PRECISION ENGINEERING, NOT ONE-SIZE-FITS-ALL TUNING
Engine machining. A question of performance.
From faithful rebuilding to carefully matched performance upgrades, what matters is how displacement, cylinder head, valve train and the complete engine installation work together.
ENGINEERING WITH A PLAN
More than simply fitting a hotter camshaft.
The driving characteristics of classic VW EA827 engines can be changed in many ways. Maximum peak power is not always the objective. A free-running crankshaft assembly, carefully chosen compression ratio, improved ports and a well-matched valve train can make an engine more enjoyable in everyday use. More extensive builds are available for sporting applications. The right solution depends on the vehicle, fuel-injection system, intended use and desired engine character.
01
Initial assessment
Establish the engine code, vehicle, existing components and intended use.
02
Machining & assembly
Match the engine block, crankshaft assembly, cylinder head and valve train.
03
Calibration
Set cam timing accurately and account for the fuel system and complete engine installation.
ENGINE MACHINING · PERFORMANCE OPTIONS
A question of performance
These three build levels illustrate what is technically possible for eight- and 16-valve engines. The specification depends on the base engine, fuel system and intended use.
8V engines: camshaft, valve train and adjustable cam pulley
16V engines: camshafts, cam pulleys and valves
VARIANTE 1
Camshafts
The first step towards a sportier engine character.
8V: performance camshaft, e.g. 268°
16V: performance camshafts, e.g. 268°
Specification and scope individually agreed
VARIANTE 2
Cylinder head & valve train
Improving cylinder filling, willingness to rev and component compatibility.
Optimised inlet and exhaust ports
Performance camshaft(s) to suit the application
Lightweight hydraulic tappets
8V additionally: increased compression ratio
Specification and scope individually agreed
VARIANTE 3
Bespoke performance build
For more demanding engine concepts requiring extensive modifications.
Machined cylinder head and performance camshaft(s)
Adjustable cam pulleys
Forged pistons and H-beam connecting rods
Supertech valves and uprated valve springs
Accurate cam timing setup
Specification and scope individually agreed
THREE ENGINE CONCEPTS
From discreet classic to Group A competition engine.
EA827 · 1.8-LITRE EVO
A modern interpretation of the proven 1.8-litre engine
The EVO specification is not about chasing maximum engine speed. It prioritises smooth running, responsive acceleration and useful torque across the rev range, while retaining a largely original external appearance.
According to the catalogue, lighter pistons, fracture-split connecting rods, 6 mm valve stems with matched springs, lightweight hydraulic tappets and improved port geometry reduce moving mass by approximately 960 grams overall.
For hydraulic-tappet engines: PF, PB, 2H, EV, JH and RP. Individual specifications available on enquiry.
The photograph shows the base 1.8-litre engine; it has not been independently identified as an EVO build.
This build retains the external appearance of the original 1.8-litre engine. Internally, a VW 2.0-litre crankshaft and an 82.5 mm bore produce a displacement of 1,983 cm³.
Lighter, more recent component designs support smooth operation. The standard cylinder head may be retained, or a machined head with a suitable camshaft can be specified. This concept is particularly attractive for classics where the conversion should remain discreet from the outside.
Suitable for, among others, 2H, PF, DX, EV and JH. Individual specification on enquiry.
The 1.8-litre Group A engine is not an ordinary road engine. According to the catalogue, its specification includes a Schrick valve train with solid tappets, extensively machined cylinder head and matched intake and exhaust components.
Forged pistons, a precisely balanced crankshaft, selected connecting rods, a baffled sump and VWM crankcase ventilation complete the build.
Catalogue figures: approximately 190–205 PS and up to 8,500 rpm, depending on specification and installation. Extensive technical modifications to the vehicle are required.
A good engine build does not end at the cylinder head.
Especially with classic injection systems, the installation, correct settings and integration into the vehicle are decisive. The catalogue therefore also describes conversions including engine removal and refitting, transfer of ancillaries, initial setup and road testing. Such work is quoted individually.
Which specification suits your VW?
Tell us your engine code, vehicle, existing equipment and intended use so we can discuss an appropriate solution.
