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Old 01-27-2006, 10:28 AM   #1
Scooby Specialist
Member#: 8775
Join Date: Jul 2001
Chapter/Region: South East
Location: Mobile,AL
2010 "Zed" 1000

Default head bolt question??

I'm installing an STI 2.5l on RS heads. I want to know if the tightening sequence and torque specs are the same as the DOHC heads? I believe so but I want to make sure.

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Old 01-27-2006, 11:36 AM   #2
NASIOC Supporter
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Join Date: Aug 1999
Chapter/Region: NWIC
Location: Austin, Texas, USA
The 93 W/EJ20K-sold
Subaru-less :(


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Old 01-28-2006, 05:14 AM   #3
Scooby Newbie
Member#: 22810
Join Date: Aug 2002
Chapter/Region: South East
Location: Knoxville, TN
2002 WRX Drag Car
Best E.T. 9.842 @ 148


its the same on all DOHC. I would recommend using head studs from ARP. We use them on all the engines we build and have yet to blow a head gasket. The factory bolts are stretch bolts so, if you run alot of boost they will stretch.

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