[Fot] Re-torquing a cylinder head - GT6

[gt6steve at aol.com]

Myself, I would simply retorque to your value.  Gaskets will compress over time and a retorque is appropriate after a few heat cycles.   IMHO



-----Original Message-----
From: Scott Janzen via Fot <fot at autox.team.net>
To: 'Friends of Triumph' Triumph <fot at autox.team.net>
Sent: Tue, Sep 19, 2017 5:18 pm
Subject: [Fot] Re-torquing a cylinder head - GT6


I’m adjusting valves after the last race weekend.  For whatever reason, I put the torque wrench on a couple of the head bolts - and found maybe 90 degrees of movement on the few nuts I checked.  


I run a Payen head gasket - composite with a metal ring at the combustion chamber.


Should I:

loosen one nut at a time, lube with moly as provided by ARP, and retorque to ARP spec;
tighten from the current position to ARP spec (75 ft-lb)
do nothing




The engine has probably four race weekends on it.  I can honestly say I have never re-torqued Payen gaskets before, but I have also re-checked the torque on other gaskets and not found any movement.





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