I've checked boost leak and it's appear that i lose pressure on the oil pan. I need to remove it and to add more silicon join. But i don't feel like this is the reason why i can't boost more than 0.62 bar. I use a Profec B and even in mode B (1.0bar), i stay at 0.62 maximum. Any idea? I should mention that i have one air intake on each side (where the SMIC were located before) just like UAS race car. When i do the test, i have to block the other side or air is coming out this other side. Then i can't get pressure, I can hear and feel the leak. And i'm 100% sure the leak is located on the oil pan. The seal between the oil pan and the block is leaking. I should also mention I reroute the PCV valve, so should I removed them and plug them for the boost leak test? When you do a boost leak, If you pull the oil stick, don't you lose all the pressure? (I've asked on TTnet month earlier and i've been told it's normal), isn't it?
interesting, show us some pics of your engine setup.. have u got adjustable actuators or is your td05 kit the ones with the external wastegates? id say its something 2 do with those suckers
Sounds to me that your PCV's are stuck open and not sealing when positive pressure is introduced. Have you cleaned them recently or checked for proper operation? For example sealing completely when you blow through the PCV, and when you suck back in the other direction the seal is broken and air flows in the opposite direction.
M8, been through this many times before. You can't do a proper boost leak check untill you block the hoses that go from the inlet cam covers to the turbo inlet pipes. With them connected you are charging the crankcase, which is bad, and the leaks from the dipstick, oil filler etc mask the actual boost leaks. With them removed and plugged you can put in safely 16-20 psi and really find the leaks. For a boost leak test separate the intake from the crankcase and test the intake system only. Takes more time, but IT WORKS
somes pictures of my setup I have the Greddy with external wastegate. I also use a Profec B to set the boost pressure. This is about the reroute, i took the info on this forum. I can't find picture with the wastegate hose connected and i don't really remember where i plug them. I feel confident in saying i plug the top of the wastegate to the Profec B and the bottom to somewhere on the plenum.
Pull the hose off that is supplying pressure to the boost control solenoid and kink the hose to prevent a boost leak. Then take the car for a drive and give a quick wide open throttle run until you notice the boost jump past the .62 you are experiencing. If it does it means your boost controller is not setup properly. If it still persists only going to .62 bar than your wastegates are not set up properly. Beware that this is for testing purposes only and effectively removes boost control. Holding the throttle down too long will overboost to the point it may cause serious damage.
