Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   Pelican Parts Technical BBS > 1- Porsche Technical Forums > 911 Engine Rebuilding Forum

LinkBack Thread Tools Rate Thread
Thread Post New Thread    Reply
Registered User
Join Date: Aug 2004
Location: Madison, WI
Posts: 328
Torque head stud bolts after 500 miles

What torque spec should I be checking my head stud bolts at 500 miles after my rebuild? The studs on my '92 non-turbo 964 were torqued during the build to 11lbs, then +90 degrees. I can't find an answer in any of the Bentley books nor the Porsche Shop Manuals...
Old 04-15-2005, 07:02 AM
  Pelican Parts Technical Article Directory    Reply With Quote #1 (permalink)
Registered User
Join Date: Sep 2002
Location: texas
Posts: 863
That is a very good question Don. I am still in the midlle of my rebuild and scrubbing parts. I don't know when I will reach a stage to torque the head stud bolts.

When I get there, I will measure what is the peak torque value when you torque the bolt to 92 degrees.

I think the 500 miles check is to really insure than none have fallen off or loosen considerably rather than to reach the established torque value.

Old 04-15-2005, 07:33 AM
  Pelican Parts Technical Article Directory    Reply With Quote #2 (permalink)
Registered User
Join Date: Aug 2001
Location: Brighton UK since 11/2012
Posts: 3,170
There's no reason to re-check the torque of the cylinder head bolts after rebuilding. You can always just put a wrench on them to make sure there are none loose. If any are loose something was done wrong during initial assembly. Porsche does not give any recomendation for checking torque after rebuild. On most, but not all, vehicles cylinder head nut torque or stretch-tightening (which ever applies) is only done during repairs or rebuild, not after the vehicle has been run.
From November 2012; Precision Porsche Specialist
Sussex UK, +44 (0)1825-721-205
2001-2012 Gerber Motorsport Inc. 206-352-6911
07.15.06 1996 Ducati 900SP. Suprisingly enough, it's red
08.16.09 1999 Kawasaki ZRX1100. Green.
Old 04-16-2005, 06:43 AM
  Pelican Parts Technical Article Directory    Reply With Quote #3 (permalink)

Thread Tools
Rate This Thread
Rate This Thread:


All times are GMT -8. The time now is 01:55 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2017 Pelican Parts LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.