{"id":51723,"date":"2026-06-26T08:54:07","date_gmt":"2026-06-26T06:54:07","guid":{"rendered":"https:\/\/www.italpassion.fr\/?p=51723"},"modified":"2026-06-25T13:19:15","modified_gmt":"2026-06-25T11:19:15","slug":"this-alfa-romeo-4c-is-leading-the-championship-with-its-1-75l-engine-which-is-turbocharged-to-nearly-600-ch","status":"publish","type":"post","link":"https:\/\/www.italpassion.fr\/en\/alfa-romeo\/cette-alfa-romeo-4c-est-en-tete-du-championnat-avec-son-moteur-1-75l-booste-a-pres-de-600-ch\/","title":{"rendered":"This Alfa Romeo 4C leads the championship with its 1.75L engine boosted to nearly 600 ch"},"content":{"rendered":"
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Class Leader Modified<\/em>, Jack Berry raced for several seasons in an Alfa Romeo Mito equipped with the 4C's engine, tuned to over 400 CV, including We'd already talked about it here<\/a>. But since the end of the 2025 season, the British manufacturer has had a new, even more spectacular weapon at its disposal. If they\u2019re going to use a 4C engine, they might as well have the chassis and body of the Milanese sports car too!<\/p>\n\n\n\n

The blue No. 87 Alfa Romeo 4C was developed by Alfa Workshop, a highly regarded tuning firm in England that has worked on numerous race cars competing in the HITEK Alfa Romeo & Italian Intermarque Championship. This Alfa Romeo 4C<\/a>, driven by Jack Berry, is one of the most extreme modifications ever made to a 4C.<\/p>\n\n\n\n

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GT3 Look<\/h2>\n\n\n\n

Visually, it\u2019s almost on par with the spectacular 4C hill-climb cars. And you can\u2019t help but wish that\u2026\u2019Alfa Romeo<\/a> hasn't developed a GT4 or even a GT3 version of its agile, lightweight sports car.<\/p>\n\n\n\n

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The 4C\u2019s aerodynamics and bodywork have been enhanced with numerous redesigned components: the front end features a large front splitter to increase downforce, optimized air intakes, improved cooling, and specific racing components. The diffuser and rear wing have also been modified. The overall look is less radical than the version prepared by Revs Italia, but the result is still spectacular. The kit varies depending on the track, with a splitter that is more or less prominent based on the track layout.<\/p>\n\n\n\n

A 1750 TBI engine pushed to its limits!<\/h2>\n\n\n\n

Now we get to the heart of the matter: the mechanical components are still based on the Alfa Romeo 1750 TBi engine, but have been extensively modified. The exact specifications are not well known, but the modification appears to involve increasing the displacement to 1.95 \/ 2.0 liters. The engine uses a high-capacity racing turbocharger as well as a completely redesigned engine management system. The photographs show several typical modifications: additional hoses, an optimized cooling system, quick access to the expansion tank, and enhanced thermal management. The engine compartment remains surprisingly compact despite the high power output.<\/p>\n\n\n\n

During its most recent dyno run, Alfa Workshop reported a power output of approximately 580 ch! An impressive result for a 4C\u2014more than double the stock output of 240 ch. The car seems much more like a competition GT built around a 4C carbon-fiber monocoque than a simple production-based modification. The C635 TCT transmission appears to have been retained but reinforced to handle torque likely ranging between 700 and 800 Nm.<\/p>\n\n\n\n

Formidable rolling stock<\/h2>\n\n\n\n

The photographs show a Nitron competition suspension system with threaded shock absorbers, Uniball ball joints, and fully adjustable geometry. The front suspension appears to have been extensively modified with a custom subframe. The visible steering rack is mounted differently from the original.<\/p>\n\n\n\n

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The goal is to reduce bump steer (the \u00abchange in toe angle\u00bb that occurs when the wheels steer on their own over a bump, without any input from the driver or the steering wheel), improve precision, and optimize the front-end kinematics. A dedicated front anti-roll bar is clearly visible, mounted on specialized bushings and interchangeable depending on the track to fine-tune the settings.<\/p>\n\n\n\n

Currently in first place in the 2026 championship<\/h2>\n\n\n\n

Jack Berry has taken the lead in the championship, with several pole positions and class victories under his belt; the car has proven to be extremely competitive on British circuits. With approximately 580 ch and a weight of around one metric ton, this Alfa Workshop 4C is likely one of the highest-performing Alfa Romeo race cars currently in action.<\/p>\n\n\n\n

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A post shared by Alfa Workshop (@alfaworkshop)<\/a><\/p><\/div><\/blockquote>\n