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S4s bolt spacing is different from S4 and SE. I've been told that S4s has the same pattern as S300. Later on, for V8s a double plate clutch was implemented.
Parts catalog shows A082Q6032F for S4,
but S4s and S300 had a different number, P525.4701.607AF
I bet they will make you a bespoke unit. I think they have un-drilled generic pressure plates that they can set up to fit anything?
Probably wont be as reasonably priced as the elise but it might be worth a call. I think I read where some one sent there old one in and they rebuilt it with custom stuff?
I wonder if Lotus set the clutch up a little as a "fuse" knowing that the transmissions were not the strongest. Maybe intentionally putting a slightly lighter Pressure Plate than one might normally spec. That way if there is too much ham fisting going on the clutch would slip a bit preserving the trans?
Mine feels like it might not hold if I abused it but I am not sure how may miles on it.
I think I read that Subaru set the WRX up like this. Of course everybody upgraded the clutches and started blowing axles and transmissions.
I wonder if Lotus set the clutch up a little as a "fuse" knowing that the transmissions were not the strongest. Maybe intentionally putting a slightly lighter Pressure Plate than one might normally spec.
That's how my WRX is set up. OEM clutch between my modified motor and an expensive 6-speed. With my self funded warranty, I want the clutch to slip before my tranny tosses teeth! AWD w/LSD doesn't have forgiving wheel spin on pavement
On S4s, with its high torque output, I wouldn't use S4 cover with less clamping force than the Lotus original Spec.
If you run a "red chip", or other high torque/power chips in your S4s, a stronger cover (10000N) may be required.
NOTE: S4s/S300 cover & flywheel have a different hole pattern and DO NOT FIT S4 nor SE. To retrofit, the flywheel would have to be re-drilled/tapped with S4s hole pattern.
PNM has a kit number PNMQ6070 for sale. Anyone knows its clamping force?
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