[yrktreg]

That's always an option, darkside makes some nice stuff.

I'm guessing for the GTD2060 if utilizing the stock GTB2056 housing, add in a used TD turbo, and having it rebuilt would roughly be $1000

 

[yrktreg]

Sure, what are you looking for?

I have a GTD2263, so slightly different that the GTD2060.

Turbo_______Comp Ind__Comp Exd__Extended Tip__Blades__A.R__Turbine In__Turbine Ex
GTD2263VZ____44.5_____63.1______66.9_________6+6__54____50.1_______42.9
GTD2060VZ____42.9_____60_______62.1_________10____60____47_________42.7

 

[yrktreg]

The only machining on the GTB housing is for make a place for the mounting "plate" that holds the VNT assembly in place. A new mounting plate will also be needed but I think I have a place that can water jet some SS310 for the job.

The rest of the GTB housing is fine

The plate has the red arrow in it at 54-56 seconds

 

[yrktreg]

Why do I have the feeling I'm going to have to PayPal yrktreg a bunch of money again ?

LOL! I'm not sure it's going to be me on this one.

 

[yrktreg]

For the mounting plate, looking at the video the tolerances look tight. From the perspective of heat cycles and expansion/contraction, do you need to use the same material as the turbine housing or a specific grade of stainless steel?

The tolerances are ridiculously loose to allow for expansion. Like 1/8" loose :grin2:

But yes a material has been selected that is heat resistant up to 1150 C.

 

[yrktreg]

So is this the start of a group buy?


Also can the balancing shop data log the compressor and produce a map (or provide data that we can produce a compressor map).


I'm interested if you're seriously going to build this thing.

I'm not sure if I want to do a group buy.

My original thoughts were to just come up with something the concept that everyone could share.

But I guess that not everyone has the means to get it modified

 

[yrktreg]

Are you reusing the GTB electronic actuator or are you swapping over the GTD one?

Yes reusing the stock GTB actuator is the plan. Literally looking for plug and play

 

[yrktreg]

Yes I remeber reading something about this as well.

IIRC you can do it with VCDS. It learns the allowable travel limits IIRC.

 

[yrktreg]

It looks to me like the mounting plate has a jiggle in it (51 seconds). Probably waterjet a piece of SS308 or SS410. If I remember correctly the unison ring made by an aftermarket company was EDMcut from SS410. SS308 or 316 would probably work.

How tight is the fit? The housings are probably nickel iron castings. And if the fit isn’t tight thermal expansion may not be an issue. Otherwise find out the original material they use. There are some places nearby that have metal analysis equipment.

As posted above there is at least 1/8" of tolerances.

Was thinking SS310 to be honest.

Housings are Inconel as is the turbine wheel.

 

[yrktreg]

No thanks.

There is a difference between 310 and the others. Coeffficient of thermal expansion is different between 310 and 410 due to different nickel content. Really not sure why 310 when last I looked 304 is the most common.

https://www.discountsteel.com/items/Stainless_Steel_Plate.cfm

https://www.metalsdepot.com/stainless-steel-products/stainless-plate-304

They can laser cut or waterjet and send to your door.

304 temp is "only" 925 C, i'm not comfortable with 50-75 C error of margin depending how far the envelope is pushed. 310 is 1150 C which has plenty of error for margin.

410 is no bueno at 705 C

 

[yrktreg]

Margin on what? Tensile? Yield? Modulus?

If you’re worried go with 316, inconel or A-286.

I doubt the housings are anything more tha 316. Most likely iron nickel alloy. If they are inconel then use A-286 or Inconel 625 (it’s made in Reading).

But it’s probably better to get the Garrett material analyized to see what it is. I doubt it’s anything more than 410/430 or 316.

..... my opinion

Margin on the max continuous service temperatures.

Garret is also using cost affective measure to try and save a buck or two here and there.

Again i'd rather be safe for MY turbo, you can do what you want for your own :wink2:

 

[yrktreg]

Fair enough. Good luck. I’ll be anxious to order an adapter from you so I can build one of these hybrids....

:wink2:

 

[yrktreg]

More disassembly going on right now :wink2:

 

[yrktreg]

Pics or it didn't happen :grin2:

I see what you did there :grin2:

Give me an hour or three, anything special you want to see?

 

[yrktreg]

OK here you go folks...

GTD guts inside of a GTB houing...

Note not all components are in place as there still needs to be machine work done.

So...
1st pic is of GTD turbine and compressor wheel in GTB CHRA. GTB turbine/ compressor below...
2nd is GTB turbine and larger than stock MFS GTB compressor wheel (upgrade from stock)
3rd is GTD compressor (TiAL) in GTB CHRA
4th is GTD VNT ASSY over GTD turbine in GTB CHRA
5th is another shot of 4
6th is GTB turbine housing over #4
7th is GTB top vs GTD bottom
8th is GTD compressor left vs GTB compressor right
And the 9th pic is GTB turbine left vs GTD turbine right

 

[yrktreg]

SECONDED

Yeah yeah yea :grin2::grin2::grin2::grin2:

 

[yrktreg]

I'm going to weigh the GTB vs GTD turbine and compressors tomorrow at the post office.

 

[yrktreg]

Hard to tell from the pic but your shaft looks like a problem.... what's the plan to address that?

No problem, the GTD has a hair more surface area for Z bearing, same diameter as GTB.

They both use the same Z bearing so no issues :wink2:

In the one pic I don't have the GTD compressor wheel on the turbine shaft the entire way...

 

[yrktreg]

Score on the Z

LOL Yes!

OK so after much deliberation I think that honestly the entire GTD turbo isn't needed.

Honestly we would only be using the turbine, compressor wheel, and GTD VNT assembly from the GTD anyway.
But I needed one to disassemble and see the inner workings first hand, and take measurements, etc...

SOOooo I already have a source for new GTD VNT assemblies, and have found suitable turbine and compressor wheels.

I can have the VNT assembly modified by a CT member so that it works with the GTB turbine housing.

The only other things that would needed modified are a locating pin added to the GTB CHRA, and the GTB compressor housing modified for the larger compressor wheel.
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Discuss :wink2: