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Size Matters- Turbo Oil Restrictor Sizing

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Old 12-14-2004, 03:27 PM
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DO NOT DO THE .03 TURBO RESTRICTORS!!!!!!!!!!!!!!!!!!!!!!!!!



i just lost both turbo bearings after 165 miles w the .03 sized restrictors. JD was, in retrospect, right on the money as to them being too small. i will probably go w .05 after they have had a trip to Waco...



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Old 12-14-2004, 06:09 PM
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So what is the correct size for a T04R?
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Old 12-15-2004, 08:10 AM
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Originally Posted by Dysfnctnl85' date='Dec 14 2004, 07:09 PM
So what is the correct size for a T04R?

Yea I want to know that one too!
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Old 12-16-2004, 09:13 AM
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Any progress on this?
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Old 12-16-2004, 11:10 AM
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Anyone remember what the apexi turbo restriction size is? I remember it was tiny.
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Old 12-16-2004, 11:24 AM
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FWIW, ATPTurbo.com lists the T4 restrictor as .06:



Oil Restrictor
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Old 12-17-2004, 09:51 AM
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1.5mm or a hair under .06 is what I use on everything garret that needs a restrictor on a rotary and seems to be ideal. I have used up to 2.0mm without any big problems on your typical rotary, the only difference being that when the seals are close to being totally dead the turbo starts smoking earlier the bigger the restrictor.



HKaSs (garret) kits for rotaries come with a 1.5mm restrictor. HKaSs (garret) kits for piston engines come with a 1.8mm restrictor. Rotaries tend to run higher oil pressure than most piston motors.
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Old 12-18-2004, 01:20 AM
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Originally Posted by IGY' date='Dec 17 2004, 10:51 AM
1.5mm or a hair under .06 is what I use on everything garret that needs a restrictor on a rotary and seems to be ideal. I have used up to 2.0mm without any big problems on your typical rotary, the only difference being that when the seals are close to being totally dead the turbo starts smoking earlier the bigger the restrictor.



HKaSs (garret) kits for rotaries come with a 1.5mm restrictor. HKaSs (garret) kits for piston engines come with a 1.8mm restrictor. Rotaries tend to run higher oil pressure than most piston motors.



I went ahead and ordered the .06, trusting that ATPTurbo knew what they were talking about. Hopefully I'll be okay!
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Old 12-18-2004, 08:15 AM
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Originally Posted by 94touring' date='Dec 16 2004, 12:10 PM
Anyone remember what the apexi turbo restriction size is? I remember it was tiny.



i cant remember but it was small! and the only place i could get it was apexi japan. when i take my car apart next time i will measure it.
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