chalks Posted March 6, 2018 Share Posted March 6, 2018 Hi all, I know there is already a lot of coverage on clutch & release bearing noise, but I think mine's different! I've recently fitted a lightweight flywheel and new clutch & spigot bush, and now have v noticeable noise/chatter when on throttle, below 2k rpm. It goes away at higher revs... It's not the same chatter as I had with the DMF at idle.... there is no noise at idle. I've seen in a couple of posts people have said it could be the gearbox idler gear / input shaft bearing- is that right? Also does anyone stock the parts or do they have part numbers? Thanks! Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted March 6, 2018 Share Posted March 6, 2018 It is normal for SMF to chatter below 2000 rpm. A change in driving style will almost alleviate your issue. Quote Link to comment Share on other sites More sharing options...
chalks Posted March 6, 2018 Author Share Posted March 6, 2018 Hi, thanks for your input- it's only been in for 150 miles but yes, I'm now automatically trying to keep it over 2000rpm. So you don't think it's something in the transmission that is highlighted by the solid flywheel? Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted March 6, 2018 Share Posted March 6, 2018 The SMF has no damping properties so any transmission noises will be "exaggerated" That is one of the reasons why manufacturers install a DMF from the factory to "mask" such noises. Just don't labour it and keep the revs above 1500 rpm and you will be fine. What brand of clutch and SMF did you fit? Quote Link to comment Share on other sites More sharing options...
chalks Posted March 6, 2018 Author Share Posted March 6, 2018 (edited) Thanks for the advice! It's a TTV billet flywheel, v nice quality, 6.4kg: I put an OE slave cylinder in and a Competition Clutch kit from Torqen, which I hadn't heard of but was recommended to me! I've had solid flywheels (not lightweight exactly) but not had the resonance I'm getting with this setup. Fine down country lanes but driving in traffic may become annoying... Thanks again for your help Edited March 7, 2018 by chalks Tried to unsuccessfully get rid of unrelated pic!! Quote Link to comment Share on other sites More sharing options...
ZMANALEX Posted March 7, 2018 Share Posted March 7, 2018 6.4 kg is a tad light and will only add to the chatter. The lighter the fly the more change in inertia. However, it is what it is and within a few months you will become accustomed to it. Perhaps in hindsight, you should have fitted the Extreme clutch and fly kit, which would have been much quieter. Quote Link to comment Share on other sites More sharing options...
chalks Posted March 7, 2018 Author Share Posted March 7, 2018 Ok, thanks for your input. I'll come your way for parts in future! Quote Link to comment Share on other sites More sharing options...
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