Find your build's reference

Reference written by builders, for builders. Documented figures, not marketing claims. Cited across the Opel community for over a decade.

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18+
years covering the Opel platform
240+
reference articles in the archive
4+
core platforms - Ascona · Manta · Monza · GT
6+
countries citing the reference
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Three reference areas.One platform.

Fuel Injection & Engine Management
Fuel Injection & Engine Management

Cicco's Injection Conversion · Roller Lifters · Turbo Efficiency

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Suspension, Brakes & Chassis Geometry
Suspension, Brakes & Chassis Geometry

Opel GT Brake Upgrade · Monza Rear Geometry

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Drivetrain & Gearing
Drivetrain & Gearing

Torque-Tube Modification · Gearbox Ratios · Ascona Platform Reference

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Carb-to-Injection Conversions
Carb-to-Injection Conversions

Cicco's Injection Conversion · Bosch L-Jetronic wiring, sensors and fuelling notes

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Torque-Tube & Gearbox Reference
Torque-Tube & Gearbox Reference

Torque-Tube Modification · Gearbox Ratios · rear-axle geometry for RWD Opels

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Testimonials

The injection reference here is what I sent everyone in the club who wanted to ditch the carbs.

— Emily R., 43

Still the page I open first when I'm setting rear geometry.

— Liam D., 27

Linked these articles on our forum for years. Glad they're back.

— Maya K., 32

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