Topics
Background
Some specifications may apply only to Moto Guzzi California models. Also refer to federal safety requirements.
Cyclecar dimensions
The cyclecar is a small vehicle; it is about 5 feet shorter than a standard sedan (like a Toyota Camry) and over a foot narrower. All measurements in millimeters.
| Length | 3360 |
| Track | 1305 |
| Width (hubcap-to-hubcap) | 1465 |
| Height* (ground to scuttle top) | 895 |
* Height does not include windscreen
Brake rotors
| Location | Diameter | Thickness |
|---|---|---|
| Front | 300mm | 4.1 to 3.9mm (minimum wear limit) |
| Rear | 270mm | 5.1 to 4.9mm (minimum wear limit) |
Tightening torque
All values in Newton meters (Nm). To convert to Inch pounds, multiply by 8.856; for Pounds feet multiply by 0.738.
| Fastener application | Torque |
|---|---|
| M4 screws, nuts | 3 – 3.5 |
| M5 screws, nuts | 6 – 7 |
| M6 screws, nuts | 8 – 12 |
| M8 screws, nuts | 25 – 30 |
| M10 screws, nuts | 45 – 50 |
| M12 screws, nuts | 75 – 85 |
| Nut locking alternator (M16x1.5) | 75 – 80 |
| Screws and stud bolts fixing head to crankcase | 40 – 42 |
| Spark plugs | 25 – 30 |
| Hollow screw fixing the oil vapor recovery pipe | 38 – 40 |
| Screw fixing the rocker pins | 6 – 8 |
| Self-locking nuts for screws fixing the rod bearing caps | 46 – 48 |
| Flywheel to crankshaft fixing screw | 25 – 30 |
| Gear to camshaft fixing nut | 140 – 150 |
| Intake pipe fixing screws | 5 – 8 |
| Hollow screw fixing pipes that deliver oil to the heads | 15 – 18 |
| Nut for front and rear engine tie rod to chassis | 75 – 80 |
| Secondary shaft locking nut | 55 – 60 |
| Oil introduction cap in the gearbox | 25 – 30 |
| Oil level and drainage cap in the gearbox | 22 – 25 |
| Safety nut for secondary shaft | 70 – 80 |
| Nut locking bearing on bevel pinion | 180 – 200 |
| Screw fixing sprocket to drilled pin | 25 – 30 |
| Screws fastening cradle to frame | 70 – 80 |
| Nuts for screws fixing cradle to frame | 70 – 80 |
| Blind nuts for swing arm support pins | 70 – 80 |
| Nuts fixing gear case to the swing arm | 25 – 30 |
| Nut for front and rear wheel axle | 140 – 150 |
| Steering lock bushing | 170 – 180 |
Valve clearance
Applies to both left and right cylinders.
| Location | Clearance |
|---|---|
| Exhaust | 0.006″ |
| Intake | 0.004″ |
Measure from top dead center (TDC) compression cycle based on flywheel “D” or “S” marks viewed through inspection hole.
Oil capacity and viscosity
| Application | Capacity | Viscosity |
|---|---|---|
| Engine (sump) | 3.0 liters max, about 2.5 liters to halfway mark on dipstick | 10W/60 or 20W/50 |
| Gearbox | 0.75 liter | 80W/90 GL5 |
| Bevel gear (transmission) | 0.25 liter | 80W/90 GL4 |
| Reversing gearbox | 0.12 liter | 5W/40 |
The main difference between GL4 and GL5 gear oils is the amount of EP additives, typically sulphur and phosphorus, that reduce high temperature micro-welds on the gear flanks. GL5 has about twice the EP additives versus GL4 and is often recommended for rear axle (differential, transmission, or bevel gear) applications.
There is considerable confusion regarding oil and filter change intervals. Back in 1993, Guzzi recommended changing oil every 3,000 miles and changing the filter every third oil change, or every 9,000 miles. More recently, Guzzi has recommended changing the oil and filter every 6,000 miles. This may be a marketing response to the mess of swapping a filter housed inside the oil pan.
The reversing gearbox is placed between the engine’s gearbox and the swing arm drive shaft.
Electrical
Battery
Battery size 038 measures 245 x 135 x 200mm high with a 36 Ah capacity
Wire amp/distance carrying capacity
The following table displays distance carrying capacity in amps of various wire gauges (AWG). Distance is in feet.
| AWG | 5 Amps | 10 Amps | 15 Amps | 20 Amps | 25 Amps | 30 Amps |
|---|---|---|---|---|---|---|
| 20 | 4.5 | 2.2 | 1.6 | |||
| 18 | 7.3 | 3.7 | 2.4 | 1.8 | ||
| 16 | 11.5 | 5.8 | 3.8 | 2.9 | 2.3 | 1.9 |
| 14 | 18.4 | 9.2 | 6.1 | 4.6 | 3.7 | 3.1 |
| 12 | 29.4 | 14.7 | 9.8 | 7.4 | 5.9 | 4.9 |
| 10 | 46.8 | 23.4 | 15.6 | 11.7 | 9.4 | 7.8 |
| 8 | 74.4 | 37.2 | 24.8 | 18.6 | 14.9 | 12.4 |
The Ducati alternator is rated at 350 watts — a maximum output of approximately 30 amps — so peak current load is limited to battery, starter motor, alternator, voltage regulator, and fuse panel connections. Furthermore, leads from the alternator to the voltage regulator are split, so each wire has a reduced peak load of 15 amps instead of the full 30 amps.
