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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections. |
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#1 |
Rotary Fan in Training
Join Date: Jun 2012
Location: Gilbert, AZ
Posts: 52
Rep Power: 14 ![]() |
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#2 |
RCC Addict
Join Date: Mar 2008
Location: Honolulu, Hawaii USA
Posts: 1,813
Rep Power: 19 ![]() |
If the car is smoking, it isn't smoking that much...
![]() I assume the exhaust ports on the engine / turbo exhaust manifold has color about the same as the turbine wheel? If so, that's good and bad. Good that it's not a major failure of the oil control rings on the engine. Bad that we cannot narrow it down to either the engine or the turbo - the oil leak isn't that bad yet. ![]() Can you take apart the turbine housing off the turbo? It's just the 6-bolts that are along the inside of the turbine housing facing the turbo center housing. Those should be 13mm (or 1/2") bolt heads. If you can take that off, we can inspect the area between the center housing and turbine heat shield. Just to make sure we cover all the bases... You did check the intercooler pipes and intercooler for signs of oil pooling in there, right? -Ted |
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#3 | |
Rotary Fan in Training
Join Date: Jun 2012
Location: Gilbert, AZ
Posts: 52
Rep Power: 14 ![]() |
Quote:
Lol it was getting annoying though and yeah i can take it apart but i dont really want to haha would i need a new gasket? And yeah i looked at the exhaust ports, really clean, obviously black from exhaust though, no oil , no oil in intercooler pipes a guy on a local forum said it looked wet around the turbo shaft rear seal? |
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#4 |
RCC Addict
Join Date: Mar 2008
Location: Honolulu, Hawaii USA
Posts: 1,813
Rep Power: 19 ![]() |
No gasket on that part of the turbo.
Everything is machined friction fit. -Ted |
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#5 |
Rotary Fan in Training
Join Date: Jun 2012
Location: Gilbert, AZ
Posts: 52
Rep Power: 14 ![]() |
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#6 |
RCC Addict
Join Date: Mar 2008
Location: Honolulu, Hawaii USA
Posts: 1,813
Rep Power: 19 ![]() |
Torque them down till they stop and nothing moves...
![]() I know there are torque specs out there (you can use the ones for the generic Garrett T3/T04 turbos), but I find it very hard to get the head of a torque wrench into that space. If you happened to be able to torque them properly, the fact that they are 13mm bolt heads implies that torque should in the range of 20 - 40 lb./ft. Once you get the turbine housing off, you'll expose the turbine wheel. Right under the turbine wheel, you have a "cover" of sorts - this is the turbine heat shield. http://turbocharged.com/catalog/parts_list.html It is part #18 labeled here as "wheel shroud." If the turbo is leaking out out the turbine piston ring back there, you're going to find a lot of crust black stuff fall out when you "spin" that heat shield. This turbine heat shield is normally held into place when the turbine housing is bolt back in. Once the turbine housing is removed, this heat shield can move a little bit. If no oil is leaking back there, it's going to be pretty clean and no black, crusty bits will fall out when you shake it. Some tips... When you remove the 6 bolts holding the turbine wheel to the center housing, the turbine housing will most likely get stuck. Note that two of the bolts are lined up with the oil supply and drain flanges. Alternate backing these two bolts out evenly, and this will help "push" the turbine housing off the center housing. When removing the turbine housing, try to keep contact with the turbine wheel to a minimum. You can double-check this by spinning the wheels as you slowly remove the housing. Initially, you can tap the turbine housing with a hammer gently in a circle to help it come off. The turbine housing will be stubborn sometimes, and you'll feel like you're going to snap the bolts doing this, but I have never broken anything no matter how badly stuck everything is. When you put everything back, make sure these two bolts line up in the same position. It is important that the oil supply and drain flanges are vertically up and down. -Ted Last edited by RETed; 08-08-2012 at 05:12 AM. |
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