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NedHan79
Hockenheim


Joined: 08 Nov 2018
Posts: 677



PostPosted: Sun Nov 17, 2019 2:23 pm    Post subject: Light weight fly wheel choice Reply with quote

Is a sachs clutch suitable to work on a lightweight flywheel?

I bought a sachs clutch a while ago from car parts for less when the discount was good. What I didn’t get obviously was a flywheel.

Is there anything to look for when buying one?
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Armagreggon85
Trainee


Joined: 04 Jan 2017
Posts: 95



PostPosted: Tue Dec 03, 2019 1:32 pm    Post subject: Reply with quote

I've fitted a Helix sprung clutch to my lightweight flywheel. Both clutch and flywheel supplied by Coordsport. Price and service were great. One thing to watch out for, on my flywheel I needed to use shorter bolts - these are torque to yield I cant remember the exact figures but you tighten to a certain torque then follow with a certain amount of degrees. With a shorter bolt you will need less degrees to reach the right amount of stretch. I did the calculations but off the top of my head the reduction in degrees was proportional to the reduction in bolt length ie if the bolts are 40% shorter tighten them 40% less degrees.

Haven't done many miles on the new clutch so cant comment on reliability but initial impressions are good.
 
  
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Billy Bumpsteer
Monza


Joined: 12 Aug 2019
Posts: 160



PostPosted: Tue Dec 03, 2019 1:42 pm    Post subject: Reply with quote

What clutch kit did you buy? It needs to be compatible with the solid flywheel, ie; RS spec
 
  
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RXBoxster
Monza


Joined: 31 Jul 2015
Posts: 226
Location: Preston - Lancashire


PostPosted: Tue Dec 03, 2019 2:26 pm    Post subject: Reply with quote

TTV for a flywheel Smile
 
  
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NedHan79
Hockenheim


Joined: 08 Nov 2018
Posts: 677



PostPosted: Tue Dec 03, 2019 3:04 pm    Post subject: Reply with quote

Some one else mentioned a sprung clutch but I’d imagine the one I bought is a standard one. Think they had said that the bite would be sharp but it would work ok.

I’ve seen one on eBay but as with anything on eBay I’d be a bit apprehensive.
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RXBoxster
Monza


Joined: 31 Jul 2015
Posts: 226
Location: Preston - Lancashire


PostPosted: Tue Dec 03, 2019 3:08 pm    Post subject: Reply with quote

I use a light single piece flywheel from TTV, Solid disc and uprated cover from Clutchfix on my race car.
 
  
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Armagreggon85
Trainee


Joined: 04 Jan 2017
Posts: 95



PostPosted: Thu Dec 05, 2019 7:31 pm    Post subject: Reply with quote

Ttv flywheel, standard pressure plate with helix sprung friction disc
 
  
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NedHan79
Hockenheim


Joined: 08 Nov 2018
Posts: 677



PostPosted: Thu Dec 05, 2019 8:27 pm    Post subject: Reply with quote

A ttv flywheel is now sorted thanks to crash7. I still however only have a standard Sachs clutch so this is something I’ll need to look more into. I’m in no hurry as I’d say it’ll be well into the new year before I drop the engine and box but I like to gather up the parts as I go.

Where could I get a sprung clutch?
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MrMoots
Newbie


Joined: 21 Oct 2007
Posts: 14



PostPosted: Sat Dec 07, 2019 9:15 pm    Post subject: Reply with quote

Had a TTV flywheel on since April, think it's a standard Sachs clutch, but was supplied by the garage that did the flywheel so not 100%sure.

Find it really good and really improves the driving experience. A lot more gearbox noise though when on the move than I have experienced before with other 911's with LWF.
 
  
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NedHan79
Hockenheim


Joined: 08 Nov 2018
Posts: 677



PostPosted: Sat Dec 07, 2019 10:52 pm    Post subject: Reply with quote

I’m not sure on the clutch yet but I’m in no hurry. The flywheels sorted now so that’s a decent start. Good to hear your feed back on it though
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