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Thats a little too general. Unlike the VF series, Mitsu turbos list a little more information in the full turbo part number.

TD04/05H generally refers to the center section and turbine wheel. You need a compressor wheel to get a good idea of what the turbo will do.

For instance the stock turbo is a TD04-13G.

Some common TD05 setups include the TD05-14B, TD05-16G, and TD05-20G.
 

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Discussion Starter · #6 ·
thanks for the info guys. The turbos are all off Impreza's.
I'm still waiting on an email for more info, but the TD05H is off a '94 Type C Spec RA STi (275ps/6500rpm torque 32.5kg-m/4000rpm @ 11psi). I believe this has a 12-fin compressor. So is that a 16G? I can't find any more info...:(
 

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20G

Is a 20G a turbo that will install fairly easily compared to a VF upgrade, or are there a long list of precautions, a few of my dsm buddys run them at crazy psi, but i realize that 15.5 psi is all that my subie will put up with... any thoughts, i dont want to waste money on a turbo i wont be happy with... Jason
 

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Discussion Starter · #11 ·
Great info guys! For the TD05H, I've read that it's 505 cfm at 15psi. I know that DSMs run this turbo at 20+psi, but could the EJ20 handle that much induction? What's the cfm on the VF30/34? This is also the same turbo used in the HKS upgrades! Just curious. Oh yeah, are these direct bolt on's for the WRX?

The reason why I'm looking at the Garrets is because of the number of rebuilders locally. The IHI turbos aren't also rebuildable are they?
 

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Re: 20G

Blackrex03 said:
Never heard of anyone with this setup or a 16G setup on a wrx
^^^^^^ That would be me. ;)
FWIW, my car (lil' 16G) ran 111 mph with 16 psi; It makes full boost @ 3400 in first, so unless you're looking for max peak power, I'd stay away from the 20G. I was told the lil' 16G gets more efficient from 17-20psi, but I've yet to tune for that. FYI:

Stock Turbo 360CFM at 14.7PSI
AVO 320HP 429CFM at 17.5PSI
IHI VF-22 435CFM at 18.0PSI
Small 16G 505CFM at 14.7PSI
Large 16G 550CFM at 14.7PSI
AVO 400HP 572CFM at 17.5PSI
18G 600CFM at 14.7PSI
20G 650CFM at 14.7PSI
AVO 450HP 630CFM at 20.0PSI
AVO 500HP 740CFM at 23.0PSI
 

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Discussion Starter · #13 ·
Great info man! I'm curious to hear about your mods too! Oh, was the TD05H-16 a direct bolt on? The Japanese newsgroups say that it's a ridiculous whistler, which is what I want!
 

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Mods

206WRX_GDA said:
Great info man! I'm curious to hear about your mods too! Oh, was the TD05H-16 a direct bolt on? The Japanese newsgroups say that it's a ridiculous whistler, which is what I want!
Mods:
TXS turbo-back w/ Prodrive axle-back
K&N, Samcos, Zerosports intake
Godspeed uppipe
UTEC
Perrin rails, Sti injectors, Walbro 255HP
Turbo Specialties WRX custom 16G

As far as "bolt on"...yes, but you'll need to modify the oil line, and use a larger WG solenoid/actuator. If you go through Reed @ Turbo Specialties, he'll fix you up. (~$1100) I like it far better than the "alternatives" I've experienced. Good luck to you! :)
 

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Re: Re: 20G


Stock Turbo 360CFM at 14.7PSI
AVO 320HP 429CFM at 17.5PSI
IHI VF-22 435CFM at 18.0PSI
Small 16G 505CFM at 14.7PSI
Large 16G 550CFM at 14.7PSI
AVO 400HP 572CFM at 17.5PSI
18G 600CFM at 14.7PSI
20G 650CFM at 14.7PSI
AVO 450HP 630CFM at 20.0PSI
AVO 500HP 740CFM at 23.0PSI [/B]


Where did you get this info, particularly the VF22 info. Seems off (VF22).
 

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I'd have to agree with TypeC; there is no way in hell the stock turbo is flowing 360CFM at 14.7psi if the VF22 is only pushing 435CFM at 18psi. Anyone who has seen the two compressors side-by-side should know what I'm talking about.

One of those numbers is wrong, and I'm guessing it's the VF22. All the sources I had previously found indicates that the VF22 flows 500-something CFMs. I'll try to find some references.

-Pace
 

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Ok... I'm looking at some compressor maps and here are the maximum flow rates by my calculations:

VF22: ~490CFM
PE1820: >600CFM
VF23: ~425CFM
TD04L-13G: ~370CFM

Of course, I have not specified the manifold pressures nor efficiency ratios for these numbers, but they are the practical flow limits so far as I can tell.

-Pace
 

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The TD05 is a nice turbo, and we can source these if the desire is there, but only new varients, not used ones.

It is the small 16G turbo, but unfortunately, not a direct bolt on persay 9though not a tough one either). Tose that have it can fill you in, or I'd be happy to.

I am running this turbo on my Legacy Turbo along with the intercooler...both are off of a '95 STi Type RA, and at 1 bar, the car is much quicker than most commonly modded WRX's. Easily runs with a good friends low 13 second 1G DSM.

Adam
www.z1auto.com
 

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Re: Re: Re: 20G

TypeC said:


Where did you get this info, particularly the VF22 info. Seems off (VF22).
I can't recall exactly, though I think it came from Jan Shim from i-club...it was credible enough (from a member standpoint) that I saved it to my spreadsheet. :)
 

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Re: Re: Re: Re: 20G

n2xlr8n said:


I can't recall exactly, though I think it came from Jan Shim from i-club...it was credible enough (from a member standpoint) that I saved it to my spreadsheet. :)
Yeah, I'd have to see it to believe it. If you've ever had a VF22 side by side with the 13g, and drove both you'd know there was much more of a difference.

pace said:
Ok... I'm looking at some compressor maps and here are the maximum flow rates by my calculations:

VF22: ~490CFM
PE1820: >600CFM
VF23: ~425CFM
TD04L-13G: ~370CFM
Where did you get a VF22 map? Can you post it? That is one of the ones I don't have.

-C
 
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