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Assumeing it's the same starter, the bendix(the gear on the end of the starter that engages the flywheel)could be bad, and or the starter it self could be bad. sounds like number of teeth on new flywheel does not match number of teeth on starter. find out from mechanic that installed new fly wheel, how many teeth on flywheel if he doesnt know, a ford dealer can tell you from the part number on your receit. then ask how many teeth should be on starter to match fly wheel pull starter and count teeth
most times the only difference in same models is the number of teeth on the flywheel so if flywheel is changed out. make sure same number of teeth, or you will have to change starter motor to match
Manual Transmission Flywheel. 14" Diameter Cast Iron Flywheel With 158 Teeth Used With 11" Clutch.
You can't just replace the teeth, you have to replace the whole flywheel
Big job. To replace a flywheel, you need to remove the drive shaft,and the gearbox. iIf a manual transmission,you will also need to remove the clutch and pressure plate.If an automatic, you will need to remove the torque converter. With all this removed, you then remove the flywheel and replace with new one. then reinstall clutch,etc gear box and driveshaft.It is a good idea at this time ,if a manual transmission,to replace the clutch,while you have it apart. "NOTE" make sure when you replace flywheel that the correct number of teeth on flywheel will match number of teeth on starter motor.To do this mark a tooth on the flywheel and count the teeth.Alos count the teeth on the starter motor.installing wrong one will chew up the teeth on new flywheel and starter and then you will have to start all over.
Could be any number of reasons. Loose, bendix not engaging the flywheel correctly, worn out and bendix is chipping the teeth of the flywheel.
The flywheel can be cracked or the teeth on the flywheel can be broken or worn. Either of these conditions require the flywheel be replaced. I would also replace the starter when replacing the flywheel. This will prevent damage to the new flywheel from the worn teeth on the old starter.
A bad flywheel can definitely cause the engine not to turn over. The flywheel has teeth. If the teeth are chipped or broken, then the starter can not engage to spin the engine over.
if the starter is spinning but not engaging then the bendix (starter teeth) is not moving out to grab the flywheel teeth or the flywheel has some broken teeth. The starter needs to be removed to see what the issue is.
the starter bendix is bad or the flywheel it self has some teeth missing The Starter Bendix drive is not close enough to the flywheel. Reinstall the starter and check to see if there are shims that can be removed to place it closer.
A small flywheel has 153 ring gear teeth, a large flywheel has 168 teeth on the ring gear, small one measures 12 3/4" across and large measures 14" across.
That depends. If the car is an automatic the flywheel has 153 teeth. With a manual transmission it also has 153 teeth unless the car was equipped with a heavy duty clutch, which WAS optional in the 1972 Nova, but it is pretty rare. Most of the 168 teeth heavy duty clutches were installed behind big blocks. Yours is most likely a 153 tooth. One easy way to check this is looking at the starter bolts. If they are parallel with the flywheel, then it is a 153 teeth flywheel. If they are diagonal with the flywheel, then it is a 168 teeth, which also means that an 11" clutch is most likely installed as well.