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Norena 75
Cyllinder Head Workshop

Precision repair of the special parts of your automobile

Repair and tuning of cylinder heads, diesel injectors, and DPF filters with engineering precision.

+359 888 999 777Send enquiry
Automotive cylinder head positioned on a machining bench in a workshop
years of experience
20+years of experience
service lines
4service lines
only SUPERFLOW flowbench in Bulgaria
1only SUPERFLOW flowbench in Bulgaria
What we do

Four service lines, one standard of precision

Metal-part machining with engineering precision — from diagnostics to final machining and adjustment.

Aluminium cylinder head on a resurfacing machine in a workshop01 / 04

Cylinder head repair

Diagnostics, resurfacing and machining with engineering precision

Full cylinder head repair — crack testing, welding, deck resurfacing, seat, valve and guide machining, assembly and adjustment.

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Diesel common rail fuel injector on a test bench02 / 04

Diesel injector repair

Testing and repair of common rail injectors on a modern bench

Testing diesel injectors on a bench, ultrasonic cleaning, mandatory replacement of teflon rings and seals, adjustment. We also stock tested and serviced injectors with a report.

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Diesel particulate DPF filter with a ceramic honeycomb, prepared for cleaning03 / 04

DPF filter cleaning

Professional DPF Cleaning & Restoration

We professionally clean diesel particulate filters (DPF) using specialized machine technology, restoring proper airflow, performance, and functionality. A safer and more cost-effective alternative to DPF removal.

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Industrial PEG machine for cylinder head machining04 / 04

Machine & consumable supply

Official PEG (Rossi & Kramer) distribution for the Balkans

Distribution of machines for machining and testing cylinder heads, valves and more from the Italian manufacturer Rossi & Kramer under the PEG brand.

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Why Norena 75

Experience, equipment and people you can rely on

  • Over 20 years of experience

    Founded in 2003, with a team that has been with us from the start and continuously adopts new technologies and processes.

  • Engineering precision

    The only SUPERFLOW airflow bench in Bulgaria provides accurate digital data for tuning the head and block.

  • PEG partnership

    Official distributor of the Italian manufacturer Rossi & Kramer (PEG) machines for the Bulgarian and Balkan market.

  • Full-cycle service

    From diagnostics through welding, resurfacing and seat machining to assembly and adjustment — all in one place.

Interior of the Norena 75 specialist workshop with head machining equipment

Need diagnostics or a repair?

Get in touch for a consultation. We will inspect your part and recommend the best solution.

+359 888 999 777Send enquiry