clutch compatibility between JDM /USDM

supermoose · 08-20-2003, 12:20 AM

okay. so having to find this out on my own, this is what ive learned (rallispec = smart)

the gc8 turbo flywheel is 225mm bolt pattern, it takes 225mm clutch disc, and pressure plate

gda turbo flywheel is 230mm, 230mm clutch disc and pressure plate for 230mm.

newer = bigger.

throwout bearing, pilot bearing are compatible,

im guessing that old ej22 legacy has the same clutch setup as the impreza GC8 turbos, so it would use 225mm bits. can anyone verify that / measure it?

if u want to use GDA complete clutch setup (incl. flywheel) with GC8 turbo car trans, it shoudl work just fine. other way around too, if u are in a pinch or weird funny situ.

cools

h

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AWJunkies · 08-20-2003, 01:25 AM

GC8 turbo? aftermarket? one thing is Gc8 is push type clutch and US WRX and JDM WRX are pull type clutch. Totally different design. Pressure plates are different and throwout bearings. Also, the slave cylinder for clutch is different. Oh ok i guess you are talking about legacy tranny not 2.5rs. Still helpful info.

supermoose · 08-20-2003, 03:12 AM

gc8 turbo is refering to JDM where real gc8's exist. there are no actual gc8's that were USDM sold.

im talking about the gc8 body style Japense turbo transmission taht came on the turbo car.

just to clear it up.

all turbo trans have the same setup.

h

Jordan Gerein · 10-15-2012, 09:09 PM

I need a new clutch slave cylinder for my 96 jdm gc8 sti. does anyone know the part number of the slave cylinder I need?

08-20-2003, 12:20 AM	#1
supermoose Visiting NASIOC Timeout Member#: 9093 Join Date: Aug 2001 Location: SF Vehicle: 1995 RHD STi RA Ver2 swap starr	clutch compatibility between JDM /USDM okay. so having to find this out on my own, this is what ive learned (rallispec = smart) the gc8 turbo flywheel is 225mm bolt pattern, it takes 225mm clutch disc, and pressure plate gda turbo flywheel is 230mm, 230mm clutch disc and pressure plate for 230mm. newer = bigger. throwout bearing, pilot bearing are compatible, im guessing that old ej22 legacy has the same clutch setup as the impreza GC8 turbos, so it would use 225mm bits. can anyone verify that / measure it? if u want to use GDA complete clutch setup (incl. flywheel) with GC8 turbo car trans, it shoudl work just fine. other way around too, if u are in a pinch or weird funny situ. cools h * Registered users of the site do not see these ads.

08-20-2003, 03:12 AM	#3
supermoose Visiting NASIOC Timeout Member#: 9093 Join Date: Aug 2001 Location: SF Vehicle: 1995 RHD STi RA Ver2 swap starr	gc8 turbo gc8 turbo is refering to JDM where real gc8's exist. there are no actual gc8's that were USDM sold. im talking about the gc8 body style Japense turbo transmission taht came on the turbo car. just to clear it up. all turbo trans have the same setup. h

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08-20-2003, 01:25 AM	#2
AWJunkies Scooby Specialist Member#: 32934 Join Date: Feb 2003 Location: Dallas Vehicle: 99 2.5RS JDM WRX silver	GC8 turbo? aftermarket? one thing is Gc8 is push type clutch and US WRX and JDM WRX are pull type clutch. Totally different design. Pressure plates are different and throwout bearings. Also, the slave cylinder for clutch is different. Oh ok i guess you are talking about legacy tranny not 2.5rs. Still helpful info.

10-15-2012, 09:09 PM	#4
Jordan Gerein Scooby Newbie Member#: 318939 Join Date: May 2012 Chapter/Region: W. Canada Location: Regina, SK Vehicle: 96 Subaru Wrx Sti Silver	I need a new clutch slave cylinder for my 96 jdm gc8 sti. does anyone know the part number of the slave cylinder I need?