Anyone have some measurements on say a 60trim T3 vs. 18G compressor wheels? i.e. which'ns bigger etc? Also, if anyone knows anything about Mitsubishi turbos, how do those wacky *cm2 turbine housing measurements compare to normal *A/R measurements? How about the compressor housings? .60a/r T3 vs. say a TD05? Damn, Mitsu turbos are wacky...

 

yeah they are wacky. and the compressor maps for the mitsubishi tubos (like 15g and 18g) are proprietary. i've never seen one ever.

 

bump for informizational purposes.

 

I wish I remember who to credit for this. I saved this information in a text file from an old post:

"This is from the Oct. issue of "Turbo"...
Wheel trim: 55.1 compressor, 76.8 turbine
Housing sizes: 8cm2"

 

What do those specs pertain to?

 

Anyone have a link to a page that shows (or does anyone feel like explaining) what all this a/r and trim wheel stuff is is, and how it works?

 

TD05H-18G, but I have yet to attempt to learn what they mean! I figure that since I already own the 18G, there's no use learning something that's going to make me wish I'd bought something else. I think it's better to remain ignorant for now.

 

http://www.extrememotorsports.com/gloss.htm
This explains the designation of the 14B/16G/20G. Basically, that part of it refers to the compressor wheel.

http://www.extrememotorsports.com/gloss.htm#td05
TD04/TD05/TD06
"The TD series is the common name for several Mitsubishi turbochargers. The TD05 is the most popular of the upgraded turbos. "TD05" is actually Mitsubishi's designation for the turbine wheel, and, when combined with a compressor wheel size ("16G" is the most popular) and exhaust housing opening ("6 cm2"), defines a given turbocharger."

I believe the 7cm² or 8cm² that is shown, represents the area of the inlet to the turbine housing. I used to have some info saved that had several comparisons between Mitsubishi and T3/T4 turbos, but I can't seem to find it now. It had several different comparisons between the compressor and turbine wheels.
If I find it, I'll update the post.
Y'all take care!

 

I still can't find the info I mentioned above, but this should do the trick.
This site has many of the particulars dealing with the Mitsubishi turbos:
http://www.vfaq.com/mods/Turbo-compare.html

Here is a link to some of the Mitsu compressor maps:
http://www.vfaq.com/mods/Turbo-compressor-maps.html

For the turbos most of us here are used to dealing with, check here for compressor/turbine housings & maps:
http://www.turboneticsinc.com/catalog/index.html

 

Good info, thank you!

 

No Problem... glad to share!

 

here are some maps for
tdo4:
09b, 13g (dsm turbo auto trans), 15g (some volvos), 18t

td05:
14b, 14g (also similar to the T3-60), 16g, 16g big

td06 20g
T3 60 trim
T04B s-trim
IHI RHF55 (IHI maps are impossible to come by)

http://www.stealth316.com/2-3s-compflowmaps.htm

the TD04 15g is similar in flow to a 60 series T3, but with a taller map and with radial instead of convoluted impeller blades. radial blades tend to result in a higher PR at low compressor rpm, but lose efficiency up top because of shock losses due to the angle the air is impacting the impeller blades at. higher compressor rpm is where the T3's with their swept back impeller blades have higher compressor efficiency.
the 15g is found on volvo 850's and some volvo 940's and 960's and the saab 9000 aero.