Dual Mass flywheel? - Ford Powerstroke Diesel Forum
 
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post #1 of 4 Old 11-15-2011, 01:57 PM Thread Starter
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Dual Mass flywheel?

Ok so I've done my homework etc etc... I just don't know if my truck has a dual mass flywheel or not. I pulled the cover off the bell housing, and it seems to me it's single.. but in all my travels i've never encounter a dual mass flywheel that I can recall, somebody have a picture? Or is there something specific to look for? Thanks

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Originally Posted by ol_Blue97 View Post
quick.... there is a fight in the performance section!!!! hahahaha i feel like a high school kid
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just a bit large lol, but thanks bud
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post #2 of 4 Old 11-16-2011, 09:26 PM Thread Starter
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Any ideas? Maybe some characteristics of the single mass? I know the gear noise, which mine is obnoxious, which is one of the things that leads me to believe it is in fact a single. But it also bucks hard when I take off pulling heavy. Under about 20-23K it's fine, but I pull some monster loads, upwards of 40K sometimes hauling equipment. Is that just clutches in general, or is that a single mass single disc clutch thing? Or did the dual masses even help with smoother engagement under heavy load?

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Quote:
Originally Posted by ol_Blue97 View Post
quick.... there is a fight in the performance section!!!! hahahaha i feel like a high school kid
Quote:
Originally Posted by 351fifty View Post
just a bit large lol, but thanks bud
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post #3 of 4 Old 12-01-2011, 06:53 AM
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I'm not sure but if you take off the cover with it shut off then get a pry bar and on the teeth of your flywheel pry a little and if the teeth move and the engine does not you have a dual mass fly wheel
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post #4 of 4 Old 12-01-2011, 12:42 PM
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The dual mass flywheel will have the dampening springs in the flywheel itself (and none in the clutch disk), where the single mass units will have the springs in the clutch disk. The DMFW will also have 2 masses that can be slightly counter-rotated agaist each other (about 5/8" or so). Cheers!

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