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Questions about Garrett GT4088 Turbo

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Old Oct 9, 2006 | 04:16 PM
  #1  
pistonsuk's Avatar
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Questions about Garrett GT4088 Turbo

Okay if anyone knows then please chime in:

I'm in the market for a new/used Garrett Non-BB GT4088 with 1.34A/R hot side (not the T-series hybrid with the 1.06 hotside). If you have one for sale or had a good experience with a vendor let me know.

What is the exhaust outlet flange design? I have heard both a cast in 3" v-band (if so will this work with my old t-series 3" v-band clamp and dp flange?) and a 6-bolt flange? What is on this turbo?

I am almost positive, but is the turbine inlet divided on this t-hsg and A/R?

Thanks,
Justin
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Old Oct 10, 2006 | 06:29 PM
  #2  
ronbros3's Avatar
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From: Austin TX.
GT 4085 non BB

I have a GT 4085 took it apart and measured everything, 68 mm inlet housing 85 mm wheel dia. cold side, turbine wheel about in the middle between a P wheel and a Qwheel, .95 split housing T-4 flange 3.5 V band, i exit out to a 4" D/P. but i cant sell it!! SORRY
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Old Oct 12, 2006 | 03:55 PM
  #3  
pistonsuk's Avatar
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It showed up!

Okay, I ordered my turbo from a diesel injection shop. I was told that the Non-BB GT4088 w/ 1.34 A/R was a Garrett PN 703457-5002.

Can anyone verify this?

Everything looks right, but the turbine minor diameter is 2.775inch (71mm) and the Major is 3.075" (78mm). I have a spreadsheet I found online that says it should be 2.547" (65mm) and 3.031" (77mm)?

Anyone with a GT4088 Non-BB measure their turbine wheel?

Justin
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Old Oct 12, 2006 | 06:01 PM
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From: Lancaster, NY
I have the GT4088 non-bb with the 1.06 hotside, i'm finally going to fire the car up this weekend after a rebuild for the first time, i'll let you know how the turbo works out once the new motor is broken in.
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