What's the difference between flywheel and a flexplate?!
Hope some of ya can take a brake from fighting on this forum and answer a mechanical question: just as the title says - what's the difference? They are similar it seems - one is heavier than the other.... is it the automatic vs the manual trans that makes the difference?
Thx, James |
Flywheel is for a manual trans, flexplate is for an auto.
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A flywheel bolts to the crankshaft and is typically used with a clutch with a manual transmission. It serves as the friction surface against one side of the clutch disc. It has a good bit of mass to store energy to keep the engine turning between pulses at idle.
A flexplate is very thin and also bolts to the crankshaft. It serves to mount the very heavy auto trans torque converter. The weight of the torque converter provides the mass as described above. Both of them have a ring gear for engagement of the starter. Hope this helps Larry |
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Different in weight. Some are balanced together with the specific crankshaft in the engine so are not simply interchangeable. Flex plates are more likely to be interchangeable I think.
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Generally Kerry is correct. This, again generally, is because a flexplate has very little weight to begin with. Engines are either internally balanced with crankshaft counterweights and such, or externally balanced where specifically positioned and specific size weights are put on the harmonic balancer and flywheel. So, obviously, an externally balanced engine will sometimes have a balancing weight on the flexplate or maybe in some engines the torque converter. |
Some manual transmission cars have flex plates too, like many neons, both automatic and manual engines were assembled with a flexplate, than a clutch or torque converter bolted to it depending on what car it went in.
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