I ve just been repiping up the pipe work for the wastegates on my ihi twin turbo set up. When testing for leaks i found, when blowing down the pipe from the turbo compresser to the wastegates one of the wastegates was leaking the pressure in to the exhaust/screamer pipe. i have stripped the wastegate expecting to find a seal that had failed but there is nothing on the plunger shaft, do they just rely on a good fit on the shaft to hold the pressure?
I am unsure what the wastegates are they are the ones from this post
http://www.mkivsupra.net/vbb/showthread.php?t=147199&highlight=big+ihi+turbo
Any help or info will be appreciated
cheers
Neil