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Discussion Starter #1
Im redoing my head gaskets(oem this time )black onyx lasted 12k and om thinking should i o-ring the heads or just deck and valve job..
And anyone kno a storage unit in md eastern shore big enough for me to do this as it was a pain using my stone driveway pulling the engine last year..
 

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Discussion Starter #2
Psi was at 6-8 for a year and 3 months then a couple weeks ago it goes to 12psi everytime i drive and now it is at 16psi

If i get to operating temp 190 and release pressure and drive another 5 miles it goes back to 16..guess black onyx gaskets failed..
 

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Haha gotta love black onyx.... Yeah they usually only last about a year. I would just deck the heads and go with OEM. Shouldn't need to ring the heads unless your planning on pushing a lot of boost.
 

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Discussion Starter #5
I usually only push 15 psi boost at the most on hill doing 65mph and on flat grade run 5-6psi boost..is that normal
 

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Those are normal numbers for boost you should be able to lay down 25psi at wot
 
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