Looking for some info

[Perkul8r]

So. For the past couple weeks I have been running my car fairly hard. I have the MBC set at 15psi and with the 3 inch exhaust it will creep to 18psi.

The problem I have been having is that I keep blowing my dipstick out and blowing oil into the engine bay.

I have replaced the PCV valve already and that didn't help anything. From the reading I have been doing it seems as though I can have either bad rings or possibly bad headgasket. I jsut replaced the HG with a felpro one, had to when I got the car, and I added ARP standard headstuds to it also.

Now, if it is the rings, is it possible to replace them with the motor in the car? If it would be easy to, would it be possible to swap out the old stuff with my 2g piston/1g rod setup i have?

I plan on doing a leakdown test tomorrow. So I will hopefully know where the leak is. I am just trying to get some info before I get that far so I know what I am dealing with. And I have been searching, but haven't found much about replacing rings while motor in car.

Info on the car
AFAIK Stock shortblock with unknown miles on it.
Headgasket and studs were put in about 2 months ago. ARP studs where used though.
still running the 13b turbo.
2.5 inch downpipe, 3 inch exhaust after that.
I am not sure what else you would need to know.

Thanks.