Turbonetics turbo id

[2gDSM420a]

OK i searched for the numbers i got off the Turbonetics turbo both in Google and on here and even Turbonetics website and found nothing, I'm hoping u guys could help me out. I don't know much of anything about turbos so please forgive me if i sound retarded

on a little plate on the blue backing of the cold side is the number t-12728 there is also a 0358-03 and 63 stg 3 and lot 29 on the hot side where the down-pipe bolts up, also a 30432 and e-80 on the lip of the housing on the cold side. any ideas? how do i tell if its a t3 or t4 or t05 or whatever, its all Greek to me at this point, but I am trying to learn Greek.

here are some pics, hopefully they help id it

Sean's Eclipse - Photo 5 of 9
Sean's Eclipse - Photo 6 of 9
Sean's Eclipse - Photo 7 of 9

also i discovered there are some internals that are gonna need replaced, most likely bearings, because there is an awful lot of up/down play and even a small amount of in/out play too. for someone with no working knowledge of turbos but yet moderate mechanical skills, assisted by someone with over 30yrs mechanical experience (albeit motorcycle and American muscle) how would you rate the tear-down cleaning repairing and reassembly difficulty on scale of 1-10.

Thanks again guys i sure do appreciate it
Sean



oops, hope the honda manual in pic 7 of 9 doesn't confuse ya, this isn't for my honda !

 

[darkhorizon]

Measurements are key here, but looks to me like a 50 trim, but I cant know the size without measurements. I know its not a 60-1 though!

 

[JusMX141]

Looks like a 50-trim with a T31 turbine, T3 turbine inlet and the popular Garrett 5-bolt outlet. Again, only measurements will tell the tale.

I'd say on a scale of 1-10 for turbo rebuilding, Garrett's (this includes Turbonetics and Precision turbos) are around a 6.5. I have a whole rebuild instruction that I'm planning on listing in the Tech articles for a PTE 6031E, although I have to type the tutorial yet. Should be up in a week or so if you can wait that long.

 

[2gDSM420a]

what do u need measurements from? ill get ya some

 

[JusMX141]

Compressor inducer / exducer, and turbine inducer / exducer. Could be inches or millimeters.

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[2gDSM420a]

Compressor exducer 3.189in. inducer 2.235in.

Turbine exducer 2.214in. inducer 2.555in.

would a t3/t4 turbo rebuild kit work with this turbo?

 

[JusMX141]

Definitely a T31 turbine, but the compressor wheel specs are a little unclear....

50-trim: 2.122" in. / 3.000" ex.
54-trim: 2.170" in. / 2.950" ex.
57-trim: 2.230" in. / 2.950" ex.
60-trim: 2.290" in. / 2.950" ex.

By the inducer it could be a 57-trim, but your exducer measurement is a bit off.


Generally speaking, a T3 rebuild kit will freshen up this turbo....but companies like Turbonetics and Precision sometimes use special thrust plates featuring recessed mounting screws that you can only buy from them unless you're bold enough to attempt to modify one on your own. Otherwise, the journal bearings, clips, turbine seal, and compressor seal are all the same.

 

[2gDSM420a]

could the screwy measurements be sign of damage and if i were to replace this wheel what trim would u recommend that would have 25psi/350whp potential for my built 420a?

 

[JusMX141]

Shaft play will normally damage the compressor inducer, so in the event that the wheel hit the housings the inducer measurement would be less than spec. Normally you can spot if the wheel hit the housing fairly easily.

You'll need to swap compressor covers or have your cover machined if you decide to change wheels.

 

[Turb07]

Compressor exducer 3.189in. inducer 2.235in.

Turbine exducer 2.214in. inducer 2.555in.

would a t3/t4 turbo rebuild kit work with this turbo?

You have a TO4E/T3 with a Super 57 Compressor wheel and a Stage 3 turbine wheel!

Comp wheel inducer 2.230
Comp wheel exducer 3.20

Turbine wheel inducer 2.555
Turbine wheel exducer 2.227

Also from the pictures i saw you will need to make sure and remove the broken stud in the turbine housing!

just my $.02

Turbo

 

[2gDSM420a]

is this standard shaft unit outdated and not worth the rebuild in your honest opinion and is there a way to get around the special thrust plates featuring recessed mounting screws? use a different center assembly and shaft or maybe a mod that can be done, because according to the turbonetics owners forum they stopped making replacement parts for standard shaft units quite some time ago. would i just be better off investing in a new turbo all together?