S4 (B6 & B7 Platforms) Discussion Discussion forum for the B6 Audi S4 produced from 2003-2005 And B7 Audi S4 produced from 2005 -2008

Dual mass to single mass flywheel

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Old 11-20-2006, 10:41 AM
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Default Not yet for the S4, but sure they can definitely be done...

right now there are two companies willing to make a LWFW for us but they are both SM and I believe they are going to do aluminum. Steel can be done but Dahlback did that in the past for our 1.8t brothers and it wasnt any better. My hope would be for a redesigned and lightly lightened dual mass unit.
Old 11-20-2006, 11:27 AM
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Cool. Care to expand the acronym? Lightweight....
Old 11-20-2006, 11:41 AM
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Light Weight Single Mass Fly Wheel
Old 11-20-2006, 11:59 AM
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lol
Old 11-20-2006, 12:19 PM
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Default Re: Hmmm hopefully one will come around before I

Need to do my clutch and/or timing chain
Thanks for the feedback.
Old 11-20-2006, 12:27 PM
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Default Looking at those posts and all the testing that Captain and Avram did...

you can see that this subject could be and has been hotly debated. I'm not an Audi engineer but I do know that some efforts to reduce the effect of DBW were successful without touching the FW.... return to throttle effect particularly. It likely is a result of more than one component.
Old 11-20-2006, 01:15 PM
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Default No doubt, but we're talking a couple different issues...

Throttle inputs and sensitivity can definitely be controlled via computer and there are several ways you can adjust this such as sending out false signals to the DBW throttle controller but overall revs when on the clutch does not have the throttle engaged and in this case is mechanical from all the energy stored in the DMFW. SO I do agree that both issues can be addressed but in different ways. But for rev mathching and returning to idle off throttle with the clutch depressed a LWFW will help this at the expense of a lot of poor driveability. Items that fool the DBW throttle conroller will definitely help sensitivity, but come with their own drawbacks which is poor modulation or the "off/on" feeling that has most people removing the devices after a few months with them on.
Old 11-20-2006, 01:31 PM
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had to look it up in websters
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