Looking for some help identifying this turbo that I have. It's obviously a Garrett, 0.51 intake, 0.60 exhaust as you can see in the pictures. Unfortunately it's missing the identification plate so I don't have a manufacturer part #. I believe this to be a T3 or T04B from what little info I can find but I could be wrong.



Anyway, trying to figure out exactly what model this is and/or what car it came off of? Any information/help would be appreciated. Thanks,

- Jordan

 

I would pull both housings off and measure the inducer and exducer of both wheels using a 6" dial caliper, then post the results. This will help greatly in finding out what it is.

 

Definitely not a t04b. That's a straight t3. Looks like a 40 or 42 trim compressor wheel which means it's too small to make even the lowest of power goals on a honda motor. You'll have low end and some midrange but it will probably start to choke by 5000rpm

Not to mention these turbos have an insanely small turbine wheel in a very small ar turbine housing

Looking at the turbine housing closely given its volute design and size plus the way the inlet flange looks it might be a t25 flanged turbine housing

We need pics of the turbine inlet flange with measurements of the bolt holes, center to center. Plus overall images of both housings, the center section, and wheels. As well as pics of both wheels and their measurements (inducer exducer) and these must be done with a set of calipers to get an accurate measurement

Is there a tag anywhere on the turbo with a part number/id number

What is this going on?

 

And turbos this small are normally internally wastegated, because that looks like an internally wastegated turbine housing but it isn't. Which is a dead giveaway that this turbo came off of some sort of small displacement diesel motor

 

Still a T04B compressor cover.

 

Hard to say, I know that housing is dimensionally the size of a straight t3 compressor housing... I can tell because I know how wide those wooden floors are.

If it is an earlier, smaller version of todays t04b cover then that is a definite possibility buut that is not a t04b compressor wheel. seeing as how we don't even have an image of the turbine wheel or any measurements or detail photos, every post is basically pissing into the wind lol

 

I can agree with that. T04b housing with some T3 unbornunknown wheel

 

Wow, thanks for the help guys, didn't realize there was more than the first reply. Anyway, here's some measurements of both wheels. Might help shed some more light.



Exhaust/Hot side measures 52 mm (lower part) and ~36mm diameter (upper part) for the turbine wheels as seen in these pics:



Intake/Cold side measures 45.5 mm (lower part) and 39.6 mm diameter (upper part) for the turbine wheels as seen in these pics:



To answer the questions, I'm not putting this on anything, just trying to sell it but I don't know any details about it to provide to prospective buyers.

Any ideas of what this would have come off of? Power levels (i know this is dependent on a lot of other things)? Any other measurements that would help?

Thanks again,
- Jordan

 

You've got the measurements backwards

The 36mm/52mm (inducer/exducer) measurement is the compressor wheel
The 45.5mm/39.6mm (inducer/exducer) measurement is the turbine wheel

I cannot find any info on the turbine wheel
The only compressor wheel that has the same measurements belongs to a GT1752 but this clearly is not a GT1752

the GT1752 compressor wheel (simply for comparison, I'll have to look at my 1752 to confirm wheel profiles) has a maximum airflow of 26lb/min and that is at the absolute limit. That means 260 flywheel hp max, you'd be looking at 225ish as a realistic wheel hp limit but the turbine side is too small to go on any honda motor really... except for maybe the smallest of non-vtec sohc motors.

The measurements and housings definitely confirm (at least for me) that this was a turbo that came off of a small diesel generator motor, designed to run at a single rpm/load point constantly... the large turbine housing also confirms this as the motor mfg. would use turbine wheel size as well as turbine housing size to limit boost pressure... negating the need for a wastegate of any kind

And as you don't have the data plate there really isn't much more we can tell you unless TheShodan has access to some older diesel related AiResearch/Garrett/Honeywell documentation

 

And now that I can see the backside of the compressor housing, I can tell you it is NOT a T04B housing.. The diffuser size, as well as overall housing size and the outlets proximity to the main housing body, as well as the 6 evenly spaced retention plate bolt holes says this is a straight T3 compressor housing...

The reason it looks like a T04B is that it still has a 3" inlet and a T04B looking inlet... but now that we know the wheel size we know that they cast the housing this way so they could run the small wheel in a small housing and still keep a 3" inlet (not sure why as that turbo would be perfectly fine with a much smaller inlet)