TD05H Big 16G Vs. TD05H Evo 3 Big 16G, Are there Major Differences?

VT_4G63 · Apr 12, 2024

I am looking at purchasing a used, good condition Genuine MHI Big 16G (Non Evo 3). However, I'm not sure I need it as I already own, but have not yet installed, a genuine MHI Evo 3 Big 16G and also an MHI small 16G. When I do make the upgrade from the 14B I'm currently running, it will be along with all the necessary supporting mods.

Is there any advantage to running the Big 16G (Non Evo 3) over the Evo 3 Big 16G? Is there a build scenario where that turbo would be preferable? Or does the Evo 3 Big 16G blow it out of the water and it wouldn't ever make sense to run the Big 16G over the Evo 3 Big 16G?

Justin DuBois · Apr 12, 2024

A real vs fake has more to do with reliability than performance.
The real exhaust turbine has high nickel content in the cast iron reducing the tendency for cracking, and the turbine shaft is likely to hold up longer, which will improve the chances to rebuild the components, vs throw them in the bin when they tap out.

VT_4G63 · Apr 12, 2024

Justin DuBois said:
A real vs fake has more to do with reliability than performance.
The real exhaust turbine has high nickel content in the cast iron reducing the tendency for cracking, and the turbine shaft is likely to hold up longer, which will improve the chances to rebuild the components, vs throw them in the bin when they tap out.

I totally agree, I always opt for real vs. fake.

Both the turbos I'm referring to in my original post are Genuine MHI, I'm wondering if there is any theoretical advantage of any sort to running the regular Big 16G as opposed to the Evo 3 16G? I already own the Evo 3, so if not, I would pass on purchasing the regular (Non Evo) Big 16G.

Justin DuBois · Apr 12, 2024

VT_4G63 said:
I totally agree, I always opt for real vs. fake.

Both the turbos I'm referring to in my original post are Genuine MHI, I'm wondering if there is any theoretical advantage of any sort to running the regular Big 16G as opposed to the Evo 3 16G? I already own the Evo 3, so if not, I would pass on purchasing the regular (Non Evo) Big 16G.

There are flavors of MHI Big16G. They are nearly identical. The number stamp on the compressor cover that completes the part number will give a clue where it came from - example “42” is from a typically from a Galant VR4, and “47” is from an Evo 3

https://www.dsmtuners.com/threads/td05h-turbo-part-numbers-14b-16g.313105/

idkiliketurbos · Apr 12, 2024

The most sought after model would be the MHI Evo 3 16g which would have the 47 serial number. Seems to be the best combination of airflow and boost threshold.

VT_4G63 · Apr 12, 2024

Justin DuBois said:
There are flavors of MHI Big16G. They are nearly identical. The number stamp on the compressor cover that completes the part number will give a clue where it came from - example “42” is from a typically from a Galant VR4, and “47” is from an Evo 3

https://www.dsmtuners.com/threads/td05h-turbo-part-numbers-14b-16g.313105/

Yeah I’ve had that thread bookmarked and I referenced it in the past when I was researching how to determine what turbo is what based on the numbers stamped on the compressor cover. That’s how I knew which model 16G each of these turbos was. “42” on the Big 16G, “47” on the Evo 3 16G, like you said.

So would it be fair to say these two turbos are nearly identical, and there is no real need to purchase the Big 16G when I already own the Evo 3 Big 16G?

idkiliketurbos · Apr 12, 2024

Definitely wouldn't be any reason to buy the "lesser" of the two if you already own the Evo 3 16g which would be the "better" option.

VT_4G63 · Apr 12, 2024

idkiliketurbos said:
Definitely wouldn't be any reason to buy the "lesser" of the two if you already own the Evo 3 16g which would be the "better" option.

Ok, I’ll save my money then.

Thank you both for the information and the help.

pauleyman · Apr 12, 2024

VT_4G63 said:
I am looking at purchasing a used, good condition Genuine MHI Big 16G (Non Evo 3). However, I'm not sure I need it as I already own, but have not yet installed, a genuine MHI Evo 3 Big 16G and also an MHI small 16G. When I do make the upgrade from the 14B I'm currently running, it will be along with all the necessary supporting mods.

Is there any advantage to running the Big 16G (Non Evo 3) over the Evo 3 Big 16G? Is there a build scenario where that turbo would be preferable? Or does the Evo 3 Big 16G blow it out of the water and it wouldn't ever make sense to run the Big 16G over the Evo 3 Big 16G?

For what it's worth there is "big 16g" and "evo3 16g" there is no "evo3 big 16g".

VT_4G63 · Apr 12, 2024

pauleyman said:
For what it's worth there is "big 16g" and "evo3 16g" there is no "evo3 big 16g".

Ok, the nomenclature you typed makes more sense and makes it easier to discern between the two.

I've seen the Evo 3 described that way in a couple other places over the years and I think it just stuck in my mind and I kept calling it that, even though it didn't seem right or necessary.

One of which was here:

EXTREME PSI : Your #1 Source for In Stock Performance Parts

DSMPT · Apr 12, 2024

When a EVO 3 16g comes with its O2 housing, it would make the difference more significant. The EVO 3 O2 housing has the largest outlet ID. (Keep in mind that the EVO O2 housing outlet flange has a slight different angle than DSM.)

1st-2nd pic : 14B O2 housing.
3rd-4th pic : EVO 1/2 16G O2 housing. The inlet ID is 7mm larger than DSM, the outlet ID is the same as DSM.
5th-6th pic : EVO 3 16G O2 housing. The inlet ID is the same as EVO 1/2, the outlet ID is 6mm larger than EVO 1/2.
7th-8th pic : 6cm vs 7cm turbine housing.

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Justin DuBois · Apr 12, 2024

DSMPT said:
When a EVO 3 16g comes with its O2 housing, it would make the difference more significant. The EVO 3 O2 housing has the largest outlet ID. (Keep in mind that the EVO O2 housing outlet flange has a slight different angle than DSM.)

1st-2nd pic : 14B O2 housing.
3rd-4th pic : EVO 1/2 16G O2 housing. The inlet ID is 7mm larger than DSM, the outlet ID is the same as DSM.
5th-6th pic : EVO 3 16G O2 housing. The inlet ID is the same as EVO 1/2, the outlet ID is 6mm larger than EVO 1/2.
7th-8th pic : 6cm vs 7cm turbine housing.
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When you look at how the chambers of the turbine housing mate up to the o2 housing, it becomes clear why a 2G DSM o2 housing (even after porting) is a compromise. Big16G, or E3 16G mates best with the E3 o2 housing. When I finally got my hands on a E3 o2 housing it was easy to justify having the down-pipe flange modified.

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TD05H Big 16G Vs. TD05H Evo 3 Big 16G, Are there Major Differences?

VT_4G63

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Justin DuBois

idkiliketurbos

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VT_4G63

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