14b vs 16g turbine wheels

[rpg_dog]

I recently blew a my evo 3 16g and destroyed the center housing so I bought a blown 14b to steal the CHRA from, and I notice that the hotside turbine wheels are pretty different. They have the same inducer size, but the 14b's wheel has a larger exducer, thinner fins, and weighs about 4 grams less. The threading on the end of the 14b for the compressor wheel is standard threaded, while the 16g is reverse threaded, and the bottom of the turbine wheel of the 14b is flat, while the 16g's wheel has a slight taper on the outside where the fins are (like the compressor wheel). It seems logical that the 16g wheel is newer, therfore more efficient, however with the 14b's wheel having a larger exducer and less weight, so less rotating mass, it should be the better option, apart from being standard threaded... So my question is, which one is the better option? Will the larger exducer show less spool time?

 

[Steve93Talon]

14b and any variant of a 16g use the same TD05H turbine wheel. Not sure what you've got going on there.

 

[4Lurker4]

14b and any variant of a 16g use the same TD05H turbine wheel. Not sure what you've got going on there.

x2, I've rebuilt a coupe of these, same wheel for both. Could it be that maybe the used 14b had wear (from use) the other did not?

 

[rpg_dog]

Well mine are definantly different. I read in the another thread that some 14b locknuts were left-threaded and some were right, so it seems reasonable to assume that some were different. Or there is always the chance that this 14b had been modified, but judging from its condition I don't think that is likely. Here are a couple pics, any way to tell what this wheel is from?

 

[2deep]

Clipped turbine wheel?

 

[agentorange313]

Well mine are definantly different. I read in the another thread that some 14b locknuts were left-threaded and some were right, so it seems reasonable to assume that some were different. Or there is always the chance that this 14b had been modified, but judging from its condition I don't think that is likely. Here are a couple pics, any way to tell what this wheel is from?

The best way to know what turbine wheel you have is the measure the inducer and the exducer and cross reference, also the number of blades help determine what wheel it is. Heres a picture of what you need to measure, notice how both the compressor and turbine wheel have an inducer and exducer.

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Clipped turbine wheel?

Why even post then if you dont know? Neither look clipped.

But I bet Jus can just tell you which is which by glancing at it, I would say one is td05 and one wheel is a 12 blade td06h.

 

[Bud92gsx]

All 14b, and 16g's use the same turbine wheel.It has to be a 20g tdo6 turbine wheel.But justin will be able to tell you in 2 seconds, unless you want measure it.

 

[JusMX141]

TD05 vs. TD05H, perhaps?

For some reason it appears your 14B had the wrong turbine wheel, or the exducer tips got mowed down from some insane shaft play....which is highly likely as the turbine seal groove is completely worn away on the 14B turbine wheel. I'd imagine the center housing is junk as well.

 

[Dsmkauai]

Not sure if this helps or matters, but I noticed that under the wheels the oil seal area looks different between the two. I don't know maybe nothing but might help identify them better. Could one possibly be out of an eBay turbo.

 

[skatershawn]

Not that it matters to this thread at all at the moment, but the picture you posted, agentorange313, seems to be a bit wrong. The way the blades are positioned, is not correct. Thought it was a bit odd for a sec. But I do like how it labels what needs to be! Its a good diagram. (minus the error)

Not sure if this helps or matters, but I noticed that under the wheels the oil seal area looks different between the two. I don't know maybe nothing but might help identify them better. Could one possibly be out of an eBay turbo.

And yes I noticed that also, but i'm sure the other turbo pro's that looked at it would have brought it up if they thought something more of it.

 

[blakktalon]

It wouldnt be a 13g wheel would it?

 

[rpg_dog]

I'm pretty sure the oil seals only look different because the 16g blew and rubbed against the center housing. The smaller one(left) is the one I pulled out of the evo 3 16g, it looks to be of better quality, the fins all appear machined and in no way worn down, or even chipped, but the seal lip is worn. So it seems that my 16g turbine wheel was either unique or modified at some point in its life, I wonder which one is more efficient.. I guess I'll just use the one from the 14b and put it in the 7cm exhaust housing. Does it matter that the threading for the nut on the compressor side isn't reverse threaded? Should I just put some locktite on it and call it good?

 

[JusMX141]

Ah, then I had them backwards.

The Evo III turbine wheel rubbed the shit out of the housing, and now the blades are much shorter. The center housing is also dead as a result. I'm sure the compressor is worn as well and doesn't fit the housing nearly as tight as it should.

You may end up rebuilding the 14B and using it in the 7cm turbine housing.

 

[hereitcomes]

Im not sure what I originally posted. Pardon the confusion.