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Case 1690

Production years: 1980–1983 • Assembly plant: Racine, Wisconsin, USA

Compare with other modelsValue machine
Engine horsepower
100 HP
PTO: 90.39 HP
Displacement
5.4 L
6-cylinder engine
Drive and chassis
4WD
Synchromesh (12F/4R)
Operating weight
3,971 kg
8,755 lbs

Sources and field evidence

Catalog Archive: Baseline specifications compiled from historical manufacturer archives and equipment registries. Laboratory test report verification in progress.

Case 1690
VLM Verified Authentic
Case 1690

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Engineering & Capability Benchmark

Specific output, tractive ratio, and segment percentile

Utility & Farmyard Workhorse
Global Tractor Fleet Power SpectrumTop 64% of all indexed machinery
Compact (20 HP)Utility (100 HP)Row-Crop (250 HP)Titans (600+ HP)
Specific Output
18.5 HP/L
Aspiration: Unknown
Traction Ratio
39.7 kg/HP
Agile transport & crop care
PTO Efficiency
90%
90.39 PTO HP rated
Hydraulic Flow
Standard
Auxiliary implement ports

Engine and power specifications

Engine model
J.I. Case
Fuel type
Diesel
Rated horsepower
100 hp
Rated PTO Power
90.39 hp (Case specification)
Drawbar Power @ Rated Engine Speed
72.55 hp (Nebraska OECD Test 2218)
Cylinders
6
Displacement
5.4 L (329 ci)
Bore / stroke
3.939x4.50 inches 100 x 114 mm
Rated RPM
2200 RPM
Crankcase oil capacity
N/A
Coolant capacity
16 qts (~15.1 L)

Maintenance picks for the 1690

Filters, oil and common wear parts for this model.

Transmission and chassis specifications

Transmission type
Synchromesh (12F/4R)
Gears (forward / reverse)
12 forward / 4 reverse
Drive system
4WD
Wheelbase
100.5 in
Front tire
10.00-16
Rear tire
18.4-34
Hydraulic flow
N/A
Rear hitch
II
ASABE EP496 Engineering Matcher

Implement Draft & Ballast Matcher

Simulate draft resistance, drawbar power transfer, and optimal axle weight distribution for Case 1690.

Overloaded / Wheel Slip Alert(100%)
CAD DRAFT SCHEMATIC • Wide-Span Field Cultivator
SOIL: Medium Tilled LoamDEPTH: 4"SPEED: 7 MPH100% LOAD
SOIL SURFACE (0.0")SUB-SURFACE PLOW PAN (~14")100 HP◄ 4,172 LBS DRAFT4" DEPTH
DRAWBAR DEMAND: 77.9 HPWIDTH / SIZE: 24 ft Width
ASABE D497.7 Tillage Specific Resistance Formula
Implement Size (ft Width)24 ft Width
18 ft WidthDefault: 4270 ft Width
Tillage / Seeding Depth4 inches (10 cm)
2"Target: 4"6"
Target Operating Field Speed7.0 mph (11.3 km/h)
5 mphRated: 7 mph9 mph
Engine Power Demand vs Rated Output99.9 HP / 100 HP Rated
0%55% (Min Load)60-85% (Sweet Spot)100% (Cap)
Draft Force
4,172 lbs
Drawbar Power
77.9 HP
Target Slip
8% - 12%
Axle Ballast Balance (MFWD / Mechanical Front Assist )Calibrated for Wide-Span Field Cultivator (100 lbs/HP standard)
Target: 10,000 lbs
Front Axle: 38%Rear Axle: 62%
1,724 kg (3,800 lbs)2,812 kg (6,200 lbs)
Ballast Adjustment vs Base:+1,245 lbs (565 kg)
Hourly Diesel Burn
4.4 gal/h
16.7 L/hr (est. $17/h)
Hydraulic Fan Status
Standard Draw
No fan req

Engine demand (99.9 HP) exceeds rated power (100 HP). Reduce working speed by 1.0-1.5 mph or reduce working width.

Catalog archival serial-number ranges

4 production years
Production yearStarting serial #Ending serial #Assembly plant
1980#11,120,101#11,211,840Racine, Wisconsin, USA
1981#11,211,841#11,213,683Racine, Wisconsin, USA
1982#11,213,684#11,214,372Racine, Wisconsin, USA
1983#11,214,373End of runRacine, Wisconsin, USA

Instant Used Market Valuation Projector

Algorithmic resale estimate for Case 1690 (1980)

Full Appraisal Tool
Operating Meter Hours3,200 hrs
Mechanical & Physical Condition
Empirical model calibrated against dealer & auction lots
Estimated Fair Market Value
$4,482
Basis: 100 HP • 46 yrs old
Auction / Wholesale
$3,675 – $4,123
Dealer Retail Asking
$4,706 – $5,289
3-Year Projected Resale Curve~5% annual retention decay
Year 2027
$4,258
Year 2028
$4,045
Year 2029
$3,843

Direct Segment Rivals & Showdowns

Head-to-head match-ups calibrated by horsepower and era

Deutz-Fahr+15 HP
DX 6.30
115 HP
Fiat+15 HP
1180
115 HP

Looking for a used Case 1690?

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Case

USA • 137 Models

Founded in 1842 by Jerome Increase Case, the J. I. Case Threshing Machine Company emerged as a pioneering force in agricultural machinery during the 19th century. The company gained early prominence by manufacturing steam engines, including portable engines and traction engines, which were crucial for mechanizing agriculture and construction in the United States. Alongside its steam engine innovations, Case became a leading producer of threshing machines and harvesting equipment, establishing itself as a cornerstone of American agricultural mechanization. By the early 20th century, Case expanded into the tractor market, becoming one of the largest tractor manufacturers globally. The company's commitment to quality and innovation earned it a reputation for robust and reliable machinery, serving both agricultural and construction sectors. In the mid-20th century, Case shifted its primary focus to construction equipment while maintaining a strong presence in agriculture. A pivotal moment in its history occurred in the 1980s when Case was acquired by Tenneco, leading to the 1985 merger with International Harvester's agricultural equipment division. This merger resulted in the formation of Case IH, a powerhouse brand that combined the legacies of two iconic agricultural machinery manufacturers. The new entity continued to innovate, introducing advanced technologies and expanding its global footprint.

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