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Weekend Special: 46 Works’ Alfa Romeo Alfetta

Weekend Special: 46 Works’ Alfa Romeo Alfetta

If you’re not spending your weekend zipping around the Japanese countryside in an Italian coupé, you’re doing it wrong. Shiro Nakajima has the right idea: his superbly tweaked 76 Alfa Romeo Alfetta 1.8GT is just the weekend whip we’ve been looking for.

Nakajima-san is a master car and motorcycle builder, operating as 46Works from a charming old building, nestled in the foothills of the Yatsugatake Mountains. The Alfetta is his track car and Sunday morning B-road hero—and it’s loaded with tasty upgrades.
46 Works' Alfa Romeo Alfetta 1.8GT

“I’ve owned four Alfa Romeos,” Shiro tells us. “A 2000 GTV, 2000 Berlina, Giulia Super race car with a 2000cc engine, and a Giulia Super 1300, which I still own.”

“These Giulia Series cars are very fun, but the stability at high-speed of the Alfetta is better than the Giula series. But, under the influence of the transaxle, the response is bad. It becomes an excellent car when I improve it with some customisation.”
46Works

Shiro found the Alfetta at a friend’s Alfa shop in mostly stock condition. He then tore into it several times over a period of two years, gradually transforming it into the charming little canyon carver you see here.

There’s a full list of mods lower down, but we’ll run through the highlights—starting with one that’ll have Alfa tifosi clutching their chests. Under the hood, Shiro’s installed a full set of 41mm FCR motorcycle carbs, hooked up to a custom intake manifold. “Of course, I largely changed the settings,” he quips.
46 Works' Alfa Romeo Alfetta 1.8GT

The soundtrack’s provided by a hand-made, four-into-one titanium exhaust system. Naturally, Shiro’s also swapped the engine for a 2000cc mill with high-comp pistons, with further upgrades like a Bacci short-ratio final drive.

“The FCR carburettor is a more modern carburettor—so it’s efficient, and pushes up the engine power,” he explains. “You can get a very stimulating ride when you combine it with a good exhaust.”
46 Works' Alfa Romeo Alfetta 1.8GT

The Alfetta’s chassis hasn’t gone neglected, with Shiro taking great care to improve its handling. There are new shocks at both ends, with an upgraded torsion bar and anti-roll bar up front. “It’s now easier to drive, fast, and the response is very good,” he says.

The little Alfa’s also sporting new wheels and tyres, a new interior with a roll cage, and a fair amount of transmission and other ‘under the hood’ mods. It’s all wrapped up in a simple—yet sublime—blue and white livery.
46 Works' Alfa Romeo Alfetta 1.8GT

“Old sports cars are often painted in the sponsor colours of their race versions at the time,” says Shiro. “However, I liked this one’s original colour—so I aimed for something classic, refined, individual and sporty.”

So the dark blue you see is the Alfetta’s original paint, with white graphics laid over it, and a white nose sprayed by frequent 46Works collaborator, Stupid Crown.
46 Works' Alfa Romeo Alfetta 1.8GT

As expected, Shiro’s now well and truly smitten with the mighty little Alfetta. “I initially chose the cheaper Alfetta as a base, because it might crash in a race. But now that I’ve poured so much love into it, I don’t want to crash it!”

Who else can relate?
46 Works' Alfa Romeo Alfetta 1.8GT

46Works 1976 Alfa Romeo Alfetta 1.8GT

Engine
Swap to 2000cc engine
High compression (approx 10.4:1) piston and liner
41mm FCR carburetor, tuned (specced for 1000cc motorcycle)
One-off intake manifold
Electromagnetic fuel pump with regulator
One-off hand-bent titanium four-into-one exhaust manifold
One-off titanium side muffler
One-off aluminium oil catch tank
One-off aluminium radiator reservoir tank
123 ignition

Transmission
Swap to 75 transmission
Modified 75 LSD
Lightweight flywheel and metal clutch
Bacci short-ratio final drive

Front Suspension
30mm torsion Bar
27mm anti-roll bar
BILS front shock for Toyota AE86
Modified shock mount

Rear Suspension
6kgf/mm spring
One-off height adjuster
Shock for Toyota AE86

Wheels and tyres
Rays TE37 Wheels
Yokohama Advan A050 tyres

Interior
MoMo Corse dry-carbon bucket seat
Sparco steering wheel
Roll cage
Stack tacho

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Images by Sven Wedemeyer / (WHEELS OF STIL), reproduced with permission from Craftrad.

Shiro Nakajima of 46Works