29-01-2013, 08:48 PM
I was running 22psi on a GT20V making about 175hp regularly for over 20k miles, the engine is still going today albeit with a slightly different turbo...
I also had an XUD9 running 30+psi on a K14 which never technically died, it blew the head gasket at 150k which isn't unreasonable, it wasn't even a bad blow, just ended up pressurising the coolant a shitload with a bit of mayo and lost compression on middle cylinders...
Long as you treat the engine well, don't let it overheat and run GOOD oil in it, they're darned reliable IMO anyway...
I also had an XUD9 running 30+psi on a K14 which never technically died, it blew the head gasket at 150k which isn't unreasonable, it wasn't even a bad blow, just ended up pressurising the coolant a shitload with a bit of mayo and lost compression on middle cylinders...
Long as you treat the engine well, don't let it overheat and run GOOD oil in it, they're darned reliable IMO anyway...