Table of Contents
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1970 Sportster
- Vehicle Identification Number (VIN) is stamped on the right side of the engine crankcase and on the frame steering head. In addition to these numbers, an identification label is located on the frame giving the VIN and date of manufacture. This label was required by law for identification.1)
- 4A13675H0 is a 1970 XLCH.
- The serial number is the 3rd through the 7th digit. All serial numbers run consecutively regardless of model year. 2)
Model Code | Model Number | Serial Number | Manufacturer ID | Model Year |
XLH | 3A | 10,000 and up (5 digits) | H (for Harley Davidson) | 0 (1970) |
XLCH | 4A | 10,000 and up (5 digits) | H (for Harley Davidson) | 0 (1970) |
XR-750 | 1C | 10,000 and up (5 digits) | H (for Harley Davidson) | 0 (1970) |
XLRTT | 9B | 10,000 and up (5 digits) | H (for Harley Davidson) | 0 (1970) |
Engine- 883
- Engine type: Air Cooled, Overhead Valve, V-twin 3)Iron Head
- Displacement: 54 ci / 883 cc
- Hemi-spherical style heads
- Bore: 3 in / 7.62 cm 4)
- Stroke: 3.8125 in / 9.68 cm 5)
- Piston Displacement: 53.9 cu. in. / 883 cc 6)
- 90 Degree Valve Angle
- Compression: 9.0:1 7)
- Horsepower: 58 @ 6800 rpm 8)
- Torque: 52 ft-lb / 2.191 Nm @ 3800 rpm 9)
- Fuel System: Tillotson Carburetor 10)
- Carburetor Main Jets:
- Carburetor Slow Jet:
- Engine Idle Slow Speed:
- Engine speed for setting ignition timing:
- Fuel Tank Capacity:
- Oil Tank Capacity w/Filter:
Capacities
Dimensions
XL, XLH | XLCH | |
---|---|---|
Wheelbase | 58 1/2 in / 148.59 cm | 58 1/2 in / 148.59 cm |
Overall Length | 87 1/4 in / 221.61 cm | 87 1/4 in / 221.61 cm |
Overall Width | 33 in / 83.82 cm | 33 in / 83.82 cm |
Overall Height | 40 1/2 in / 103 cm | 42 in / 106.7 cm |
Road Clearance | 6 3/4 in / 17.145 cm | 6 1/2 in / 16.51 cm |
Drivetrain
- Constant Mesh - Foot shift
- Speeds - 4 Forward
- Number of Sprocket Teeth
- Engine: 34
- Clutch: 59
- Transmission: 20 (XLCH 19)
- Rear Wheel: 51
- Gear Ratios (XL,XLH)
- 1st: 11.16 to 1
- 2nd: 8.08 to 1
- 3rd: 6.11 to 1
- 4th: 4.42 to 1
- Gear Ratios (XLCH)
- 1st: 11.74:1
- 2nd: 8.50:1
- 3rd: 6.43:1
- 4th: 4.66:1
Tires
Goodyear | Yokohama | |
---|---|---|
Front | MM90-19 (3.75×19) Sport Rib | Y-980 (3.75x19T) High Speed |
Rear | 4.25×18 All Traction | Y-622 (4.25x18T) High Speed |
- Tire pressure
- Front: 24 psi / 1.655 bar
- Rear: 30 psi / 2.068 bar
Tire pressure based on 150 lb rider. When weight is exceeded by 50 lbs or more, increase the rear by 2 lbs and front by 1 lb. Repeat for each additional 50 lbs of weight. 16)
Models
XLH 883
What is the Current KBB Value? 17)
XLCH 883
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Harley-Davidson 1970 - 1977 Service Manual
10)
1970-2010 Haynes Sportster Service and Repair Manual