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Old 06-10-2004, 09:59 AM   #1
Scooby Specialist
Member#: 37962
Join Date: Jun 2003
2006 CGM STI
2000 Outback & 05 BMW M3

Default Does the WRX & STi have a clutch delay valve?

Does the WRX and the STi have a clutch delay valve? It's a valve in the hydraulic clutch line that would delay clutch engagement during sudden applications of the clutch in order to protect driveline components.

edit - I did a search and the 03 and up WRX does seem to have one, but I didn't see anything about the STi, does the STi have the clutch delay valve too?
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Last edited by Zoso; 06-10-2004 at 10:07 AM.
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Old 06-10-2004, 02:49 PM   #2
Scooby Guru
Member#: 7922
Join Date: Jun 2001
Chapter/Region: MWSOC
Location: Tucson
04 CTS-V b/b/b
99 GMC Highrider


You are correct that the 03+ WRXs have the valve. I'm not sure about the STi though, but I would assume that is does too.
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Old 06-10-2004, 03:08 PM   #3
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should be easy enough to determine - look at teh clutch slave cylinder, if it has a hexagonal silver thing attached to it that is the valve. the cylinder itself is painted black.
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Old 06-11-2004, 12:37 AM   #4
Tuning Factory Inc.
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Location: Detroit, Michigan, USA

STi does indeed have one. ATS sends you a GC8 slave to use since you can not use a restrictor of any kind with a multi-plate clutch.
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