The Biggest Automotive Turbo Made
01-15-2005, 05:27 PM
#21
The gt60 has a 141mm compressor wheel. I am not sure if that's the overall diameter or the tang of the wheel. It's big enough to support up to 2,000 hp, so I think the number may be correct.
01-15-2005, 06:06 PM
#22
Originally Posted by Spin
and if you have 12 PSI and you compress it again, it will still come out the other end of the second compressor as 12 PSI and the same amount of air because your not compressing more air into a smaller area, you are compressing the same amount of air into the same area as the 1st compressor , or at least on any combustion engine you are. and to make the area after the second compresser smaller, you will have to make the intake tubing smaler, and you wont change anything other than causing restriction to the same amount of air as before and that will get you even less power than you started with, the boost may go up in the last situation but power will still be less because you are still pushing the same amount of air, however, through a smaller area.
01-15-2005, 06:15 PM
#23
BTW, the reason you would want more than one stage of compression is because that's the only way you can get very high levels of pressure rise efficiently. That is why jet engines run 10 or more stages of compression to get pressure rises of 35:1 (500psi). Axial compressors can get a pressure rise of about ~1.8:1 per stage efficiently and centrifugal compressors can get 4:1 per stage but not as efficiently.
01-15-2005, 08:51 PM
#24
On The Tree
Join Date: Nov 2004
Posts: 117
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by NOSjohn
The gt60 has a 141mm compressor wheel. I am not sure if that's the overall diameter or the tang of the wheel. It's big enough to support up to 2,000 hp, so I think the number may be correct.
That is the exuducer not the inducer.
The inducer is the size of the compressor wheel at the inlet.
The exducer is the big part of the wheel that shoots the the air out of the outlet.
If the inducer was that big it would be good for more than 3000HP.
01-16-2005, 12:54 AM
#25
Originally Posted by John Wilde
That is the exuducer not the inducer.
The inducer is the size of the compressor wheel at the inlet.
The exducer is the big part of the wheel that shoots the the air out of the outlet.
If the inducer was that big it would be good for more than 3000HP.
The inducer is the size of the compressor wheel at the inlet.
The exducer is the big part of the wheel that shoots the the air out of the outlet.
If the inducer was that big it would be good for more than 3000HP.
The GT42 has either choice of a wheel diameter of 94mm or 104mm and a listed rating of 500-1000. So, the inducer will be what 82mm and 92mm? I'm pretty sure the old style t-88 can make more than 1,000hp. These new style turbos are supposed to make more than that.
Even with the GT60 having an overall wheel dia. of 141mm...that has to STILL be one hell-u-va inducer...don't you think?
01-16-2005, 11:40 AM
#26
On The Tree
Join Date: Nov 2004
Posts: 117
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by NOSjohn
I wasn't sure if that was the outside or inside.
The GT42 has either choice of a wheel diameter of 94mm or 104mm and a listed rating of 500-1000. So, the inducer will be what 82mm and 92mm? I'm pretty sure the old style t-88 can make more than 1,000hp. These new style turbos are supposed to make more than that.
Even with the GT60 having an overall wheel dia. of 141mm...that has to STILL be one hell-u-va inducer...don't you think?
The GT42 has either choice of a wheel diameter of 94mm or 104mm and a listed rating of 500-1000. So, the inducer will be what 82mm and 92mm? I'm pretty sure the old style t-88 can make more than 1,000hp. These new style turbos are supposed to make more than that.
Even with the GT60 having an overall wheel dia. of 141mm...that has to STILL be one hell-u-va inducer...don't you think?
The GT-42 is offered in 3 flavors that I know of.
they have 72,74 and 76 MM Compressors.
They are rated at 900-1200HP.
Duttweiler just made 1830HP with twin GT-42 72MM on his 287ci splayed valve SBC.
He had us pick up some 74MM for our 394ci 18* Headed Motor.
We should have enough turbo for 2100HP.
The old PT88 is good for about 1250HP.
They can put the gt-47 wheel in it now, not sure what it will make.
The GT-47 88MM is good for between 1450-1500HP.
The inducer on the GT60 is aobut 106MM.
Any other questions???
01-16-2005, 11:45 AM
#27
hahaha...I think you've forgotten more than I know. Some good info., thanks John !
Oh ya, Duttweiler is DA' man! It's amazing the power he's making with that small C.I. stroker motor.
Oh ya, Duttweiler is DA' man! It's amazing the power he's making with that small C.I. stroker motor.
01-16-2005, 11:53 AM
#28
On The Tree
Join Date: Nov 2004
Posts: 117
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by NOSjohn
hahaha...I think you've forgotten more than I know. Some good info., thanks John !
Oh ya, Duttweiler is DA' man! It's amazing the power he's making with that small C.I. stroker motor.
Oh ya, Duttweiler is DA' man! It's amazing the power he's making with that small C.I. stroker motor.
It is not that I know anything, I just know people that do.
Duttweiler is the man, he mentioned that there was more power
left in the motor if he upgraded the turbos.
He had about 18 dyno passes over 1800HP.
01-16-2005, 01:48 PM
#29
TECH Veteran
iTrader: (12)
Join Date: Dec 2004
Location: Rockville, MD
Posts: 4,354
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by stangkillin99ss
12 psi is 12 psi any way you look at it
01-17-2005, 07:09 PM
#30
Staging Lane
Join Date: Nov 2004
Location: Apopka, FL
Posts: 76
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 8KickassRS9
not really, with different size turbos that 12psi and power will occur in different places, not only that but the size also accounts for airflow and such.
For instance, does a gt42 at 12 psi produce the same power as a t25 at 12 psi? I dont think so.
And the purpose of compounding turbos is to simply increase the total air into the motor ... some of the diesels in tractor pulling circles are running 3 and 4 turbos in series/parallel to produce upwards of 250 psi boost.
