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Chamberlain
6 cyl GM Conversion |
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No sound available |
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| Serial
No: |
1953 |
| Build
Year: |
1966 |
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| Owner: |
Neville
Gibbs |
| Original Owner: |
Unknown |
| From: |
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Tractor History
This tractor was originally a model 40KA. Now don't get me wrong here, these old ladies were just great
in their day, if you were working a 20 row seeder or a 14 disc plough. With farm acerages on the increase and
larger machinery on the market, this old girl had a dilema on her hands, she simply lacked grunt.
So what does one do about it? Major heart surgery will be required, the old power plant needs to be replaced
with a much strong one. Chamberlain had a great performer with the Super 70 & Super 90 tractors, powered
by 3 cyl GM (Detroit) engines, were most reliable and never let you down. So this is the way to go, but we need
to show these young lads a thing or too, no 3cyl donk is going into this body, it's gonna receive a 6cyl, now that's grunt.
The surgeon was consulted and a 6 cyl 6-71 series GM (Detroit) diesel replaced the old 2cyl Kero. Normally
after major heart surgery one would expect some recovery time, not for this old lady, she was on a mission. Those young
lads ( Super 70 & Super 90 ) who wanted her sent to a retirement village because she was too old and weak were about
to meet their fate.
The contest was about to begin, infact there was no contest as this old lady with new found grunt strutted her stuff, these
young blokes fears were now realised as they were relegated down the order of merit. With new found fire in the belly
and confidence to match, others outside of the Chamberlain family became very nervous as they awaited similar fates.
However all was not plain sailing, as with most major operations of this kind there were side effects, nothing too major
except from time to time the extra fire in the belly would cause her rear end to suffer from major Diarrhoea. This was
a small price to pay to keep such a fine old lady working, whom was destined for the "Life After".
To view the conversion progress photo's, click links Photo 1 Photo 2
Photo 3
| SPECIFICATIONS |
ENGINE
- GM Detroit Model 6-71, 6 cylinder vertical in-line 2 diesel, bore 4.25", stroke 5.00".
- Displacement 425.75 cubic inch, compression ration 16:1, rated speed 1,200-1,500 rpm.
HORSEPOWER
- 154.0 Max. belt, 130.8 Rated belt.
- 140.0 Max. drawbar, 105.0 Rated drawbar.
FUEL
- Diesel. Fuel tank capacity 18.0 imp.gallons.
- Filtration: strainer and water trap.
COOLING
- Water circulated through engine and radiator by centrifugal pump mounted on engine.
- Temperature controlled by thermostat.
GOVERNOR
- Mechanical. Controlled by hand lever.
ELECTRICAL
- 12 Volt starting and lighting system.
- Twin filament head lamps.
TRANSMISSION
- A three speed and reverse sliding spur gearbox mounted on the rear of the engine.
- Coupled by a universally jointed shaft to a high,
intermediate and low range gearbox mounted on the front of the differential.
- The two gearboxes are fitted with seperate change levers.
DIFFERENTIAL
- Bevel gear type with spiral bevel crown wheel and pinion.
- Pinion and differential shaft bearings are taper roller.
TYRE AND WHEEL EQUIPMENT
- Front - 7.50 x 18 on split cast wheels.
- Rear - 13.50 x 32 Dual on split cast wheels.
- Special rear, single 18 x 26, front, 8.25 x 20
STEERING
- Recirculating ball type steering gear.
- Connected to front wheels by adjustable draglink and track rods fitted with ball joints.
POWER TAKE-OFF
- Splined shaft is to the A.S.A.E. standard of 1.375 in.6B
- Shaft speed is 540 rpm. clockwise rotation (viewed from rear).
- Height above ground - 33.25 in. on 13.50 x 32.0 tyres.
OVERALL DIMENSION
- Length 135.0 in., Width 68.0 in., Height 90.0 in.
- Wheelbase 83.0 in.
- Turning circle 12ft-8inch.
| SPECIFICATIONS AND GEAR CHART ( M.P.H. on Standard
Tyres ) |
| Eng.rpm |
1 Low |
2 Low |
3 Low |
1 Int |
2 Int |
3 Int |
1 High |
2 High |
3 High |
| 1,200 |
2.5 |
3.1 |
3.8 |
4.4 |
5.3 |
6.4 |
10.3 |
12.5 |
15.0 |
| 1,500 |
3.125 |
4.0 |
4.8 |
5.4 |
6.5 |
7.8 |
12.8 |
15.6 |
18.8 |
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