The Engine Rebuilder Issue 01 - Summer 2025 | Page 4

06 News
10 Products
16 Federation of Engine Re-Manufacturers
20 Iconic engine: Alfa Twin-Cam
36 New tech: Coryton bio and synthetic fuels
48 Dream workshop: Tolman
58 How do you solve a problem like... BMW VANOS
66 If you ain’ t cheating, you ain’ t trying... Volvo 850 BTCC

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06 News

The most important industry news, from hypercars to how the internal combustion engine is going to save the electric car

10 Products

Tools, adhesives and even tiny little engines to build on your dining table, here’ s what you’ ll want to spend your money on

16 Federation of Engine Re-Manufacturers

What happened at the Reman Expo at Fijntechniek Fijnaart and who’ s new to the federation

20 Iconic engine: Alfa Twin-Cam

Twin-Cam, Nord, Bialbero. Whatever you call it, we find out everything you need to know about Alfa Romeo’ s beautiful all-alloy four-cylinder

CONTENTS

36 New tech: Coryton bio and synthetic fuels

Can biofuel simply replace ordinary pump fuel in most cases? We find out if it’ s technically possible and viable

48 Dream workshop: Tolman

Warwickshire Restomod creator, Tolman, has gone through a lot of changes in the past few years. We visit its refreshed and rejigged facilities

58 How do you solve a problem like... BMW VANOS

BMW’ s variable valve system is effective and robust, but time hasn’ t been kind to every unit. We understand what goes wrong and how to fix it

66 If you ain’ t cheating, you ain’ t trying... Volvo 850 BTCC

Ingenious ways of bending the rules. For a lot of us, that’ s what racing is about and TWR’ s 850 is one of motorsport’ s best stories

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4 The Engine Rebuilder Issue 01