Garrett GT42R
Thread Starter
Joined: Aug 2002
Posts: 10,331
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From: San Antonio, TX
Garrett GT42R We have not decided on exactly what size turbo we are going with in my new kit.......
I was wondering is anyone running one and how it is doing with a lil bigger cubes then stock.
I have been looking at the compressor map of this turbo and from what i can tell think ill be in the 74% region. Will this turbo make 800rwhp and do it while using under 18 psi of boost on my 370???
Here is the air consumption of a 370.
http://www.forcedinductions.com/consumption370.htm
Anyone be of any help????
Thanks
Kyle
*edit its this one
Garrett GT42R Dual Ball Bearing Turbos
Brand new! Supports up to 1000 hp. Turbine: 84 Trim, 1.15 A/R. Dual ball bearings allow for higher efficiency and much faster spool up.
102mm, 53Trim Compressor*
I was wondering is anyone running one and how it is doing with a lil bigger cubes then stock.
I have been looking at the compressor map of this turbo and from what i can tell think ill be in the 74% region. Will this turbo make 800rwhp and do it while using under 18 psi of boost on my 370???
Here is the air consumption of a 370.
http://www.forcedinductions.com/consumption370.htm
Anyone be of any help????
Thanks
Kyle
*edit its this one
Garrett GT42R Dual Ball Bearing Turbos
Brand new! Supports up to 1000 hp. Turbine: 84 Trim, 1.15 A/R. Dual ball bearings allow for higher efficiency and much faster spool up.
102mm, 53Trim Compressor*
Last edited by NA$TY-TA; Jan 19, 2005 at 02:44 PM.
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From: Wichita Falls, TX
If I under stand the map and flow at 18psi would will 86lbs. and the 2.22. On the map the 2.22 would put that at the outside line but still in the 74% area. I say it should be fine, there were two maps for 2 different a/r's. One of the book I was reading said you take your lbs.consuption time 10 and that will get you close to the output horsepower.
Ricky
Ricky
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Joined: Aug 2002
Posts: 10,331
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From: San Antonio, TX
Originally Posted by y2khawk
from that data, you'll need more than 18 to make 800RWHP. unless you spin it past 6500 
The 42R will more than support that power however.
The 42R will more than support that power however.
Thanks guys even with the 102mm, 53Trim Compressor??? I added that after i posted sorry..... I do shift now at 6600rpm....... but dont want to spin the crap out of the motor.... the goal is 800rwhp on a Mustang dyno thru my 6 speed and 10 bolt (For now) if it doent break on the dno. Should i just go back to our original idea and stick with a T-88????
Thanks
Kyle
Thread Starter
Joined: Aug 2002
Posts: 10,331
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From: San Antonio, TX
Originally Posted by y2khawk
it's not the turbo limiting you, it's the motor comsumption at 18psi.
Just doesn't push enough air to make 800 to the tire at 18psi, 19 would get you closer
Just doesn't push enough air to make 800 to the tire at 18psi, 19 would get you closer
Thanks Matt for the Help.
Kyle
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Thread Starter
Joined: Aug 2002
Posts: 10,331
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From: San Antonio, TX
Originally Posted by y2khawk
Looking closer at the map, you'll start to choke the turbo much above 15 psi with a 370 
88 would probably fit better
88 would probably fit better
Thanks Matt...... any idea how much boost it wil take with a T-88 to make 800rwhp??
With this compressor map....shouldnt be anywhere near chokng it with it....
Air cosumption table again
http://www.forcedinductions.com/consumption370.htm
Looks to be 78% efficient all the way up tp 20 psi even shifting at 6500 rpm.
Thanks
Kyle
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Verdad Gallardo A little more efficient, so maybe a little less boost. Like 1 psi less perhaps.
But, it should take about the same boost even w/ the 88. Charge temps should be a little lower, so it should make a little more power
But, it should take about the same boost even w/ the 88. Charge temps should be a little lower, so it should make a little more power
Thread Starter
Joined: Aug 2002
Posts: 10,331
Likes: 1
From: San Antonio, TX
Originally Posted by y2khawk
A little more efficient, so maybe a little less boost. Like 1 psi less perhaps.
But, it should take about the same boost even w/ the 88. Charge temps should be a little lower, so it should make a little more power
But, it should take about the same boost even w/ the 88. Charge temps should be a little lower, so it should make a little more power
Kyle
