[V6-12v] More on V6 Head Bolt re-torque

Tom Christiansen tomchr at ee.washington.edu
Sun Sep 12 16:56:47 EDT 2004

At 11:27 AM 9/12/2004, apowell at colocougs.org wrote:
>I have the valve covers off my 1993 90Q V6 (2.8L), with the intention of 
>tightening the head bolts
>1/4 turn as directed in the factory manual after removing and replacing 
>the intake manifold.
>Two problems:
>1) The bolt heads are only about 11 MM, and they are not octagonal. They 
>are star-shaped. I don't
>have a socket to match these heads.  Anyone know whether this bolt head 
>design has a specific name
>(ala Torx or other distinguishing ID) to help me find the correct socket? 
>Also, any idea where I
>might buy a socket designed for these bolt heads?

They might be quadruple triangle (or triple square) head bolts. The ones on 
the drive shafts on my 1994 90S are the same. I bought tools for them at 
Tooltown in Seattle. According to google, their phone number is (206) 281-1166.

I have noticed that Lake City Bow-wow in Seattle have a limited selection 
of them as well. http://www.bowwowseattle.com/

I would suspect that The Parts Connection would have them, but have not 
confirmed. www.thepartsconnection.com

According to Bentley, the torque spec is 60 Nm (44 ft lb) plus a half turn 
(two quarter turns is OK as well).


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