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What 4 wheel drive system does the Subaru use?

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Old 31 March 2005, 12:06 PM
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Michael Ghia
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Default What 4 wheel drive system does the Subaru use?

Hi,
What 4wd system does the Subaru use?
Does it have a centre diff? Or an electronically controlled VC???
Thanks in advance
Mike Ghia
Old 31 March 2005, 12:14 PM
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john banks
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Impreza UK models (non-STi) use an open front diff, viscous centre and (IIRC) rear diffs, with no electronic control.

The UK STi 2005 model has plated (IIRC) front and rear diff, and an electronically controlled centre diff which is manually adjustable or as default operates in auto mode, with information from a yaw rate sensor amongst others.

I'm sure some pedant will correct me where I am deficient
Old 31 March 2005, 12:46 PM
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Michael Ghia
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John,
Thanks for the info... so does the UK models use a centre diff which has a VC for controlled locking.... or does it use just a VC which means that the 4wd is not permanent but part time?

Mike
Old 31 March 2005, 01:14 PM
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john banks
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4WD is 50/50 split - ie permanent. BTW, there is a 1.1:1 drop gear on UK models that requires thought when choosing front/rear diffs.
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