How long does it take to resurface flywheel?

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asked Sep 1, 2022 in Repairs/Maintenance by Justinfartty (1,650 points)
How long does it take to resurface flywheel?

1 Answer

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answered Sep 21, 2022 by Salmorejo (40,200 points)
To resurface a flywheel it takes around 4 minutes.

Once you have the flywheel ready to be resurfaced it should only take at most 4 minutes to resurface the flywheel.

You can tell how many teeth a flywheel has by counting the flywheel teeth.

If the flywheel is in the engine you can mark the first tooth you see and then continue counting until you need to turn the flywheel over again to see the other tooth and then mark those teeth and count again after spinning the engine over.

If the flywheel is out of the vehicle then you can simply mark the first tooth and count the teeth until you reach the marked tooth on the flywheel which will give you the amount of teeth the flywheel has.

The instrument that is used to check flywheel face out is a dial gauge.

You can mount the dial gauge magnetic base to the engine flywheel housing and then set the indicator pointer against the friction face of the flywheel near the outer edge.

Then set the dial gauge to zero and turn the flywheel one revolution and observe the amount of variation.

To measure a flywheel size you can use a tape measure and measure from side to side to get the width of the flywheel.

To measure the surface of a flywheel you can use a dial caliper to measure from the flywheel friction surface to the straight edge.

Then record the distance and again use the dial caliper to measure from the engines housing to the flange to the straight edge.

Next subtract the distance from the previously recorded distance.

The cost to replace a flywheel ranges from $500.00 to $1,000.00 depending on the vehicle and the shop that does the job.

If you can replace the flywheel yourself then you can do so for around $200.00 or less which would be the cost of the parts and then your time.

Replacing the flywheel requires separating the transmission from the engine to get to the flywheel and then putting the engine back together to the transmission.

Flywheel cupping is when the flywheels surface is being worn down by constant contact with the clutch.

The cupping of the flywheel may be even or uneven.

Uneven wear on a clutch most often indicates other problems such as too much play between the flywheel and the contact point or a misaligned part.

signs and symptoms that can tell you when your flywheel needs replacing include.

Starting problems.
Shifting problems.
Rough Idle, Engine Stalling.
Dragging Clutch.
Difficulty shifting into gears.
Slipping Gears.
Burning Smells.
Vibrating Clutch Pedal and Clutch Chatter.

Flywheels typically need to be replaced every 80,000 to 90,000 miles.

A flywheel is considered a wear item like the clutch is and the flywheel should also be replaced whenever the clutch is also replaced.

Flywheel damage can be caused by improper maintenance, excessive heat, metal on metal wear, worn clutches, overheating of the flywheel and driving too long on a bad clutch.

A starter may also damage the teeth on the flywheel if the starters teeth or bendix is bad or damaged.

If your flywheel is loose it will cause a rattling or knocking sound which changes with engine speed.

A loose flywheel may even eventually come loose and cause you to not be able to drive the vehicle or start the vehicle.

The difference between a flywheel and a flexplate is a flywheel is thicker than a flexplate and a flywheel is used in manual transmission engines while a flexplate is thinner and used in automatic transmissions.

The flexplate is a type of flywheel with teeth for the starter like a regular flywheel but it's also thinner and can flex hence the name flex plate.

Flexplates are generally much thinner and lighter than flywheels due to the smooth coupling action of the torque converter and the elimination of the clutch surface.

Like flywheels, flexplates normally handle coupling to the starter motor, via teeth cut along the outer edge of the plate.

The flywheel is found primarily in vehicles that have a manual transmission, whereas the flexplate is found in automatic transmission vehicles.

Both of these components are typically heavy, but the flexplate is much thinner and therefore lighter than the flywheel.

While there are some exceptions, if your vehicle has a manual transmission, you want a flywheel, and if your vehicle has an automatic transmission, you want a flexplate.

A flywheel from the engine is connected to the casing of the torque converter.

This makes the entire casing rotate at the same RPM as the engine.

The pump is connected to the casing and thus rotate with the same rpm and direction.

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