Quick question, was accellerating onto the freeway about 15psi into boost I think I heard just the smallest amount of impercievable knock. I backed off, and blew smoke like a smoke screen car from james bond. Car continued to smoke, all the way home, fortunatly I live close to where I was when this happened. Anyways, I checked that the crank case was well vented, and did a compression check, 95-100 psi all round.

I was expecting once face to be low from a blown side seal, which then would allow combustion pressure to fry an oil control O ring. That doesn't seem to be the case. So a turbo could be bad I have 13b-re twins.

But how do I test for a bad turbo without removing them?

 

likely the turbo took a crap, i guess you didn't get the memo that the stock turbo is only good for 12-13PSI anyways?

 

You mean stock turbos plural, yeah they suck, they (13b-re and fd twins).

. The "knock" I was hearing could have been a turbo eating ****, and it would make sence, my maps are conservative , and I certainly wasn't running out of fuel.

 

Hey I got an idea, I don't care about the turbos, so how's about I cap off the turbo oil supply line, and drive around the block??

 

well you should be more descriptive about the engine/turbos then since the engine more resembles an FD than an FC with that motor in it.

best bet is to pull off the charge pipes and check the turbos out for shaft play, simply capping off the turbos will not tell you if it is the turbo or engine that is at fault. a faulty turbine oil seal will still leak oil into the exhaust and burn it off even if you cap the turbos or vent them.

you can run the engine for a short period of time, not allowing it to warm up much and pull the plugs out, inspect them for oil, if one rotor has an oily plug where the other does not then you likely have a failed oil seal in that rotor. you can also pull the charge pipes and inspect them for oil being pushed into the intake system but this is hard to spot since a light oily film in those pipes is normal.

and plural still doesn't really apply to even twins, since it would be really unlucky to have both turbos crap out at the same exact time. (basically it would be like both of your head lights burning out at the same exact time)