Supercharged MG MGB Roadster 5-Speed
This MG MGB began life as a 1966 MGB GT coupe, and it was acquired by the current owner in 2004 and subsequently fitted with the unibody of a 1978 roadster and further modified with Sebring-style bodywork. A supercharged 1.8-liter inline-four was installed along with a five-speed manual transmission and a limited-slip differential, and the chassis has been fitted with a lowered suspension and four-wheel disc brakes with Wilwood front calipers. The body is finished in yellow and has a black soft top, a louvered hood, fender flares, and triple windshield wipers. Other equipment includes black leather upholstery, 15” alloy wheels, a roll bar, a Moto-Lita steering wheel, burl wood trim, DJ Safety harnesses, and a JVC stereo. This modified MGB is now offered on dealer consignment with build records and photos, magazine articles featuring the car, and a California title listing the vehicle as a 1967 MG coupe.
Drivetrain and chassis components from a rusted MGB GT were transferred to a donor roadster body during the aforementioned build, which was conducted under current ownership by On The Road Again Classics of Morgan Hill, California. The car was stripped to bare metal, exterior trim was removed, and Sebring-style front and rear valances, front brake-cooling ducts, and fender flares were added before a repaint in yellow. Additional details include a black soft top, a louvered hood, an enlarged mesh grille, front bumperettes, triple windshield wipers, black side mirrors, red-lens taillights, and a single exhaust outlet. Paint chips and blemishes around the car can be viewed in the photo gallery below.
Eight-spoke 15” alloy wheels are mounted with 205/50 Falken Azenis tires. The suspension has been lowered and modified with negative front camber, a 7/8” front sway bar, fast road springs, and heavy-duty lever-arm shocks. Stopping power is provided by four-wheel disc brakes with Wilwood four-piston front calipers plus vented rotors up front and Cobra units out back.
The cabin is upholstered in black leather with red piping and is accented with burl wood trim on the dash, center console, and door panels. A roll bar has been added along with a Moto-Lita steering wheel, a JVC AM/FM/cassette stereo, red DJ Safety four-point harnesses, and MG-branded rubber floor mats. The seats have headrests, and HVAC outlets are positioned to the left of the glovebox. The wood on the driver-door armrest is cracked. A battery cutoff switch is located in the trunk.
Smiths white-dial instrumentation consists of a 170-mph speedometer, a 7k-rpm tachometer, and auxiliary gauges, while an Innovate Motorsports digital air/fuel mixture display has been added in the center stack. The five-digit odometer shows 10k miles, which is said to represent the distance added since completion of the build. Total chassis mileage is unknown.
The replacement 1.8-liter inline-four was reportedly overbored .040” and features a nitrided crankshaft, a lightened flywheel, a high-capacity oil sump, a custom camshaft, an aluminum cylinder head, Rimflo valves, roller rocker arms, hardened lifters, a finned valve cover, and Arias forged pistons with an 8.3:1 compression ratio. A supercharger has been added along with a PerTronix electronic ignition system, a cold-air intake, and a heavy-duty radiator with dual electric puller fans. The exhaust headers flow into a stainless-steel resonator, muffler, and finisher.
Power is sent to the rear wheels through a T9 five-speed manual transmission and an 8” Ford rear end with a limited-slip differential and 3.5:1 gearing.
Build photos and records are pictured in the gallery along with magazine articles featuring this vehicle.
The chassis plate shown above was installed by the current owner, and the number—GHD3L99429—is consistent with an MGB GT produced in 1966. The VIN listed on the California title bears a “67” prefix, and that document describes the car as a 1967 MGB GT coupe.
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