OS Giken Ground Touring Single Clutch Impressions?

modme

The new OS Giken Grand Touring clutches are much better than any of the older series (steel plate, aluminum plate). I had the steel cover twin plate and it was very difficult to drive. The pedal was very stiff.

However, the new Grand Touring twin plate with soft diaphragm is completely different. It is very close to the stock clutch in terms of pedal pressure and driveability. The only difference is that it holds a lot more power.

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GTM Twin Turbo Stage 2|GTR Turbo/Engine Gauges|KW V3 Coilovers|HKS Exhaust|Oil Cooler| Vossen CV1

JB-370z

That's what I like to hear. Not sure if Sam sent me the Soft or Hard setup. Is this adjustable? I also like that this clutch is supposed to eliminate most of the chatter found in allot of other aftermarket clutches.

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GTM Stage 2 Twin Turboed 370z (First in Texas, Thanks To Baker Tuning)

modme

Unfortunately, it is not adjustable. The hard and soft setting refers to the clamp rate on the diaphragm. You would need to change the entire pressure plate to change the hardness. I personally have the soft setup, which is more stock like pedal pressure. The soft plate will hold around 500hp and hard plate will hold around 700hp.

Although the clutch engagement is hugely improved over non grand touring types, the noise is about the same. At idle, you can still hear the clutch chattering.

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GTM Twin Turbo Stage 2|GTR Turbo/Engine Gauges|KW V3 Coilovers|HKS Exhaust|Oil Cooler| Vossen CV1