1.8L G60 Engine
Complete technical specifications from official VW repair manuals. The innovative G-Lader scroll-type supercharger delivers instant boost response without turbo lag - powering the iconic Corrado G60 and Golf Rallye.
G60 Engine Codes
SuperchargedPG
Primary production code for Corrado G60 and Golf GTI G60. SOHC 8-valve with G-Lader supercharger and air-to-air intercooler. Bosch Digifant fuel injection.
1H
Revised variant with improved Digifant calibration and intercooler refinements. Same 1,781cc displacement. Used in later Corrado G60 production.
3G
Ultra-rare 16-valve DOHC head variant. Only 71 units built by VW Motorsport for Golf Limited. Syncro AWD, 0-100 km/h in 6.4 seconds.
G-Lader Supercharger System
Scroll CompressorG-Lader Specifications
- TypeScroll (spiral) compressor
- Housing MaterialMagnesium alloy
- Inlet Diameter60 mm
- DriveTiming belt (1:1 ratio)
- Max Boost Pressure0.6 bar (8.7 psi)
- Peak Boost RPM~4,000 RPM
Intercooler System
- TypeAir-to-air
- LocationFront-mounted
- Bypass ValveYes (reduces parasitic loss)
- Charge Pipe MaterialAluminum
The G-Lader uses two intermeshing spiral scrolls to compress intake air - similar to a Roots blower but with smoother, spiral-shaped rotors for reduced pulsation. Driven directly from the crankshaft at 1:1 ratio, it provides instant boost response with no turbo lag. The bypass valve diverts excess air at idle to reduce parasitic losses and noise. Originally patented in 1905 by Léon Creux, VW refined the design for automotive use in the 1980s.
Engine Architecture
EA827 BasedEngine Configuration
- BlockCast iron (EA827)
- HeadAluminum alloy
- ValvetrainSOHC 8-valve
- Valves/Cylinder2 (1 int / 1 exh)
- LiftersHydraulic (no adjustment)
- Fuel SystemBosch Digifant MPI
Cylinder Head
- MaterialAluminum alloy (heat-treated)
- Combustion ChamberCrossflow design
- Compression Ratio8.0:1 (for boost)
- IgnitionDistributor w/ Hall sensor
- Firing Order1-3-4-2
Crankshaft Specifications
Rep. Gr. 13Crankshaft Dimensions
- TypeForged steel
- Main Bearings5
- Main Journal Diameter54.0 mm
- Rod Journal Diameter47.8 mm
- Axial Play (New)0.07-0.17 mm
- Axial Play (Limit)0.25 mm
- Thrust BearingBearing #3
Pistons & Rods
- Piston MaterialCast aluminum
- Compression Ratio8.0:1
- Pin Diameter20 mm
- Rod Length (C-to-C)144 mm
- Max Piston Speed~18 m/s @ 6,500 RPM
Oil System Specifications
LubricationEngine Oil
- System TypeWet sump
- Pump TypeGerotor
- Capacity with Filter4.0L (4.2 qt)
- Relief Pressure4.5-5.0 bar
- Recommended Grade10W-40 or 15W-40
G-Lader Lubrication
- Lubrication TypeSelf-lubricating apex strips
- Oil ServiceAnnual inspection
- Rebuild Interval~100,000 km
- Rebuild Cost€800-1,000
Despite initial claims of being "maintenance-free," the G-Lader requires regular attention. The supercharger's internal bearings and apex strips wear over time. Inspect annually and plan for a full rebuild at approximately 100,000 km. Oil contamination from internal leaks accelerates wear - address any leaks immediately. Many G60s have exceeded 300,000 km with diligent maintenance.
Torque Specifications
Official VW SpecsCylinder Head & Valvetrain
Crankshaft & Block
Supercharger & Timing
Cooling System
SpecificationsCoolant Specifications
- TypeG11 Blue
- Capacity5.5L (5.8 qt)
- Thermostat Opens87°C (189°F)
- Operating Temp85-105°C
Fuel System
- Injection TypeBosch Digifant MPI
- Fuel Pressure2.5 bar
- Fuel RequirementPremium (91+ AKI)
- Fuel Consumption9-11 L/100km
Tuning Potential
PerformanceChip & Pulley
Modifications
- ECU chip tune
- Smaller supercharger pulley
- Boost increase to 0.8 bar
- Larger injectors
Notes
- Stock G-Lader handles 0.8 bar
- Upgraded fuel pump recommended
- Watch intake temps
Rebuilt G-Lader
Modifications
- Ported/rebuilt G-Lader
- Larger intercooler
- 3" exhaust
- Standalone ECU
Notes
- G-Lader efficiency limit ~230 hp
- Specialists like Theibach offer rebuilds
- New reproduction units available
Turbo Conversion
Modifications
- Remove G-Lader, add turbo
- Custom manifold
- Standalone ECU
- Forged internals (300+ hp)
Notes
- Popular swap path
- 8.0:1 compression = boost friendly
- T3/T4 or GT28 common choices
The G60 powered the Golf Mk2 Rallye in Group A competition. While road cars made 160 PS, rally-spec engines were tuned to 250-280 PS. The low 8.0:1 compression ratio makes the G60 block excellent for forced induction builds - whether keeping the G-Lader or converting to turbo.
Common Issues & Maintenance
TroubleshootingKnown Problem Areas
- G-Lader BearingsWear at ~100,000 km
- Apex Strip WearReduces boost efficiency
- Timing BeltReplace every 60,000 km
- Oil ContaminationInternal G-Lader leaks
- Intercooler Clogging10-15% power loss
- DistributorHall sensor failure
Maintenance Intervals
- Oil Change5,000 mi
- Timing Belt60,000 km (37,000 mi)
- G-Lader InspectionAnnual
- G-Lader Rebuild100,000 km
- Spark Plugs30,000 mi
- CoolantEvery 5 years
The G60 is an interference engine. Timing belt failure causes catastrophic valve-to-piston contact. Replace belt, tensioner, and water pump every 60,000 km (37,000 miles). The timing belt also drives the G-Lader - failure affects both systems simultaneously.
Vehicle Applications
G60 Supercharged| Vehicle | Years | Code | Units Built | Notes |
|---|---|---|---|---|
| VW Corrado G60 | 1988-1992 | PG, 1H | ~25,000 | Primary G60 showcase, 0-100 in 8.3s |
| VW Golf Mk2 GTI G60 | 1990-1991 | PG | ~8,000 | Limited production hot hatch |
| VW Golf Mk2 Syncro G60 | 1989-1991 | PG | Limited | AWD variant |
| VW Golf Rallye | 1989 | PG | 5,000 | Group A homologation special |
| VW Golf Limited | 1991-1992 | 3G | 71 | 16V head, 210 PS, Syncro AWD |
| VW Passat B3 G60 Syncro | 1988-1993 | PG | ~200 | AWD wagon/sedan |
G60 vs G40 Comparison
G-Lader Family| Specification | G40 (Polo) | G60 (Corrado/Golf) |
|---|---|---|
| Displacement | 1,272cc | 1,781cc |
| Bore × Stroke | 75 × 72 mm | 81 × 86.4 mm |
| Power | 116 PS @ 6,000 | 160 PS @ 5,600 |
| Torque | 150 Nm @ 3,600 | 225 Nm @ 4,000 |
| G-Lader Inlet | 40 mm | 60 mm |
| Engine Code | PY | PG, 1H, 3G |
| Production | 1986-1994 | 1988-1993 |
| Top Speed | 196 km/h | 225 km/h |