TE20 and TEA20 heads

[Running TIde]

I started this thread on the restoration forum but it was suggested that it was better placed here on the Harry Ferguson one.

I have an old Ferguson tractor which I had thought was a TE20 but now think it is most likely a TEA20 (e.g. Sloping valve cover, oil filler on back, right side of block). There is no aluminum id plate. The serial number stamped on the engine block (left side) is S96,385). The cylinders are 80mm.

The head has a crack in it. I have located a potential replacement, but the combustion chambers are slight different, Mine is curve while the other has D-shape, straight sides. I think that the D, straight side may be the more standard one, but am not I am not sure). I am also not sure whether the potential replacement is from a TE20 or TEA20. I would like to know if anyone has knowledge about the different shape combustion chambers in the old TE20 and TEA20's. John Deere D on the restoration forum suggested that some of the TEA20 had different combustion sized chambers because they were designed to run on kerosene. More importantly for me, does anyone know if heads with the two different shaped heads are compatible and also whether the te20 and tea 20 heads are also compatible. As far as I can ascertain, there is only one size valve and valve stems for the old 80mm engines as well as only one head gasket, but I am a novice about all of this. Any insights and help, very much appreciated.

 

[John Deere D]

I started this thread on the restoration forum but it was suggested that it was better placed here on the Harry Ferguson one.

I have an old Ferguson tractor which I had thought was a TE20 but now think it is most likely a TEA20 (e.g. Sloping valve cover, oil filler on back, right side of block). There is no aluminum id plate. The serial number stamped on the engine block (left side) is S96,385). The cylinders are 80mm.

The head has a crack in it. I have located a potential replacement, but the combustion chambers are slight different, Mine is curve while the other has D-shape, straight sides. I think that the D, straight side may be the more standard one, but am not I am not sure). I am also not sure whether the potential replacement is from a TE20 or TEA20. I would like to know if anyone has knowledge about the different shape combustion chambers in the old TE20 and TEA20's. John Deere D on the restoration forum suggested that some of the TEA20 had different combustion sized chambers because they were designed to run on kerosene. More importantly for me, does anyone know if heads with the two different shaped heads are compatible and also whether the te20 and tea 20 heads are also compatible. As far as I can ascertain, there is only one size valve and valve stems for the old 80mm engines as well as only one head gasket, but I am a novice about all of this. Any insights and help, very much appreciated.

I placed several pictures on your original post....Restoration Process
Do the heads you have, look like any of the heads on those pictures????

 

[Running TIde]

John Dreere,

My tractor does seem similar to the pictures you posted but hard for me to distinguish from TE20. Unless I missed something, there were no detailed photos of the head. These are some photos of the head off my tractor.

Again thanks for you interest and help - any further insights, much appreciated

 

[John Deere D]

I started this thread on the restoration forum but it was suggested that it was better placed here on the Harry Ferguson one.

I have an old Ferguson tractor which I had thought was a TE20 but now think it is most likely a TEA20 (e.g. Sloping valve cover, oil filler on back, right side of block). There is no aluminum id plate. The serial number stamped on the engine block (left side) is S96,385). The cylinders are 80mm.

The head has a crack in it. I have located a potential replacement, but the combustion chambers are slight different, Mine is curve while the other has D-shape, straight sides. I think that the D, straight side may be the more standard one, but am not I am not sure). I am also not sure whether the potential replacement is from a TE20 or TEA20. I would like to know if anyone has knowledge about the different shape combustion chambers in the old TE20 and TEA20's. John Deere D on the restoration forum suggested that some of the TEA20 had different combustion sized chambers because they were designed to run on kerosene. More importantly for me, does anyone know if heads with the two different shaped heads are compatible and also whether the te20 and tea 20 heads are also compatible. As far as I can ascertain, there is only one size valve and valve stems for the old 80mm engines as well as only one head gasket, but I am a novice about all of this. Any insights and help, very much appreciated.

I own four TEA-20 Harry Ferguson's . All four Tractors, have Engine Heads, that were "designed for GASOLINE" (Canadian terminology) operation as the TEA20 has a Standard Motor Company engine,"NOT a Continental Engine.
The pics of the "combustion chamber" on your head is "NOT" the same as the heads I have.
I DO NOT know,if the two different designed Heads are the same thickens..?? Length of Head bolts / Studs may be different as well ????

 

[John Deere D]

NOTE different combustion Chambers..
Combustion chambers on your Ferguson Head are HUGE
Note Casting IDENT # on Gasoline Designed Head...

 

[John Deere D]

I started this thread on the restoration forum but it was suggested that it was better placed here on the Harry Ferguson one.

I have an old Ferguson tractor which I had thought was a TE20 but now think it is most likely a TEA20 (e.g. Sloping valve cover, oil filler on back, right side of block). There is no aluminum id plate. The serial number stamped on the engine block (left side) is S96,385). The cylinders are 80mm.

The head has a crack in it. I have located a potential replacement, but the combustion chambers are slight different, Mine is curve while the other has D-shape, straight sides. I think that the D, straight side may be the more standard one, but am not I am not sure). I am also not sure whether the potential replacement is from a TE20 or TEA20. I would like to know if anyone has knowledge about the different shape combustion chambers in the old TE20 and TEA20's. John Deere D on the restoration forum suggested that some of the TEA20 had different combustion sized chambers because they were designed to run on kerosene. More importantly for me, does anyone know if heads with the two different shaped heads are compatible and also whether the te20 and tea 20 heads are also compatible. As far as I can ascertain, there is only one size valve and valve stems for the old 80mm engines as well as only one head gasket, but I am a novice about all of this. Any insights and help, very much appreciated.

TE20 Heads (continental Engine)are NOT compatible with the TEA20 Engine "Standard Motor Company Engine".
The TEA20 differed from the TE20 by "the brand of motor". The TEA20 has a Standard Motor Company engine rather than a Continental Z-120 engine in the TE20

"Little Grey Fergie" TE20 ('TE' stood for Tractor England), the Ferguson TEA-20 was built in Coventry, England from 1948 to 1956. The main difference from its predecessor (TE20) was the Standard Motor Company petrol engine, it was fitted with, whereas the TE20 had a Continental engine.

 

[Running TIde]

John Deere,

Thanks again for your continued interest and help. So what engine do I have. My best guess now is that it is TED - although it has only a single fuel tank and has been run only on gas from before I acquired it. How can I confirm this?

 

[John Deere D]

John Dreere,

My tractor does seem similar to the pictures you posted but hard for me to distinguish from TE20. Unless I missed something, there were no detailed photos of the head. These are some photos of the head off my tractor.

Again thanks for you interest and help - any further insights, much appreciated

Info as per Internet:
Vaporizing engines used Tractor Vaporizing Oil (TVO) for
fuel. TVO engines are used in temperate climates such as
in the UK. TVO has an octane rating of about 55 to 70
Lamp Oil (sometimes known as kerosene) engines are also
called Zero Octane engines as the fuel they run on is Zero
Octane rated. Lamp Oil engines can only be used success-
fully in hot climates.
The engine must be kept hot when running on either va-
porizing oil or Zero Octane fuel. Otherwise the fuel will
not burn properly and, apart from misfiring due to wet
plugs, it will cause oil dilution in the oil pan. Both types
are started on gasoline until they reach working tempera-
ture and then the fuel supply is switched from gasoline to
the main tank containing the main fuel supply (TVO or
Lamp oil).
* Space does not permit the listing of all the many other
non-agricultural model variations that were available. A
wide variety of bumpers, fenders and radiator guards
were options. The industrial types all had two braking
systems comprised of two sets of brakes shoes in one wide
brake drum, one set basically the same as the agricul-
tural tractor and the other set operated hydraulically.
RECIPE FOR TRACTOR VAPORISING OIL (TVO)
(adapted from the Friends of Ferguson Heritage web site – UK)
Ingredients
Since TVO is not generally available, users have come up
with their own recipes for formulating a TVO fuel. In the
UK the formula must meet legal requirements and is lim-
ited to only two ingredients.
• Gasoline (unleaded is acceptable) – 98 Octane
• 28 Second Heating Oil - 20 Octane
Suggested TVO Octane values for tractor loads
• 55 if doing very hard work
• 70 if doing light work
•
Some sample mix ratios
• 1 part gasoline and 1 part heating oil yields 59 Octane
• 2 parts gasoline and 1 part heating oil yields 72 Octane
• 1 part gasoline and 2 parts heating oil yields 46 Octane
Note: Gasoline only is suitable for road runs (with the h

 

[John Deere D]

John Deere,

Thanks again for your continued interest and help. So what engine do I have. My best guess now is that it is TED - although it has only a single fuel tank and has been run only on gas from before I acquired it. How can I confirm this?

NOTE*
If, and when you rotate the Crankshaft,the Piston "Liners / Sleeves" are fee standing WET JUGS.
There's a gasket,(Note pic,Siamese) that seals, prevents engine coolant from entering the engine crankcase/Oil pan.
Do not rotate the Crankshaft with the head removed,until you have installed some means of preventing the WET FREE standing LINERS from moving vertically.

 

[Charles in Aus.]

It looks as if you have an early TEA20 six volt head , this makes sense as six volt blocks were 80mm , later 12s and all TEDS were 85mm. Later TEA and all factory TED heads had a large strengthening boss cast into the centre side of the head , that is not there on yours .
Six volt petrol tractors were sometimes converted to run on TVO ( Kerosene) but that didn't make them TED tractors . Often they were converted back which adds to the confusion.
12 volt heads won't fit on 6 volt blocks and visa versa .

 

[Running TIde]

Charles in Aus,

Thanks for this - it is definitely an 80mm block. It is currently set up as 12 volts but this is likely to have been a conversion. However, there does appear to be at least 2 different heads with 80 cm pistons as the one potential replacement I found came from a engine with 80 cm pistons but with straight d-shape combustions cambers. Not sure I can solve any this but luckily, I have found a head that matches mind exactly with no cracks and reconditionable. So for my purposes the saga is finished. Still one mystery, the replacement head had different length studs on the exhausts. So it must have had a different exhaust manifold. Not sure what if was in comparison to mind as the manifold was no longer with the old head.

Appreciate your help and insights.

 

[Charles in Aus.]

A few possibilities there .
The heads from Standard Motor Industies Vanguard and Triumph cars and vans were more powerful versions of the same engines . They had different heads in many different configurations to suit the application .
There were marine versions as well as stationary engines for power plants . Some of these used magnetos , whilst the car versions had distributors fitted with vacuum advance.
The Ferguson power plant used to power baling machines was also a common donor for tractors needing a new engine .
You may have one or a combination of parts from any of these.

 

[John Deere D]

A few possibilities there .
The heads from Standard Motor Industies Vanguard and Triumph cars and vans were more powerful versions of the same engines . They had different heads in many different configurations to suit the application .
There were marine versions as well as stationary engines for power plants . Some of these used magnetos , whilst the car versions had distributors fitted with vacuum advance.
The Ferguson power plant used to power baling machines was also a common donor for tractors needing a new engine .
You may have one or a combination of parts from any of these.

I shall keep this info with other TEA 20 important writings.
Thanks Charles

 

[Charles in Aus.]

One further thought on the longer manifold studs .
Once TVO fuel became popular due to high cost and rationing in the UK more and more tractors were converted .
The vital process needed to run this fuel was its preheating before entering the combustion chambers . Ferguson solved this with a heavier manifold and a heat retaining cowl . Other companies improved on this by manufacturing heavy cast iron manifolds , some with inspection hatches to enable soot removal others with taps to provide vacuum for milking machines . Amongst these companies was one called Fishleigh that produced the ' Super Vaporiser '