

Engines are 7.5 litre

As a general rule, Matilda I and II are fitted with twin AEC engines (A183 and A184). Matilda II* (IIa), III and IIICS are fitted with twin Leyland engines (E148 and E149 or E164 and E165). Matilda IV, IV CS and V are fitted with twin Leyland engines (E170 and E171).

All lower numbers are the left hand engine.

The Leyland engines are all the same bore and stroke however the mounting and layout of auxiliaries are different.

Early engines have aluminium sumps, later types have pressed steel sumps as it was found that when the floor was bulged up as a result of a mine blast the aluminium sumps fractured resulting in engine failure.

I have seen some engines with cast sumps but they are few anf far between.

Kind regards
Matt

matilda IIA · #3 03-11-11, 12:48

Please see below some side view details of the engines, stearing clutch and gearbox detail

Kind regards
Matt

George Moore · #4 03-11-11, 13:18

Thanks guys, just what I needed.

I should have mentioned that I was needing photos of the engine and gearbox "out" of the tank, these are just what I need to show the shape of the block etc.

One query, the oil tank is mounted on the "outside" of each block, I see one of the photos has it mounted so it would be between the blocks, is this just to show things part assembled?

The later engines are listed as "improved Leylands", these seemingly had the oil tank attached, plus other additions such as oil cooler tubes running across the gearbox end of the blocks, improved filters etc.
Wasn't aware of the sumps though, thanks for all the info.

The manual for some reason has sectioned drawings of the AEC engine, which are useful, but strange in that the sump on the drawings is totally different to that fitted on the tank engines. The most obvious difference between the AEC and Leyland (there are others of course), but at first glance, the Leyland has a much wider and flatter rocker cover. I did not realise that the rocker cover came apart either, thanks for that.

If there are other photos, please send them on.

These really help, and thank you all very much.

I cannot get the link to work (?) but should you wish to see some of the model work I have done, look at www.mooresmilitarymodels.co.uk

Thanks again.

George.

matilda IIA · #5 11-11-11, 13:02

Hi George

The early leyland engines have the oil tanks mounted on the hull between the brake rest and fuel tanks. (painted yellow in previous photo) They also have the oil coolers mounted above the fuel tanks to the upper hull. all conecting piping is copper pipe.

The E170/171 motors have the oil tank mouned on the starter motor perch bracket. and the oil coolers mounted on the timming case end of the engine pack. This allowed for a much larger fuel tank as can be seen in the above photos.

I will get you some more details tommorrow.

Kind regards
Matt

George Moore · #6 15-11-11, 10:28

Thanks,
I enclose a drawing of the Leyland engines, with some questions.

Hope it makes sense.

George.

matilda IIA · #7 16-11-11, 07:06

Hi George

The crankcase is interchangable between eiter side, please see attached several views of left and right side of the motors. The sides are tappered from the sump flange up to the cylinder block mounting flange.

Each engine component is cast with the day, month and year it was made. I find this remarkable as their was a war on while they were at this !

Kind regards
Matt