Correct me if I'm wrong but I haven't seen any detailed threads on re-torquing the 12 valve head bolts down to handle more boost which I'm looking into as I build up the engine a little.
Here's a good article I read online from diesel power mags you can read here
on torquing the bolts down. They give 2 methods of doing it and warn the reader of torquing the bolts down more than 120 ft-lbs.
The article states the Factory Cummins torque spec is around 115 ft-lbs.
However - my Chilton manual gives the stock torque spec as
66 ft-lbs +1/4 turn for the short head bolts and 90 ft-lbs +1/4 for the long head bolts.
My Question: Does anyone else have experience with this? What's the true factory specs and what specs can you push the stock bolts too?