David S. Wallens
David S. Wallens Editorial Director
6/22/11 10:45 a.m.

The latest garage session with the Porsche didn't exactly go as planned. We started the day looking at a valve adjustment, which is regular maintenance on these cars.

When we removed the lower-right valve cover, however, we received some bad news: a broken cylinder head stud. What made it really st…

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6/28/11 1:41 a.m.

Hey, dudes! Better order a flywheel, too.

David S. Wallens
David S. Wallens Editorial Director
7/8/11 2:33 p.m.

Thanks. It's been sent out for machining. Should be good as new.

cmovic None
4/20/13 12:37 p.m.

I chose ARP head studs when I rebuilt my '78 911SC engine. Once it was done (sigh) a trusted mechanic suggested I check the torque on my studs at least once a year. Sad to say he was right. Four of my exhaust studs have a tendency to loosen. Now I re-torque the exhaust studs every fall while changing my oil prior to putting the car away for the winter.

The mechanic who tipped me off to this issue recommends Porsche 993 or Raceware on early 911 engines.

Glad to see you're enjoying your car.

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