Highlights

V6 Busso engine rebuilt to race tune by Brunswick Motorsport in 2024
Resprayed to good standard in 2024
Prepared for racing in the ARCA championship series
Upgraded for the Classic Touring Car Racing championship
Road-legal race car with MOT to August 2025 with no advisories
Three sets of wheels and tyres and many spares included

The Appeal

The 75 is, for many, the last ‘proper’ Alfa Romeo. Rear wheel drive and a transaxle layout to deliver near-perfect weight balance, it is no wonder that the firm’s race team, Alfa Corse, chose it to spearhead a return to track-based glory.

It didn’t quite work out, but that was more due to Alfa-esque mismanagement than the car’s inherent abilities. It was quick and performed well. No surprise then, that many enthusiasts have turned stock 75s into track weapons.

Here is one, a carefully evolved 1990 75 built to compete in the ARCA and CTCR championships. Featuring a Busso 3L V6 fully rebuilt and tuned by Brunswick Motorsport in 2024 - they also rebuilt the transaxle - and Chris Snowdon racing suspension, this is a seriously sporting and competitive 75. The interior has been stripped and lightened interior with roll cage to Motorsport UK specification.

The car’s party trick is that it remains road legal - it even has an advisory-free MOT to August 2025 - so could be competed or simpy enjoyed on the road. With its recently resprayed bodywork it looks the part however you choose to use it.

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History and Paperwork

First registered 5th September 1990
Originally built as a Twin Spark 2L factory car
Correctly registered with DVLA as a 3L car
10 registered keepers
Current keeper since July 2013
Acquired by current keeper already prepared for ARCA championship series
Converted from as-manufactured state in the early 1990s, maintained road legal
Dry garaged throughout current keeper;s tenure
Progressively upgraded since 2013 for the Classic Touring Car Racing championship
Chris Snowdon Racing race specificaiton suspension
Engine, transmission, and braking upgrades by Brunswick Motorsport in 2024
Safety systems installed and updated to comply with Motorsport UK regulations
No service book exists, but all principal invoices are retained
MOT valid until August 2025 with no advisories
Supplied with a large quantity of spare wheels
Three sets of wheels and tyres included for all racing conditions

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The Condition

Resprayed in 2024 with paintwork in very good order sporting racing decals and yellow bonnet stripe
Structural shell is sound and straight due to being dry garaged since 2013 and raced cautiously
Some superficial light rust on the underside, but no structural corrosion according to seller
Seller advises small patch of corrosion on the rear quarter under arch trim
We are told that the car has never been crashed during racing so is structurally sound
Bodyshell reinforced with a welded-in roll cage, including main and A-pillar hoops, diagonal bracing, and door bars
Original side and rear glass windows replaced with 4mm polycarbonate lightweight race windows
All interior trim and redundant electrical equipment removed
Presents as a bare, painted shell with the dashboard and original instrumentation retained
Supplementary gauges and switches fitted for race use
Driver's seat is MSUK/FIA specification, rigidly fixed with a six-point race harness
Includes a race seat and four-point harness for instructor/passenger use
Lightweight, leak-proof race battery fitted in the left rear footwell
Fire extinguisher bottle fixed in the front left footwell
High capacity starter battery fitted in the original underbonnet position, quickly removable for racing
Supplementary instruments and switches, along with internal controls for fire extinguisher and master circuit breaker, are on a drop panel replacing redundant heater controls
Original Alfa Rosso red refreshed with a full respray in spring 2024, with a yellow flash added across the nose
Offered with three sets of wheels and tyres for various conditions and uses
Very stable under race conditions, but hard ride and interior noise levels less ideal on the road according to seller
No structural advisories on last MOT

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The Mechanics

Fitted with 2,959cc 12V ‘Busso’ V6 rebuilt, balanced and tuned by Brunswick Motorsport in 2024
5spd manual gearbox with lower rations for short circuit racing
Engine modified to race tune, producing 220bhp
Engine specification summarised below
Standard ECU replaced with an "Emerald" programmable unit, disc provided
Aftermarket oil cooler fitted
Silicon coolant hoses
Exhaust fitted with silencers for road use with recent noise test recorded 88dB static
Engine has competed in two race meetings since rebuild, performing faultlessly
Transaxle stripped, inspected, and rebuilt by Brunswick during engine rebuild
Larger front brakes with 4-piston calipers and 300mm diameter rotors replace original
CL pads fitted for racing
Fuel system upgraded as summarised below
Near 50/50 front to rear weight balance achieved by rear-positioned transaxle unit
De-Dion rear axle
Rear brakes positioned inboard to reduce unsprung weight
Independent front suspension with torsion bars and hydraulic dampers
No reported running or driving issues
No mechanical or running gear advisories on last MOT

Engine specification following 2024 rebuild:

Gas-flowed and ported cylinder heads
Colombo and Bariani mild race cams
11:1 compression ratio
Enlarged inlet runners
Stainless steel tubular exhaust manifolds
Free-flow air filter
Standard throttle body injectors and plenum box to comply with championship regulations

Fuel system:

30-litre foam-filled alloy race tank
1.5-litre surge tank
Low and high-pressure fuel pumps
Metal fuel lines with stainless steel braided flexible sections

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BEFORE YOU BUY

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