Thornycroft T108 - Serial number / date of build

[wrisberg]

Hello mates.

 

Is there a way to figure out the date of the build on the engine, from the numbers? Is there a scheme for the year on the numbers?

 

Number on the engines

 

 

The green one

Thornycroft no: 108R

engine no:120536

serial no: 10550

 

On another engine i found on the web, the numbers where:

The blue one

Thornycroft no: 108

engine no: 373

Serial no:9545

 

Can I figure out some data from these numbers? Why is there a 108, and a 108R ??

 

Kind regards

 

JonasWrisberg

 

 

 

 

[wrisberg]

Found a bit on asap supplies.

 

"

The Thornycroft Type 108 is a 4 cylinder, 4 stroke, vertical, inline 1.799L diesel engine. Based on the BMC1800 B series engine block, Thornycroft marinised this in two versions. The Type 108 was heat exchanger cooled, and can be found in many inland and in shore boats. It was a popular commercial engine in small fishing boats, due to the Leyland van spares availability and pricing. The Type 108E was keel cooled for Inland Canal use.

The Type 108 was marinised in various forms, from the early MKI with cast small camshaft, the 108/2 with the modified block and larger cam profile, to the last 108/2R engines, based on the Leyland recon engine program. The engine was then built in Turkey, and there are a few changes in certain parts which cannot be fitted to the British built units.

From the MS-02-108 Thornycroft 108 leaflet, ratings are as follows:

1500RPM 21BHP 5.22LPH, 2000RPM 27BHP 6.32LPH, 2500RPM 33BHP 7.59LPH, 3000RPM 38BHP 9LPH.

[wrisberg]

Nothin about date/ year of the make? is this possible to find out, like on motorcycles and cars ?

 

Jonas

[wrisberg]

I guess not :-)

[Tony Brooks]

Is there a BMC engine number on an alloy plate riveted to a flat on the head beside the rocker cover? If so that may be a better line to follow but then again you may not like what you find - like it was definitely an ex vehicle engine so was second-hand when sold "new".

[Phil Ambrose]

Is there a BMC engine number on an alloy plate riveted to a flat on the head beside the rocker cover? If so that may be a better line to follow but then again you may not like what you find - like it was definitely an ex vehicle engine so was second-hand when sold "new".

Though if this was the case it may not be too bad because the engine could have been re-engineered / re-worked to a new standard.

Phil

[Tony Brooks]

It probably was but it is likely to have undersized crank journals and oversized bores. That means there is at least one less overhaul available to the owner before more drastic attention is needed like bore sleeving and metal spraying the journals.

[wrisberg]

No plate on this engine, my old ona had a brass plate on it.

 

This one hasn't got any

[Theo]

Not BMC.

 

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