telemekas
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Posts posted by telemekas
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VF13/14 BG5A GT BG5A Legacy Auto and manual EJ20H (MY93-MY95)
VF16/17
VF18/19 BG5B GTB M/T BG5B Legacy GTB manual EJ20R (MY96)
VF20/21 BG5B GTB A/T BG5 Legacy GTB Auto EJ20H S2VF25/27 BE5/BH5 Rev A-C A/T BH5A/B Legacy GT/GTB auto EJ206
VF26/27 BE5/BH5 Rev A-C M/T BH5A/B GT/GTB Auto and manual EJ206/8
VF31/32 GTB ETune wagon
VF33/32 BE5 Rev D BH5/BE5C/D legacy GTB/RSK EJ206/8Turbo OEM Fitted To Compressor Housing Exhaust Housing CFM Rating Bearing Type Notes
VF13 IHI BG5A Legacy Auto and manual EJ20H (MY93-MY95) P16 BB Primary Turbo
VF14 IHI BG5A Legacy Auto and manual EJ20H (MY93-MY95) P16 BB Secondary Turbo
VF16 IHI P16 BB Primary Turbo
VF17 IHI P18 BB Secondary
VF18 IHI BG5B Legacy GTB manual EJ20R (MY96) P16 BB Primary Turbo
VF19 IHI BG5B Legacy GTB manual EJ20R (MY96) P18 BB Secondary Turbo
VF20 IHI BG5 Legacy GTB Auto EJ20H S2 P16 BB Primary
VF21 IHI P18 BB Secondary
VF25 IHI BH5A/B Legacy GT/GTB auto EJ206 P12 SL Primary Turbo
VF26 IHI P14 SL Primary
VF27 IHI BH5A/B GT/GTB Auto and manual EJ206/8 P18 BB Secondary Turbo
VF31 IHI P11 BB Primary
VF32 IHI BH5/BE5C/D legacy GTB/RSK EJ206/8 P18 BB Secondary Turbo
VF33 IHI BH5D/BE5D legacy GTB/RSK EJ206/8 P11 SL Primary Turbo
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VF16/17 combo.
Both with waste gates as the VF13/14 pair.
They have the same size wheel sets as the VF20/21
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The Perrin AOS I have had on the car since March 2010.
No plastic fittings? No leaks.
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Perrin AOS
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ZSSC can switch between reading boost or rpm. No boost control.Therefore no clash with AVCR
The ZSSC gives you the ability to raise the rpm switch points (within in a given rpm range).
Single turbo --switch point--> Twin turbo mode (later)
Twin turbo --switch point-> Single turbo mode (earlier)
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ECV = Exhaust Control Valve
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The IACV opens early on these cars.
If you place a 0.8mm pill in line No:1 to the IACV. This will improve the transition.
Read "Inside the BBOD" for details
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The VF30 non BB turbo (sleeve) same turbine wheel (9400) and P18 turbine housing. Does have slightly larger compressor wheel 46.5/60mm.
The VF23-24-28-29 have 45.4/60mm compressor.
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The VF23-24-28-29 are BB turbos use the the same size compressor wheel and 11 blade turbine wheel. The VF23 has a P20 exhaust housing A/R while the rest have P18.
The code on your exhaust housing is H4 for P18. H3 for P20.
The turbine wheel has been cut back at the exducer which improves exhaust flow and improves top end power but reduces efficiency and consequently spool up.
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Green connectors and the 4 plug White block which requires 2 bridges.
http://www.scoobypedia.co.uk/index.php/Knowledge/ConnectingToYourECU#toc4
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The VF25/26/27 use 6200 ( 8 blade- cut back) turbine wheel.
The VF13/16/17/18/19/20/21/31/32/33 use 4600 (9 blade -36mm exducer) turbine wheel.
The VF14 uses 5700 (9 blade- 39mm exducer) turbine wheel.
So you can only directly interchange turbine housings that use the same turbine wheel.
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Yes the VF33 compressor side (Inducer 60mm/Exducer 50mm) is an exception to all the other TT turbos (46mm/36mm)
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B136(24p) pin 9
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"The VF27 has no Waste Gate but the VF19 does, afaik. Someone will clarify."
Secondary turbo waste gates only on the series I VF14 and VF17 turbos.
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The VF18/19 are almost equal turbos.The only difference is the exhaust housings P16/P18.
The exhaust flow being common to both turbos you would only need one wastegate.
If the exhaust was divorced ie Syms Parallel headers or front cross over pipe removed (CTS parallel twin turbo kit), then wastegate on the secondary would be required.
The exhaust housing from a VF17 which has a waste gate would be a direct swap to the VF19
ECV is very narrow and convoluted thus restricting exhaust flow to the secondary turbo.
Obtain another ECV and turn it into an up pipe (remove the valve flapper, port valve seat area and weld the arm) I have done this a few times when locating a new ECV post turbo.
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The VF25/26/33 are journal/sleeve bearing turbos.
All the other TT turbos VF13/14/16/17/18/19/20/21/27/31/32 are ball bearing (twin ball bearing races)
Top flow turbo combinations VF26/27 and PE1016F/1018F (VF31 with P16 turbine/VF32) Rated [email protected]/cm2-5800 rpm,
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YES
"I have both in my garage and I\'ve taken them apart. The VF38 has a twinscroll exhaust housing and a slightly different compressor housing in comparison to the VF40, and it has a titanium turbine wheel as well. As for dimensions (inducer-exducer) for their compressors and turbine wheels, they are exactly the same. So you could go ahead and use the CHRA (center housing rotating assy) "center section" with the VF40 housings and it would bolt right up no problem. Hope this helps clear this matter for you."
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Excellent work ;D
On reading the post I was surprised how soon the IACV opened.
I always believed the IACV opened when the primary boost and secondary boost where equal.
I assumed the pressure difference would be zero and the output voltage (OV) would be 2.0 as per Subaru literature etc.
See pages 12- 13 on switching to twin charging.
http://www.veloce.pwp.blueyonder.co.uk/Twin%20Turbo%20Operation/ttopprt2.htm
However this is not the reality as you have shown
I have checked the ECU maps on several TTs including the lastest S401.
The IACV opening threshold is set between -7.3psi (0.86 OV) and -1.16psi (1.82 OV) pressure difference.
This can be easily modified in the ECU map (tunable ECU) to get OV of 2.0
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PM sent regarding VF12 forsale AU $70
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The twinscroll turbine housing in this context is used as away of generating a smaller intial A/R on a big turbo.
Like a VNT/VGT turbo. This would not be as finely variable as those turbos but more like a step across.
For interest:
http://www.supraforums.com/forum/showthread.php?742098-Kevin-s-Divided-Manifold-Quick-Spool-Valve
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Subaru Exiga GT (2009) - what turbo is it?
in General Vehicle Discussion
Posted
The turbo can be rebuilt.
or buy a new Core CHRA
TF035HM-14T