Can someone please explain to me what all the different turbo names mean?

For example a Greddy T-78, T-88, an Apex IHI RX-6, or a T3/T4 . What do the "T-78", "T-88", "IHI RX-6", or "T3/T4" mean? Does it have something to do with the sizes of the housings, aspect ratios, or are they just names given to different size turbos from the same brand?

What kind of turbo is OE on a FC, or FD?

(feel free to explain in super detail )
Thanks for any help guys.

 

I think the t stands for the compressor trim. but thats all i know usually the higher the number the bigger. Any way i'm from wichita ks too and go to WSU, I've seen your car at the school, its badass. I'm suprised i haven't noticed you on this forum before since you have 1400+posts. I pmed you. Later

 

Like car manufactures, turbo companies name their products. You really can't look at a Garrett T66 and compare it directly to a Mitsubishi/Trust T-78. They are just names, but something like a T-88 is bigger then a T-78, a Garrett T72 is bigger then a T66 or T62, etc...

 

So what parameters would one use to directly compare two turbos from different manufacturers? Like a T3/T4 turbo, do the T3 and T4 mean anything? or is it another manufacturer thing?

 

There isnt really a naming procedure. T3/T4 is a a T3 turbo with a T4 footprint. THere are turbo companies that make their own turbos and then there are the big manufacturers that use turbos and custom work them and resell them. I.E. HKS uses Garret Turbos, Blitz uses KKK owned by Borg-Warner, Greddy uses Mitsubishi turbos. They come up with all sorts of different names for their turbos. Then you got Turbonetics and Innovative Turbo Systems which sell and distribute their own Turbos calling them T66 or T72 where the number usually means the size of the compressor. It is all really complicated and confusing.

 

Bingo!
You going to want to look at compressor maps, housings, trims, etc...
Do a lot of reasearch, there is already plenty of great information on this site.

 

Original turbos for the 3rd gen are Hitachi HT-12. Both are the same turbos.

Tim

 

you should read the book "Maximum Boost" by corky bell

 

What does that mean? "footprint" in particular. T3/T4 is a T3 turbo in a T4 housing maybe?

 

Thanks, I'll look for that.

I thought that meant it the turbo has a T3 turbine with a T4 compressor. no?

 

I think youll find t-88 and t-60 refer to the frame size or cartridge of the turbo and has no direct relation to the compressor or turbine housings they use the 'trim' to refer to these.
a t-3/t-4 is just a hybrid using say the turbine housing from a t-3 and a compressor housing from a t-4 or something along those lines.

 

Footprint just refers to the flange/bolt pattern where the exhaust housing bolts onto the manifold. The T3 family of turbos has a different footprint that the T4's for example.. you couldn't put a T3 turbo onto a standard cast HKS manifold for example because they are typically T4, you would need some sort of adapter plate.

 

I think I found this on a supra website somewhere...


RPS:

TS04:
Most common housings for this turbo are 0.58 and 0.70, it makes
about 450 rwhp in the former and 500 rwhp in the latter, spools slightly
slower than stock, and can commonly be used on the stock fuel system.
This is a good turbo if you have an automatic, and can be daily driven.

T61:
Somewhat bigger than the TS04, this turbo can make 550-600 rwhp. It
requires an upgraded fuel system. This doesn't lag too much, a T61 car
lags a bit more than stock, but is streetable, if not particularly
responsive, could be used for road racing, not sure if I would recommend
this turbo for a daily driver.

T66:
Capable of making 600-675 rwhp, the T66 is a bigger turbo yet, this
is probably as big a turbo as I would recommend for the street, it makes
full boost right around 4250 rpm on most cars, a significant amount of
lag, but not horrendous... (full boost being 1.5-1.6 bar) This is a very
common turbo, and a nice setup for drag racing with some street driving.

T70:
Slightly bigger than the T66, the T70 is probably not a streetable
turbo. Lag is a couple hundred rpm more than the T66, power output ranges
from 650-750 rwhp... perhaps a bit more with headwork... This is a nice
turbo for drag racing.

T72+:
These turbos are only good for drag cars for the most part, lag is far
more than smaller turbos, power outputs are from 750-1000 rwhp.Twin turbo
kit: Using T25/28 ball bearing turbos, this kit will make slightly more
than 500 rwhp, while spooling faster than the TS04 0.70... very good
choice for a street car that needs more power than BPU.


HKS:

GT2540:
These twin turbos are used on the UPRD supra, and used in single form
on quite a few different cars. Nice turbos, not enormous lag, maybe slightly
more lag than their brethren the 2835s, but they spool a little faster
too... i'm told that car makes power in the 900 rwhp range on turbo alone,
but this could be just a rumor.

GT2835:
Probably the most common twin turbos used on supras, this kit is large,
and the turbos have a fair amount of lag, they make full boost in the 5000
rpm range, perhaps a bit higher. Very nice top end on this system, and
I've seen power output in the 700-800 rwhp range fairly consistently with
the right fuel support.

T04R:
A fairly large single turbo, this comes with a pretty big exhaust A/R
stock, 0.96... I would have thought it would be laggy, but my experience
with it shows otherwise... it spools a touch faster than a T66, but has a
bit more power output capability... it has made power in the 675-750 rwhp
range, and is becoming fairly popular because of this.

T51R:
This is HKS's biggest single turbo that is commonly sold, although it
isn't THAT much bigger than the T04R. Probably in between the T66 and T70
in size, the T04R makes full boost in the 5k range, and none has really
been able to realize its full power potential... i wouldn't be surprised
at seeing 800+ rwhp from a T51R under the right circumstances... very
strong turbo but i wouldn't use it on a street car personally.


Greddy:

T67:
The T67 isn't used on supras very often, its a TD07-25g turbo, more
commonly used on MR2s... its capable of right around 600 rwhp, and spools
similarly to a T66, so most people choose to go with either the T66 or
T61. Again, on the upper limit of streetability.

T78:
This is one of the more common turbos used on supras... it makes full
boost somewhat past 5000 rpm, but has the potential to make 750+ rwhp...
nice turbo, very good top end once it gets spooled... lots of drag cars
use it, and its fairly inexpensive now.

T88:
Somewhat bigger than the T78, the T88 has close to 1000 rwhp capability,
although i would imagine it makes full boost close to 6000 rpm, so a built
motor is almost a certainty with this turbo... not too expensive but its
not too usable on most supras so...


Blitz:

Single:
The Blitz single turbo uses a K27 turbo and is capable of right around
600-650 rwhp... spools somewhat faster than a T66, and the kit is well
made, but you need to modify it to work on the US spec supra, pain in the
*** to do.

Twins:
Supposedly capable of right around 700 rwhp with about as much lag as
the single, haven't really heard too much about it to corroborate this,
but I wouldn't doubt it... kinda of expensive, and this needs heavy
modification to work on a US spec supra.


Others:

TPC:
This turbo supposedly has 625-750 rwhp capability with faster spool up
than a T66... dunno enough about it to really say, but the dyno charts
seem to show full boost at right around 4500-5000 rpm, which isn't TOO bad
for a turbo with its power capabilities... not enough people use it to
really say.


Fastrax:

Fastrax makes all sorts of custom turbos... my experience with them is
that they make somewhat more power and spool somewhat faster than the
turbos they were built off of... fastrax has a lot of experience in the
drag racing scene, and they make high quality products. My Fastrax turbo
supposedly has 750-800 rwhp capability while spooling slightly faster than
a T66... it certainly spools faster than a T66 in my experience, we'll
have to see how much it puts down on the dyno.

 

Ahhh, I see. Thanks.

 

Nice post!! very informative

 

thanks for the info, thats good stuff right there.