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TR4/4A TR3 and TR4a flywheels interchangeable?
- Thread starter tdskip
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TR4nut
Yoda
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The TR3 flywheel is set up for the fingered clutch, which I think is larger and heavier than the diaphram clutch on the 4A - so you may need to redrill for the pressure plate depending on which you use. Also, if it is an early TR3 with a press in ring gear I think that is for the early bomb starter and that would be more of a problem as it is incompatible with the 4A starter. Later TR3A and TR4s have the bolt on ring gear which would be compatible.
TR3driver
Great Pumpkin - R.I.P
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The gear-drive starters make an easy way to mix-n-match flywheels, as they will work with any exhaust and any gearbox. A local friend of mine even took his starter back to the vendor and got it converted to the other flywheel type.
Should be no problem using the TR3/4 'finger' clutch in a 4A, but be sure to change the throw-out bearing to match. The TR3/4 clutch takes a flat face bearing instead of the rounded face used with the 4A clutch. ISTR the bearing carrier is different as well, but I could be mistaken on that point.
Should be no problem using the TR3/4 'finger' clutch in a 4A, but be sure to change the throw-out bearing to match. The TR3/4 clutch takes a flat face bearing instead of the rounded face used with the 4A clutch. ISTR the bearing carrier is different as well, but I could be mistaken on that point.
