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  #1  
Old 05-19-2008, 03:44 PM
bgkast's Avatar
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VGT blowout on ebay

There is a gaggle of good deals on Garrett VGTs on ebay:
GT2256V $60

Liberty Turbo 1

Liberty Turbo 2

Liberty Turbo 3

The third Liberty turbo is the 35242115F version which is a GT2260V. Other than the vacuum actuator it seems to be exactly the same as the more common 35242112G model so I believe that all of the Jeep Liberty turbos are GT2260Vs!!

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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
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  #2  
Old 05-19-2008, 04:00 PM
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jeeze.. do I want to splurge and get a VGT... soooo tempting
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  #3  
Old 05-19-2008, 04:21 PM
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No excessive shaft play yet they all say that they are cores for rebuilding. Is he just covering his backside?
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  #4  
Old 05-19-2008, 04:24 PM
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probably
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  #5  
Old 05-19-2008, 04:31 PM
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Quote:
Originally Posted by Bajaman View Post
No excessive shaft play yet they all say that they are cores for rebuilding. Is he just covering his backside?
Yes. I got my turbo from him with the same description and it is in perfect shape.
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
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  #6  
Old 05-19-2008, 08:35 PM
ForcedInduction
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Yes. He has no history on the turbos so he always assumes they need work to be safe.
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  #7  
Old 05-19-2008, 08:39 PM
ForcedInduction
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Quote:
Originally Posted by bgkast View Post
The third Liberty turbo is the 35242115F version which is a GT2260V. Other than the vacuum actuator it seems to be exactly the same as the more common 35242112G model so I believe that all of the Jeep Liberty turbos are GT2260Vs!!
I doubt it. Notice the third one has a nut on the compressor wheel while the other two do not.
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  #8  
Old 05-19-2008, 09:04 PM
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I did miss that nut. The numbers cast into the housings and inlet and outlet sizes for the compressor and turbine seem to be identical though, so I definatly think they are the same size turbo.

I wonder how the shaft is held together on the other type.
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1979 240D- 316K miles - VGT Turbo, Intercooler, Stick Shift, Many Other Mods - Daily Driver

1982 300SD - 232K miles - Wife's Daily Driver

1986 560SL - Wife's red speed machine
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  #9  
Old 05-20-2008, 03:05 AM
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So are these direct bolt-ins for the stock turbo? My gut instinct makes me think not, but it sounds like you guys would be the ones to know.

Are these an upgrade over the stock units? Better design? Better tech? More efficient? Less lag? More boost? What?

Inquiring minds want to know. School me. Please.
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1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown
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  #10  
Old 05-20-2008, 03:22 AM
ForcedInduction
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Quote:
Originally Posted by rcounts View Post
So are these direct bolt-ins for the stock turbo?
There are only two direct bolt-ins for the engine, the stock T3 and K26 that Mercedes used on them.

Quote:
Are these an upgrade over the stock units?
Definitely yes.

Quote:
Better design?
Yes. The T3 series turbo is a 1970's design. These turbos are the more modern GT series which have the benefit of computers to help refine the design.

Quote:
Better tech?
Yes, the GT series is more simple and more reliable.

Quote:
More efficient?
Yes, the turbine and compressor wheels have much better aerodynamics to move air more efficiently.

Quote:
Less lag?
Hell yes! Thats the key to the VNT/VGT greatness. The vanes on the turbine side change the pitch and velocity of the exhaust gasses to act like a tiny turbo but flow like a big turbo. Kind of like putting your finger over the end of a garden hose.

Quote:
More boost?
Yes. The K26 turns into a heat pump at 14psi and the T3's efficiency peaks out around 20psi. Although they can go higher, their terrible efficiency at those pressures means it hurts performance rather than helping.

Quote:
What?
Its not easy to install one.

Adapter plate to mount to the exhaust manifold
Custom oil supply and drain lines
Adapting to the intake manifold
Adapting the exhaust pipe
Installing an adequate air filter system,
Controlling the vanes
and about a dozen other small details.
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  #11  
Old 05-20-2008, 03:37 AM
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Quote:
Originally Posted by ForcedInduction View Post
Yes. The K26 turns into a heat pump at 14psi and the T3's efficiency peaks out around 20psi. Although they can go higher, their terrible efficiency at those pressures means it hurts performance rather than helping.


Its not easy to install one.

Adapter plate to mount to the exhaust manifold
Custom oil supply and drain lines
Adapting to the intake manifold
Adapting the exhaust pipe
Installing an adequate air filter system,
Controlling the vanes
and about a dozen other small details.
Thanks for the info!

Since I have the T3 (which appears to be the better, more efficient of the two stock units), I think I'll leave it for the time being. I have several other simpler things I need to find time to bring back up to snuff before I get into anything radical like a custom install or max performance mods.

Once I have everything back up to par, and an EGT & boost gauge installed, then I'm thinking a simple wastegate pressure controller should do the trick for me. Since I'm more interested in economy - rather than flat out performance - I'm thinking the T3 will be able to give me all the boost I need.
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1984 300 Coupe TurboDiesel
Silver blue paint over navy blue interior
2nd owner & 2nd engine in an otherwise
99% original unmolested car
~210k miles on the clock

1986 Ford F250 4x4 Supercab
Charcoal & blue two tone paint over burgundy interior
Banks turbo, DRW, ZF-5 & SMF conversion
152k on the clock - actual mileage unknown
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  #12  
Old 05-20-2008, 06:44 AM
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The wastegate controller helps quite a bit in faster boost.
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1992 Mercedes 190D 2.5 turbo 5sp manual. EGT+boost gauges. Boost controller set to ~14.5 psi. 1 1/4 turns on full load adjustment. LPG injection. Next in the list is water injection.
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  #13  
Old 05-20-2008, 02:19 PM
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My boost controller failed, wont be using that again.
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  #14  
Old 05-21-2008, 08:42 AM
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I just noticed that the 60$ one has a different looking compressor geometry. Any idea what difference that would make? I'm assuming that would make for a vastly different pressure map.
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Last edited by Bajaman; 05-21-2008 at 11:05 AM.
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  #15  
Old 05-21-2008, 10:15 AM
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Quote:
Originally Posted by bgkast View Post
The third Liberty turbo is the 35242115F version which is a GT2260V. Other than the vacuum actuator it seems to be exactly the same as the more common 35242112G model so I believe that all of the Jeep Liberty turbos are GT2260Vs!!
I verified mine with Garrett employee as GT2059V. There are different flanges so who knows. But I know mine is what it is.

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1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42
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