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Go Back   IWSTI.com: Subaru WRX STI Forums > IWSTI Engine & Drivetrain > 2.5 Liter/Litre Factory Motor


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Old 08-02-2008, 08:28 PM   #1
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Default Is the Stock turbo a BB turbo?

What kind of turbo comes in the car stock? Does it have Ball Bearings?


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Old 08-02-2008, 08:43 PM   #2
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Default Re: Is the Stock turbo a BB turbo?

Yes. But over the years the turbos have changed slightly. I know '06 had vf-39 and 07 have vf-34..Why do you ask?
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Old 08-02-2008, 08:49 PM   #3
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Default Re: Is the Stock turbo a BB turbo?

Curiosity I guess
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Old 08-02-2008, 09:07 PM   #4
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Default Re: Is the Stock turbo a BB turbo?

No, the USDM VF39 from the 04-06 and VF43 from USDM 07 STi's are NOT ball bearing.
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Old 08-02-2008, 09:07 PM   #5
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Default Re: Is the Stock turbo a BB turbo?

VF22 Roller Bearing.
VF23 Ball Bearing.
VF27 Ball Bearing.
VF32 Ball Bearing.
VF34 Roller Bearing.
VF36 Ball Bearing.
VF42 Roller Bearing.
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Old 08-02-2008, 09:09 PM   #6
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Default Re: Is the Stock turbo a BB turbo?

Quote:
Originally Posted by mattjk View Post
VF22 Roller Bearing.
VF23 Ball Bearing.
VF27 Ball Bearing.
VF32 Ball Bearing.
VF34 Roller Bearing.
VF36 Ball Bearing.
VF42 Roller Bearing.
VF34 is ball bearing.
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Old 08-02-2008, 09:13 PM   #7
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Default Re: Is the Stock turbo a BB turbo?

^ Thats what I thought too. I only know about the vf-34. Thats why I'm not sure about the other years. I still don't get what the purpose of this is though..
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Old 08-02-2008, 09:23 PM   #8
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Default Re: Is the Stock turbo a BB turbo?

Quote:
Originally Posted by sujak View Post
No, the USDM VF39 from the 04-06 and VF43 from USDM 07 STi's are NOT ball bearing.
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Old 08-02-2008, 09:25 PM   #9
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Default Re: Is the Stock turbo a BB turbo?

Uh oh. This is gonna get confusing.
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Old 08-02-2008, 09:31 PM   #10
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Default Re: Is the Stock turbo a BB turbo?

Quote:
Originally Posted by sujak View Post
VF34 is ball bearing.
that's what I thought too, technically it's called a roller cartridge. but I guess in this case we'll call it ball. it is different from the roller in the vf22.
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Old 08-02-2008, 09:33 PM   #11
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Default Re: Is the Stock turbo a BB turbo?

Here they call it "floating metal" haha. Dug this up on google..

http://www.westminsterspeed.com/mrt_...odata20402.pdf
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Old 08-02-2008, 09:35 PM   #12
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Default Re: Is the Stock turbo a BB turbo?

Quote:
Originally Posted by tyler_sti View Post
Here they call it "floating metal" haha. Dug this up on google..

http://www.westminsterspeed.com/mrt_...odata20402.pdf
yeah, that one is actually old, and wrong. I remember looking at the thing back in 2002. lol

semantics though, both roller and ball are better than floating bushing!
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Old 08-02-2008, 09:36 PM   #13
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Default Re: Is the Stock turbo a BB turbo?

lol, well screw it. I don't know why it really matters in the first place anyhow.
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Old 08-02-2008, 09:41 PM   #14
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Default Re: Is the Stock turbo a BB turbo?

I asked ChaCha but no luck either
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Old 08-03-2008, 04:26 AM   #15
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Default Re: Is the Stock turbo a BB turbo?

Subaru Turbo List - NASIOC

Enjoy!


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Last edited by pisymbol; 08-03-2008 at 04:39 AM.
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