It was however very thrifty; it's 52 liter tank giving no less than 550km range around town equivalent to 8.5L / 100km - this was an engine which was very ill however. I soon moved to replace the engine with a new unit, and found for $250 a 2 liter engine from a "Rodeo" (Holden / Isuzu). The engine is a bolt for bolt replacement for the original, and after a minor rebuild was fitted to the car. The standard Nikki carburettor and inlet manifold, as well as exhaust are still in use and with a little fine tuning, the 2 liter powered Gemini is extremely fast and tractable. It has bags of torque in a lightweight and rigid chassis.
The car's already good handling has been improved marginally with the replacement of the original shock absorbers and springs, with new aftermarket components, as well as the placement of a larger (24mm) front sway bar. Wider (and taller 14") rims from an E30 BMW 3 series are fitted to the car to improve the car's surefootedness at speed and in the wet.
Currently the fuel economy is a little worse than that of the 1600cc engine at 9.5 liters / 100km, however no compensation has been made for the use of taller 14" rims to this figure. A correction in the order of 7% may be made to compensate for the innacuracy in the cars' odometer due to this.
Even so; on the highway the car will attain 7.5 Liters / 100km.
The performance of the engine is nothing short of amazing considering it's vintage, and the combination of high levels of adhesion to the road, predictable handling, good brakes and powerful engine make it an extremely rewarding little car to drive. Good tyres are the only thing able to keep down the wheelspin in the wet, even in the higher (3rd & 4th) gears.
More than anything, this car is the type of car that will take a fair bit of abuse or neglect and still lose none of it's luster. The engine is extremely reliable and the gearbox is just as strong. Nothing is unbreakable though; and in this respect, I personally ensure that oil changes are done every 8000km for the engine, 30,000km for the gearbox and differential. Coolant and brake fluid is flushed and replaced on an annual basis.
Originality is possibly an issue to any owner, however my example is wholly Isuzu (the original builder of the Gemini and it's various powerplants).