2012 6.7 CUMMINS HEAD GASKET BLOWN!
I recently blew a head gasket on a '12 H.O., running only a DPF/Cat/EGR delete, K&N intake, and H&S 120 HP tune. Stock exhaust with delete pipes. I am getting the truck studded and an external wastegate installed today. I was wondering if anyone else has this setup on a '12 H.O., and if it worked for you? Also, what is the max. safe boost pressure to set this at? I do get on it while empty, but not while towing. The truck weighs 9,500 lbs. empty, and I frequently tow around 5,000 lbs. max with it. Gasket blew at 24,000 miles. I did all the mods at around 5,000 miles. I think everything was fine with the HG until I did a floored run from 70MPH to 120MPH (fuel limiter hit at 120) on a "private road"-head gasket started leaking the next day-probably from continuous over-boosting (I do not have a boost gauge and I do not have the H&S tuner with the "defuel" feature-I have the XRT PRO junk tuner). I did have the injector timing set to the max advance though-that may have caused the hg to fail also...This is only my second diesel so I am new to the "DO NOT"s of diesel modifications!!
Last edited by Repoman1509; 12-19-2012 at 12:15 PM.