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Old 06-06-2000, 06:38 PM
Registered User
Join Date: Apr 1999
Location: Apex, NC USA
Posts: 176
After cleaning the intake side of the head I notice oil streaks ( not serious)from what I take are head bolts (torx?). Can these be tightened individually or should the valve cover beee removed and all of them done in sequence.

If so what's the sequence? Is it really a torx bit?

1991 350 SDL
114,000 miles

[This message has been edited by Chris Haney (edited 06-06-2000).]
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Old 06-06-2000, 07:28 PM
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
The bolts are SPLINE bolts & special socket is to be used. However retorquing of cylinder bolts are VERBOTEN due to the fact they are stretch bolts (torque to yield).
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Old 06-07-2000, 05:56 AM
Registered User
Join Date: Apr 1999
Location: Apex, NC USA
Posts: 176
And so the deisel leaks on!

Thanks, Periodic cleaning scheduled.


1991 350 SDL
114,000 miles
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Old 06-07-2000, 09:15 PM
MikeTangas's Avatar
Senior Member
Join Date: Apr 2000
Location: So. Cal
Posts: 4,430
Way back when, when I worked on Detroit Diesels, they had the same saying as Harley - if it ain't leaking oil, something's wrong.

Mike Tangas
73 280 SEL 4.5
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