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PostPosted: Thu Jun 06, 2019 2:31 pm 
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Joined: Sun May 17, 2015 5:35 pm
Posts: 246
Location: Newtown, Mid Wales
Car Model: 9-5 Aero Estate
Firstly yes, I know HP isn't the limiting factor of a clutch, but it should give an idea for the tune level I'm aiming for.

I have a lightened stock flywheel, and got what I believed to be a stock Aero clutch with the upgraded Sachs pressure plate.
Upon taking everything apart i noticed quite a bit of heat spots, but also it was pointed out, why don't I have springs in the clutch plate?
From checking pictures, the stock clutch should indeed be sprung, so I shall replace that i guess!
Weird, and annoying.

But also the stronger pressure plate is a bit of a beast to use, and I'm a pretty regular gym goer!
For a road car, I'd much rather something less 'hard'.

What options are there?


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PostPosted: Thu Jun 06, 2019 9:08 pm 
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Put a SOC in it!
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Joined: Mon Feb 07, 2005 4:48 pm
Posts: 21910
Location: Fliptop Towers, North Yorks...the flat bit.
Car Model: One or two...
I had a spec 2+ in FB3, with an Abbott billet flywheel, pushing out around 600Nm, and it was a bit grabby but reasonably light. It failed on me mid track day at Donington. The friction plate is a semi paddle affair and had created big high spots on the flywheel.

I replaced it with a complete Sachs motorsport job plus another Abbott flywheel. Yes it's heavy, and I'm definitely not a gym bunny, but it's a full circumference friction plate so easier on the fly, and the cover is rated for up to 650Nm.

I think what you have is the best compromise, decent uprated cover with stick friction plate. However if your torque is under 550Nm you might get away with a less aggressive Spec clutch.

_________________
S6 Avant 4.0 V8T 450bhp/550Nm
9-5 Aero ~600Nm FB3
Sonett III
96V4s


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PostPosted: Sun Jun 09, 2019 9:21 pm 
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Joined: Sun May 17, 2015 5:35 pm
Posts: 246
Location: Newtown, Mid Wales
Car Model: 9-5 Aero Estate
Thank you, do you have the solid friction plate in the Sachs kit too?

Sounds like my best bet is to MTFU and keep it!

By the way what causes heat spots? 'cause I'm worried about the ones that have shown up on my re-worked flywheel, and the pressure plate side.

Should sort out uploading some photos


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PostPosted: Thu Jun 13, 2019 1:31 pm 
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Light Pressure Turbo

Joined: Wed Jul 25, 2012 7:31 am
Posts: 395
Car Model: 1.9CDTI
I found hot spots all over the cover plate and DMF when we used the Sachs uprated organic/brass and cover plate but I put it down to running 620NM and causing slip.


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