[Supras] ARP-2.2 mm Cometic head bolt retorquing

[berniek at technicaldevelop.com]

Rockey and group:

    Just got done pulling the top end of the engine apart and first 
removed the cam cover on the exhaust side after about 50 miles and maybe 
10 temperature cycles.  The ARP nuts were tight.  They cracked slightly 
when loosening them with a torque of about 80-90 lb-ft.  When 
retorquing, virtually no tightening was required, even up to 90 lb-ft.  
I tried about 3 nuts, two in the center and one at the front end, and 
they were all the same.  After seeing that, I did not bother to remove 
the intake cover (difficult due to fuel pressure gauge  in the injector 
rail and dual injector connectors.  Left the stock ones in place "just 
in case" and spliced in the Greddy connectors). 


    I still wonder, though, if in time the indentations the gasket will 
make in the head and block from thermally induced relative movement will 
make retorquing necessary in the future.  Guess I might take a look at 
this again at perhaps 10K miles.  In the meantime, on to 14 PSI boost. 


    As always, comments would be appreciated.


          BernieK