ST-series T4 turbo
Launching!
Joined: Mar 2007
Posts: 227
Likes: 29
From: DC Metro area
Originally Posted by ABeasst
how would the ST80 spool on a 383 stroker? My 76GTS is ready to go at like 2800-3000 now and would like to know a rough estimate of how much slower the ST80 would spool.
Please dont flame. Please???
TECH Addict
Joined: Aug 2004
Posts: 2,866
Likes: 4
Originally Posted by Bill Reid
Dr,
Curious about how guys are warming up to divided housings... and hot sections truely designed for such
I'm told throttle reponse is insane...
Bill
Curious about how guys are warming up to divided housings... and hot sections truely designed for such
I'm told throttle reponse is insane...Bill
Chris.
DrTurbo, just confirming the info we spoke about on the phone......you have a tracking number for the ST80 1.1 housings, and they are due in Wednesday the 20th...and the complete units will be in the mail the next day or two after that? Right?
I have been waiting patiently since May 26th for mine!!! While I'm sure it is worth the wait, it is the last part I need for a quick makeover!
I have been waiting patiently since May 26th for mine!!! While I'm sure it is worth the wait, it is the last part I need for a quick makeover!
Originally Posted by PurEvl
hows the 80mm compare to my 88? Spool,power,size etc
Originally Posted by DrTurbo
Spool faster, power will be comparable on the compressor side, but the turbine might be a touch small. Its a more comparable turbine wheel in size and a little more flow then a GTS.
Is the housing of the ST80 smaller then the PT88?
Are the housings different sizes... between the 74, 76, 78, 80?
With the race cover, the ST80 is rated at ~1400hp but the PT88 is larger and only rated at 1250hp. But yet your saying the ST80 will spool faster and produce more power then the 88?
Any idea how much faster?
I am trying to debate if the swap is worth the $...
Thanks!!
Last edited by longrange4u; Jun 15, 2007 at 05:52 AM.
Originally Posted by longrange4u
Are the housings different sizes... between the 74, 76, 78, 80?
With the race cover, the ST80 is rated at ~1400hp but the PT88 is larger and only rated at 1250hp. But yet your saying the ST80 will spool faster and produce more power then the 88?
With the race cover, the ST80 is rated at ~1400hp but the PT88 is larger and only rated at 1250hp. But yet your saying the ST80 will spool faster and produce more power then the 88?
Marty
Originally Posted by ninetres
DrTurbo, just confirming the info we spoke about on the phone......you have a tracking number for the ST80 1.1 housings, and they are due in Wednesday the 20th...and the complete units will be in the mail the next day or two after that? Right?
I have been waiting patiently since May 26th for mine!!! While I'm sure it is worth the wait, it is the last part I need for a quick makeover!
I have been waiting patiently since May 26th for mine!!! While I'm sure it is worth the wait, it is the last part I need for a quick makeover!
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Originally Posted by ninetres
DrTurbo, just confirming the info we spoke about on the phone......you have a tracking number for the ST80 1.1 housings, and they are due in Wednesday the 20th...and the complete units will be in the mail the next day or two after that? Right?
I have been waiting patiently since May 26th for mine!!! While I'm sure it is worth the wait, it is the last part I need for a quick makeover!
I have been waiting patiently since May 26th for mine!!! While I'm sure it is worth the wait, it is the last part I need for a quick makeover!
Originally Posted by jaydubb
Im curious how it would spool also. Im building a 383 for a 3rd gen Camaro.
Please dont flame. Please???
Please dont flame. Please???
Originally Posted by Bill Reid
Dr,
Curious about how guys are warming up to divided housings... and hot sections truely designed for such I'm told throttle reponse is insane...
Bill
Curious about how guys are warming up to divided housings... and hot sections truely designed for such
I'm told throttle reponse is insane...Bill
Divided housings work awesome when a kit is designed around the housing. Unfortunately the time it takes to run each individual runner to enhance engine pulses on a V8 would be a very big chore, and I don't think the gains would be worth it. Our motors spin the turbos out of shear volume. A small motor now can take advantage of this since packaging is easier and engine pulses are proven to help spool. The ST series units have been working great on the small motors they have been tested on so far, so proper runner design can only improve on this.
Yes a PT88 is somewhat laggy on a rear mount setup. The PT88 is just not designed to operate out of its efficiency, since its turbine map is very narrow and the unit is heavy by design internally. As for the sizes, we have taken pictures of the PT88 vs an ST series units for all you guys asking. I will have them posted by Monday. You guys can then compare visually and see the differences. You will probably be very suprised.
An ST80 compressor wheel will flow 121lbs/min even with the largest housing this means it will flow close to 1350-1390 under the best peak efficieny. Remember EVERY turbo made by EVERY manufacture it rated at peak flow under highest peak efficiency. The turbine side on a PT88 is much larger then a ST series unit. The ST series unit is only a touch larger then a GTS turbine wheel. This turbine wheel is designed to fill in the gap between a PT88 and 76GTS. With that being said turbine wheel technology and comp wheels can only go so far, and can not bandaid an improper setup. You stick a ST80 on a 450ci engine and it will choke like a rock, so they aren't magic. As for your setup, the ST will DEFINITELY outspool a PT88 and will make close to the same exact power as a PT88. But what you will gain is driveability...and that is the most important factor. You can take a supra with 1500rwhp, but its not a drivers car...know what I mean? I personally think you will be VERY happy with an ST80. It will kick some major @$$.
An ST80 compressor wheel will flow 121lbs/min even with the largest housing this means it will flow close to 1350-1390 under the best peak efficieny. Remember EVERY turbo made by EVERY manufacture it rated at peak flow under highest peak efficiency. The turbine side on a PT88 is much larger then a ST series unit. The ST series unit is only a touch larger then a GTS turbine wheel. This turbine wheel is designed to fill in the gap between a PT88 and 76GTS. With that being said turbine wheel technology and comp wheels can only go so far, and can not bandaid an improper setup. You stick a ST80 on a 450ci engine and it will choke like a rock, so they aren't magic. As for your setup, the ST will DEFINITELY outspool a PT88 and will make close to the same exact power as a PT88. But what you will gain is driveability...and that is the most important factor. You can take a supra with 1500rwhp, but its not a drivers car...know what I mean? I personally think you will be VERY happy with an ST80. It will kick some major @$$.
Originally Posted by longrange4u
DR... I bought my PT88 from you guys and am just now getting it all together. It seems laggy and the housing is larger then I would like (Not bitching here so dont flame, I got what I paid for) there wasn't another option for that kind of power for my setup...
Is the housing of the ST80 smaller then the PT88?
Are the housings different sizes... between the 74, 76, 78, 80?
With the race cover, the ST80 is rated at ~1400hp but the PT88 is larger and only rated at 1250hp. But yet your saying the ST80 will spool faster and produce more power then the 88?
Any idea how much faster?
I am trying to debate if the swap is worth the $...
Thanks!!
Is the housing of the ST80 smaller then the PT88?
Are the housings different sizes... between the 74, 76, 78, 80?
With the race cover, the ST80 is rated at ~1400hp but the PT88 is larger and only rated at 1250hp. But yet your saying the ST80 will spool faster and produce more power then the 88?
Any idea how much faster?
I am trying to debate if the swap is worth the $...
Thanks!!
Originally Posted by Mr.MartyStone
I'm also interested in this info for if I upgrade from the 76 to the 80 mm wheel in the future.
Marty
Marty
The comp wheel on the ST80 will actually outflow the 88mm TV wheel used by so many out there. But flow is also determined by turbine. If you put both units on a smaller ci engine, the ST80 will outspool it, outpower it......across the board. If you place it on a large ci engine then the ST80 still outspools it easily, but now the power bridge narrows due to exaust pressure elavating to equalize the output.
Originally Posted by MIGHTYMOUSE
with all the turbo's laying around surely we can see PT-88 vs ST-80 comparison photos if it means a sale or several
Originally Posted by Mekkadon
I wonder if the ST80 is a direct bolt on with my TTI RAce Kit. Currently I have a 76GTQ.......hmmmm, but nothing is ever a direct Bolt on with FI.....hah!
I am watching these puppies closely.. I am running a ITS 76MM DBB X-trim on my Supra now.. Getting a 4L80E built for my MKIV as we speak at a local transmission shop. I might have to go into the motor of my 2JZ to support this ST80
My current turbo looks a little small right about now..
My current turbo looks a little small right about now..
Launching!
Joined: Mar 2007
Posts: 227
Likes: 29
From: DC Metro area
Originally Posted by JZ 97 SS 1500
The difference between the 76GTS and the ST80 have been within 100rpm of each other on 350 +ci engines. I don't think you could notice unless its logged and plotted.