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If it's not really about tuning or wiring. Then it belongs in here.
Hi all , I have an ACE dual plate clutch in my 2007 VE SS and have found it to be very finicky when moving off from standstill , it will shudder if the revs are not perfect every time , in comparison to my old HSV 427 single plate clutch which would pull with zero throttle from idle very smoothly. Any advice ideas please
I would work with the clutch provider. There may be other springs or clutch compounds that are more streetable. What you describe is what a lot of racing clutches feel like.
Can you provide some actual details on the clutch assembly? Ceramic and sintered can be a bit grabby, especially compared to organic. Higher spec' "race" friction plates will usually be rivetted directly to the hub plate, without the marcel spring that gives a more progressive transition from initial contact to full engagement, because the focus is on maximising torque capacity while minimising the moment of inertia. Because there may be a problem with the stacked height, and they add weight, hub springs are often left out too, but that shouldn't affect the takeup as much.
Uh, that wasn't actually any help, as the procedure is about the same for all dual disc clutches and that was a generic instruction set..
If you did assemble it, did the friction linings look like that or did they have a metallic coppery colour? When looking at the friction plates edge on could you see a gap with a sort of wave between the linings? Did the friction plates have a similar series of springs around the hub?
the clutch in the pictures is the exact one i have in the car
Ah, if you look at pictures 7 & 9 in the guide, you can see there appears to be no Marcel spring, which is used to give a progressive engagement - they look like these - https://www.google.com/search?client=firefox-b-d&q=clutch+marcel+spring. Without the spring the clutch will have a very abrupt take up, characterised by grabbing and chattering.
I'd suggest giving the supplier/manufacturer a call, or e-mail, to check if they're used in the clutch friction plates - sometimes they aren't used for a street car if there's a problem with tight clearances and, with a 'race' clutch, they're usually left out with the linings riveted/bonded to a flat plate because they aren't needed and just add weight and failure points.