Turbo smoke?
#11
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I'm going to check the pressure at the turbo and if its high I'm going to try a .062 restrictor. I would really like to sell this turbo and get a gts76 but I don't want to sell it if there is an issue with it. I have heard of other people having some smoking problems with turbonetics but there wasn't anything really wrong with the turbo. Guess I will find out.
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I put a .062 restrictor on it and its not smoking so far. I'm going to drive it for the next couple of days and see if that fixed it.
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I think that's pretty much the best guess of pressure you can get. Since your return is free flowing, or close hopefully, that should represent a good ideal of pressure in the turbo. Put your jet in, and it will drop.
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When I tried it I was only seeing 10psi so the return must be working pretty good. I unhooked the line from the turbo and just hooked the gauge for a couple of seconds and I'm feeding 50psi at warm idle. I put the restrictor on and drained into a bottle and it is still feeding a lot of oil so it should be fine that way. It wasn't smoking last night so hopefully the restrictor will take care of it.
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I checked the oil pressure today and it had 36psi at the turbo (hot idle) without the restrictor. With the restrictor it has 26psi (hot idle) at the turbo. I sat in traffic for over an hour today and no smoke with the restrictor.
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So far it seems to be working great. I drained the turbo into a bottle for a little and it didn't seem to lose much flow with the restrictor. It dropped 7-10psi but didn't change the actual volume that much. Hopefully it doesn't decide to