In recent years, flexplates in high horsepower vehicles have advanced significantly. The primary improvement is regarding flexplate’s ability to deliver horsepower. The original stamped and welded flexplate is incompatible with racing car, cause it cannot bear high compression engine and it cannot stand up to the RPM range of racing car which is actually triple.
Almost two decades ago, many flexplates designed for racing were failed, since they were in lack of appropriate strength and precision that racing vehicles required from other parts in drivetrain. This finding made many manufacturers improve their flexplates at that time, including us ZNDmotor.
For instance, some producers’ flexplates are then made of 4340 steel and are machined to 4.3mm thick. The increased cross section, along with superb alloy, turns out to be suitable for engines which have approximately 1800 horsepower. And these flexplates are compatible with the majority of sports vehicles, namely sports car, super car, hyper car, performance vehicle and racing vehicle.
Despite the main improvement is regarding strength and safety, some manufacturers notice that the “flex” part of flexplate should also be resolved. If the plate is too tough, it can cause damage to other parts but flexplate is not the cause, such as bearing damage in the engine and issues in transmission.
Three kinds of flexplates
1. Stamped steel flexplate
This kind of flexplate may be what you are looking for, which is stock plate stamped out of steel. But aftermarket stamped plate is much better then the OEM one. Despite it is the most basic of the three, you can find this kind of flexplate installed in many cars, ranging from sports car in showroom to most street-and-strip capable weekend warriors.
We ZNDmotor suppose this kind of flexplate is compatible with vehicles that have 400 to 500 horsepower. Some of these flexplates can even meet SFI 29.1 certification.
Would like to know more about flexplate for racing vehicle? Please see our next blog !!!