Twin-turbo was a relatively standard part of racing cars in the 90s.
The twin turbo kit for c4 corvette was introduced to the top of Chevrolet’s career about 34 years ago by the Transportation Research Center.
Although there are so many amazing turbochargers with horsepower beyond imagination, the c4 corvette turbo is still considered a significant achievement in the automotive industry.
So what is Twin Turbo TT? What breakthroughs and limitations does it have? And what notes for car owners when owning a 1988 Corvette Callaway twin turbo? Let’s find out!
What Is a Twin Turbo?
Twin-turbo is one of the famous car engine turbochargers today, also known as Parallel turbo – parallel twin turbochargers.
This term refers to an engine bay with two turbochargers (also known as twin turbochargers) of the same size, placed in parallel and responsible for compressing the intake air into the engine.
The Twin turbo TT is arranged under the hood. At that time, both engine branches are equally divided in emissions.
Twin turbochargers are typically installed in V-6 or V-8 vehicle engines, with each turbo taking charge of 3 or 4 cylinders.
Parallel twin turbochargers are used on many high-end and modern vehicles.
This layout aims to reduce the number of pipes required for the intake and exhaust systems, increase efficiency and reduce turbo lag.
Overview Of a Twin Turbo Kit For c4 Corvette
Twin-turbo c4 Corvette kit is an engine turbocharger created and released by Reeves Callaway.
Since the launch of the c4 turbo kit, it has marked a considerable step forward in the world auto industry. It was also the premise of many modern Chevrolet engine compartments.
Origin of
Callaway Cars turned the c4 corvette into a giant 34 years ago. A model with a power of over 500 hp has become too familiar.
Many people will not be surprised if a specific car model exceeds the 1,000 hp mark. However, if you go back more than 30 years, things are very different.
In the late 80s of the last century, the appearance of the Corvette C4 made many people admire it.
The original engine on the Corvette C4 was a 5.7L V8 with 230 hp. Unlike previous generations, Corvette C4 uses a monolithic frame (Unibody), which makes improving the car’s braking and steering tricky.
Fortunately for Chevrolet, however, they made the right choice when the Callaway Cars team overcame the difficulties and significantly enhanced the power of the 1988 Callaway twin-turbo Corvette.
Take a Big Step Forward With a Twin-Turbo Kit For C4 Corvette
The first change is to reconfigure the L98 block with the appearance of the c4 Corvette turbo kit system. Besides, the certainty of the engine block is also significantly improved.
Specifically, the 4-bolt tightening force of the crankcase cover has been changed to match the new crankshaft made from forged steel.
Valve springs have also been altered to withstand more significant pressure. It comes with the central Corvette turbo system as an oil and water cooling system.
A dual-intake air cooling system is also fitted to ensure the vehicle’s performance. And as a result, from 230 hp, the power curve of the Corvette C4 increases to 345 hp and 630 Nm of Ft Of Torque.
But that alone is not enough; maybe the Sledgehammer version was born. And as a result, from 230 hp, the power of the Corvette C4 increases to 345 hp and 630 Nm of torque output.
Advantages and Disadvantages of Twin Turbo Kit For C4 Corvette
Advantage: Turbo c4 corvette will improve the engine’s performance, helping to save maximum fuel during use.
Disadvantage: Because the Corvette Stingray twin turbo is installed in Parallel and has a more straightforward design than the Bi-turbo, it handles fewer emissions, and the engine rpm is limited.
In addition, the cost of using a twin-turbo c4 corvette is high because the pistons and crankshaft must be more vital to meet the requirements and specifications.
Finally, the structure of this twin turbocharger is more complicated than that of the Single Turbo, so a more extensive oil pump system is required to maintain continuous operation.
Common Faults in Engine Twin Turbo Kit For C4 Corvette
After experiencing it, I found common problems you can meet with engine twin turbo kits for your C4 Corvette. The details are:
Twin Turbo Is Leaking Oil
The twin-turbo system needs to be lubricated and cooled like the engine. Thus, a plan will direct oil from the engine to the turbo.
After many years of work, the gaskets can wear out this oil transmission system and degrade, leading to leaks.
As a result, the twin-turbo leaks oil, lacks oil, and even runs out of oil. The telltale sign is usually that the turbo makes a noise, the engine is noisier than usual, and it is not as smooth as before.
Compressed Air Duct Problem
The compressed air system from the turbo corvette c4 to the engine combustion chamber is usually made of plastic, rubber, or alloy on some high-end cars.
The pipe end has a sealing ring and a tightening belt to prevent leakage.
However, the pipe can be degraded after many years, and the gasket is open, causing compressed air to leak.
At this time, the air intake from the turbo into the engine will not be as much as before, making the engine weaker.
Twin-Turbo Ball Worn
Working long hours in extreme conditions will cause the twin-turbo ball to wear. This reduces the performance of the twin turbo.
Common telltale signs are engine noises, abnormal oil consumption, significantly reduced engine power, etc.
Notes When Using Twin Turbo Kit For C4 Corvette
The durability of the C4 Corvette twin turbo kit will largely depend on how it is operated and maintained. Therefore, to prolong the life of the turbo engine, users should note a few things:
Limit Movement Immediately After Starting The Engine
Because current automobile engines employ an electronic fuel injection system, it is not essential to wait too long before driving.
However, many experts recommend stopping the car for 2 to 3 minutes before moving if you use a turbocharged twin-turbo TT car like the Chevrolet Corvette (C4).
The cause for this is that the twin-turbo SBC utilizes the same engine oil. Because the motor’s oil remains cold (denser) when the automobile is first started, it moves less rapidly.
And now the oil requires time to pump. As a result, the engine and turbocharged engine impact might be improved.
80 to 95 degrees Celsius is the ideal temperature for the oil to flow and lubricate the components.
The time needed to wait for the oil’s temp to increase will vary depending on the engine heating components of each car.
However, it is usually advised to let the automobile idle for up to three minutes before rolling.
Do Not Turn Off The Machine Instantly After Stopping
For vehicles with a turbonetics turbo twin-turbo kit for a c4 corvette engine, it is advisable to limit shutting down the machine immediately after stopping the car.
Because with turbonetics turbo, the temperature generated is very high.
Oil has a very important role in cooling the engine, so many people think that it is not only used as a lubricant but also as a coolant.
If the engine is suddenly shut off while still warm, the oil in the machine will not be circulated and can only be accessed locally at select ideal spots. This causes the oil’s quality to decrease fast.
The oil’s additives disintegrate quicker, and the oil degrades faster.
When traveling with a turbo kit for a c4 corvette, the driver should be cautious and slow down just a few miles before the intended location.
Allow the automobile to restart from 2 to 4 minutes after stopping, then switch off the engine.
Avoid Driving At Too Low a Turbo
Engine emissions power the twin-turbo TT. The kit turbo will not achieve a particular rpm threshold if the engine runs too low.
This implies that the vehicle’s control will not be maximized. As a result, driving at too low a rpm may appear to conserve gasoline, but it does not.
Conclusion
Through my article, you learn the basic definition of a twin turbo kit for c4 corvette. As well as its origin and function.
Car owners should remember that the kit turbo is an essential component not to drive a car with a broken twin-turbo system.
Therefore, immediately take it to the garage if the c4 corvette has problems with the twin-turbo SBC or if you want aftermarket turbo conversions.