Ed Theobald
BritishRaceCar.com
Year and model of car
1972 MGB GT / Town/city and state
Surrey, British Columbia, Canada
Who built or modified this car?
Ed Theobald / E-mail address and phone
604-538-0120
Engine (make, model, configuration, displacement, etc.)
2001 Mazda Miata 1.8 litre / Engine electrical (including ignition)
Miata. Fully equipped with OBD II and all emissions control components
Intake (heads, manifold, carburetor or fuel-injection specifics)
Stock Mazda EFI / Camshaft and valvetrain
Stock Miata
Cooling and lubrication systems
1965 Mustang 6cyl aftermarket rad / Exhaust system
Miata header, small body cat, resonator and Flowmaster muffler
Transmission (type, make/model, ratio of top gear, etc.)
2001 Miata 5 speed / Clutch System / driveshaft
Stock Miata clutch, modified Miata/MGB driveshaft
Rear axle (make/model, ratio, limited-slip?)
Stock MGB 3.9:1 / Brakes (master, front, and rear)
Green stuff pads with Brembo (non-vented) rotors
Stock MGB drum rear brakes
Front suspension / steering
Stock MGB with 1” lowered springs / Rear suspension
1”drop leaves
Tubular shock conversion using Monroe gas-adjust
Wheels/Tires
Chinese Minilite replicas 15X7
Nexen CP 641 195-65X15 / Weight
Estimated 960 kg (2100 lb)
Instruments
All original Smiths with added matching Oil pressure and Volts / Electrical (battery, charging, lighting, audio, etc.)
Modified Miata harness with Sony sound
Date completed / Miles (or races) driven since completion
Completed April 2010 / (racecars only) What class does this car compete in?
Other chassis modifications
Engine mounts to accommodate Miata engine
Other body and interior modifications
Removed side trim, marker lights, stock reverse lamps, bumper overriders.
Added Chev Aveo side turn signal lights, Yamaha sport bike fuel filler, Mazda 5 antenna
Performance data
155 hp stock with variable valve timing, slightly more with the modified intake and exhaust
Other important info (unusual features / historical notes / comments / tips / problems encountered during or after completion)
The 2001 Miata is equipped with an immobilizer system and, after months of trying to by-pass it, I ended up incorporating the entire immobilizer system from a Miata (all from the same donor car) into my modified wiring harness.
This is my third MG/Miata conversion and the immobilizer issue was far and away the most difficult problem I have encountered. The previous two projects used 1996 and 1997 engines with their wiring harnesses.
Note: Please send us as many photos as you can. Additional info is welcome! Questions? Call Curtis at 720.652.0237