You should have a "Not blown No prep OEM HG" option
I am doing a HG job now.
I will use a felpro composite to unmachined surfaces for stock boost.
My headgasket never blew. It started seeping very slowly last year, and was held off by a retorque at the time until a few weeks ago when the supe began noticably leaving its mark.
Another telltale sign I noticed was that my oil pressure gauge wasn't reading accurately even after installing a new one. The gauge would read high and take a long time to settle down. Nothing showed in the oil during changes though the cap smelled sharp. The leak was so minute that a simple compression test would've probably been wrong.
When I pulled the head, I found that this was the original headgasket, and there was no sign of contamination, obvious corrosion, build up or what not. There was hardly any pitting around the coolant holes. Due to time and head, the headgasket had aged harder on the exhaust side. No head warpage. Very discreet.
I've calmly cleaned my surfaces with a brass wire brush and plan to brake quiet the felpro and decks, and torque to 85ft lbs with moly and studs.
This is preventative maintainance with coincidentally good timing.
-Dave
I am doing a HG job now.
I will use a felpro composite to unmachined surfaces for stock boost.
My headgasket never blew. It started seeping very slowly last year, and was held off by a retorque at the time until a few weeks ago when the supe began noticably leaving its mark.
Another telltale sign I noticed was that my oil pressure gauge wasn't reading accurately even after installing a new one. The gauge would read high and take a long time to settle down. Nothing showed in the oil during changes though the cap smelled sharp. The leak was so minute that a simple compression test would've probably been wrong.
When I pulled the head, I found that this was the original headgasket, and there was no sign of contamination, obvious corrosion, build up or what not. There was hardly any pitting around the coolant holes. Due to time and head, the headgasket had aged harder on the exhaust side. No head warpage. Very discreet.
I've calmly cleaned my surfaces with a brass wire brush and plan to brake quiet the felpro and decks, and torque to 85ft lbs with moly and studs.
This is preventative maintainance with coincidentally good timing.
-Dave