How much does it cost to replace a flexplate?

How much does it cost to replace a flexplate?

How much is a replacement flex plate? The flex plate or flywheel plate should cost somewhere in the region of $50-160, on average.

What is an sfi flex plate?

2.1 Automatic Transmission Flexplates are circular plates that mount between the engine crankshaft and the automatic transmission converter. For the purposes of this specification, any device used as a flywheel in vehicles with automatic transmissions will be referred to as a flexplate.

How do you test a flexplate?

Start the engine and let it idle. Slide under the vehicle with a stethoscope, and place the stethoscope probe against the underside of the bell housing. Any noise emanating from the this region indicates a problem with the flexplate and/or torque converter-flexplate combination.

What happens when a flexplate fails?

A warped flexplate won’t engage properly, with the starter motor. So, when you are starting your engine listen for, rhythmic bogging down of the engine, during starting. Consequently, the teeth of the ring gear, can become damaged over time, causing a grinding sound.

What causes a flexplate to fail?

The following causes for cracked flexplate failures: 1) Out of balance engine or torque converter. 2) Bad starter drive can cause teeth or ring gear to wear rapidly or break off. Teeth can also break when engine is running and starter is engaged. 4) Some applications may require starter shims to be used.

How does a flex plate break?

Aside from a manufacturing defect, the only things that will cause a cracked flex plate are improper torque on the plate bolts at the crank and torque converter and the most common cause of transmission to engine misalignment; sometimes caused by missing alignment dowel pins that mate the transmission to the engine.

What does SFI rating mean?

Parts that carry an SFI approval are certified to be safe for racing. This means they are designed and tested to meet certain safety requirements.

How do you check your flexplate?

What makes flexplate go bad?

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