Cadillac DTS Forum - 2006 through 2012 Discussion, Timeserts? in Past Cadillac Vehicle Discussion; 06 DTS 4.6 Y engine code getting exhaust gasses in coolant and overheating. Mech says it needs timeserts in the ...
06 DTS 4.6 Y engine code getting exhaust gasses in coolant and overheating. Mech says it needs timeserts in the block when replacing the head gaskets? I found info for the older model engines, but not the 2006? Does it need all this extea work?
Thanks for any info.
When HG issues occur in an engine with course head bolt threads (some '04's, all '05+), it's a legitimate gasket issue, not a bolt hole thread pulling issue. No machine work/inserts should be necessary, just new head bolts (which are one time use, torque to yield).
Back when 'The Guru" used to post on here, he stated that timeserts were developed to use not only if the threads failed, but also due to the fact that removing and reinstalling the headbolts may damage the threads. Even with the newer coarse threads, I'm not sure if I would risk all that work and still have another problem later on.
That's true, inserts used to be part of the repair weather there was thread damage or not. But the corse threads are more robust than the fine threads of the older engines. AFAIK, no thread repair is done at a dealer service department after head removal on the newer, corse thread blocks.