Hi,
The idea that you reused the same flywheel with a different size engine doesn't seem like the best idea. If you replaced the engine with a 4.0, it's going to be different. As far as engines being balanced, yes they are, but components which attach to them must also be balanced. For example, a harmonic balancer is designed to reduce vibration and the flywheel is also balanced for the engine design to reduce vibration.
Keep in mind, the original flywheel could have been warped, or something could have caused a balance issue. So, here are directions for removal and replacement, and the second set of directions are for checking/testing the flywheel. All attached pictures correlate with the directions.
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2000 Ford Mustang V6-3.8L VIN 4
Flywheel - Removal and Installation
Vehicle Transmission and Drivetrain Flywheel Service and Repair Procedures Flywheel - Removal and Installation
FLYWHEEL - REMOVAL AND INSTALLATION
Removal
1. Remove the transmission.
2. If equipped with a manual transmission, remove the clutch.
Pic 1
3. Remove the flywheel bolts.
Installation
Pic 2
1. To install, reverse the removal procedure.
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Flywheel checking:
1. Check the flywheel surface for scoring, cracks or discoloration. Minor scotches or discoloration should be removed with a fine emery cloth.
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2000 Ford Mustang V6-3.8L VIN 4
Flywheel Runout Check
Vehicle Transmission and Drivetrain Manual Transmission/Transaxle Service and Repair Procedures Manual Transmission and Clutch Flywheel Runout Check
FLYWHEEL RUNOUT CHECK
Special Tools
Pic 3
1. Mount the special tool so that the indicator contact point rides on the clutch disc contact surface.
Pic 4
2. Turn the flywheel; if the runout exceeds the maximum allowance, install a new flywheel.
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I hope something here helps. Let me know if you have other questions.
Take care,
Joe
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Sunday, March 29th, 2020 AT 8:50 PM
