Automobile Mag. Dyno Test of Sky Red Line - Saturn ION RedLine Forums
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 44 (permalink) Old 09-13-2006, 06:05 PM Thread Starter
Member
 
Axel's Avatar
 
Join Date: Jun 2006
Location: Charlotte, NC
Posts: 31
Automobile Mag. Dyno Test of Sky Red Line

Automobile Mag dyno tested the turbo in a Red Line


(excerpts)
Quote:
Youíre also probably aware that the Red Line version gets a limited-slip differential, a performance-tuned suspension, and dual exhausts.

But forget all that. The most interesting thing about the swiftest Sky is without question its engine. And this isnít some half-assed, hobbled-together, turbocharged old lump weíre talking about. Need proof of the new-think? Saturn fills the thing with Mobil 1 synthetic motor oil at the factory.

This state-of-the-art, turbocharged and intercooled, sixteen-valve in-line four is GMís first direct-injection engine in the US, and itís been renforced to better handle the turboís 20 psi. The powerplant also has the highest output--and the highest specific output--of any engine in the Ecotec family: 260 hp and 260 lb-ft of torque. Thatís a lot of power for a 2.0-liter engine.

By injecting fuel directly into the cylinders, GM was able to maintain a relatively high compression ratio (9.2:1), which helps the engine make more power off-boost and also contributes to better overall efficiency. Continuous cam phasing on both the intake and exhaust cams further increases efficiency and helps reduce turbo lag. For example, at low revs, the engine computer will allow a small amount of valve overlap, opening both the intake and exhaust valves at the same time. This increases the volume of gases flowing through the turbo, keeping it spooled up and ready to produce boost.

To wit: Mash the accelerator from idle and the twin-scroll turbo starts building boost almost immediately. All too often, having a turbo small enough to spool up quickly at lower revs means that it runs out of breath as the tach needle hits the fun end of the spectrum. But thatís simply not the case with the Sky Red Line. The 6300-rpm fuel cutoff might be relatively low, but the little motor pulls hard all the way to the top, and all the techno goodies work together to make the displacement-challenged Red Line drive more like a normally-aspirated car with a big, honking motor.

We were impressed with the Red Lineís ability to make power all over the rev range, but why should you take our word for it? We took it to a chassis dyno so you can see exactly what it puts out. And the Skyís rough and tough exhaust note made everyone turn around and listen. So, naturally, we grabbed the video cameras, and you can hear it for yourself.

On the dyno, the Saturn Sky Red Line put 228 hp and 248 lb-ft of torque to the rear wheels. Those are very, very impressive numbers. The peak torque number is quite a bit higher than we expected, but more impressive still is the shape of the torque curve. This little monster put down more than 200 lb-ft of torque from 2000 rpm to almost 6000 rpm.

The Ecotec isnít a particularly smooth or refined engine, but the dyno run backed up our impression that it provides truly world-class power delivery. The next time you see someone driving a Sky Red Line or its mechanical cousin, the Pontiac Solstice GXP, youíll know that their ear-to-ear grin isnít just due to their carís gorgeous looks.
Video of Dyno Test: (Windows does not seem to be working... the QuickTime does):
http://www.automobilemag.com/multime...red_line_dyno/
Axel is offline  
Sponsored Links
Advertisement
 
post #2 of 44 (permalink) Old 09-13-2006, 06:39 PM
Senior Member
 
Project_Redline's Avatar
 
Join Date: Dec 2005
Location: Pittsburgh, PA
Posts: 1,197
That is pretty sick...suprised though...I thought the 260/260 would be underrated as well...shame...

2004 ION Redline ...dewinged...

SPS Front Strut Tower Brace, BWoody Traction Bars that need fixed, Weapon R Short Ram Intake w/AEM Dryflow Filter, ZZP MPS w/ 3.0" pulley, empty cat and Magnaflow 2.5" Exhaust
...and I'm spent...

See my other
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Project_Redline is offline  
post #3 of 44 (permalink) Old 09-13-2006, 07:45 PM
Senior Member
 
Shabodah's Avatar
 
Join Date: Aug 2005
Location: Walker's Kingdom
Posts: 11,403
Quote:
Originally Posted by Project_Redline
That is pretty sick...suprised though...I thought the 260/260 would be underrated as well...shame...
I'm sure the engine is more underated than this shows. More drivetrain power loss here than on the Ion. Everything I'm seeing is pointing to the turbo sizing holding things back, too.

Ok, so, like, yeah, umm....
Shabodah is offline  
 
post #4 of 44 (permalink) Old 09-13-2006, 08:15 PM
Senior Member
 
jpapa's Avatar
 
Join Date: Feb 2005
Location: SE MI
Posts: 2,041
Does anybody else see this thing not being easily tuneable right from the factory? The turbo is pretty much maxed out and a special system (twin scroll) that isn't that upgradeable. So if you were to replace it with a bigger non twin scrolled turbo, it might take A LOT of work to get the whole system working together smoothly. I say this because everything in that engine is designed and tuned as is to work at it's close to max state. For example, as the article mentions, the cam design to overlap the intake/exhaust valves to spool the SMALLER turbo (that wouldn't do as good of a job with a bigger/different turbo). The direct injection into the cylinders are most likely tuned to feed the engine in its max performance state (just like our injectors were maxed out from the factory).

I dunno, I could be wrong, but it just seems like all the different type of engineering that went into this engine/turbo application that you don't normally see in such systems, that it's going to not like to be modified. Pretty much just like our cars, but even worse.

I'm sure it's still upgradeable, but it will take a lot of money, time, and work to get a higher performance mode out of this engine. I don't really see a factory stage kit helping this powertrain either. The torque drops for the entire rev range, and the power peaks before redline. The turbo is already close to, if not maxed out, so more fuel wouldn't really create any more power.

I'm not trying to badmouth the car or engineering behind it, the turbo Ecotec still a blast to drive in any of the cars (thank you working for GM this summer :-D). I'm just seeing people having a lot harder of a time upgrading this car as compared to the more simple supercharged Ecotec...What do you all think?

Quote:
Originally Posted by Ahriman
this makes me very sad... and mad... im sad and mad.... im smad
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Cyanide & Happiness @
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jpapa is offline  
post #5 of 44 (permalink) Old 09-14-2006, 04:55 AM
Senior Member
 
sheek360's Avatar
 
Join Date: Jan 2006
Location: MIAMI
Posts: 13,591
simply in awe of that engine.... that tq curve is insane, its like an ion RL's, but better!

Quote:
Originally Posted by AlphaJaguar5, in referance to the coke vs soda vs pop arguement
If you say Pop your a queer. It's that simple.
/\ best rebuttle ever, thats a retort fo dat ass
sheek360 is offline  
post #6 of 44 (permalink) Old 09-14-2006, 05:45 AM
Senior Member
 
vandy0419's Avatar
 
Join Date: Mar 2006
Location: Dayton, OH
Posts: 8,036
I'm disappointed in the rwhp #s...
vandy0419 is offline  
post #7 of 44 (permalink) Old 09-14-2006, 05:50 AM
Senior Member
 
vandy0419's Avatar
 
Join Date: Mar 2006
Location: Dayton, OH
Posts: 8,036
If anything is underrated from the factory its that damn 335i Twin Turbo Coupe! 300/300 claimed...dyno shows 275rwhp and 299lb/ft!!!
vandy0419 is offline  
post #8 of 44 (permalink) Old 09-14-2006, 06:01 AM
=[‹BER MODERATOR]=
 
NoRemorse's Avatar
 
Join Date: Jan 2006
Location: Michigan
Posts: 9,519
Quote:
Originally Posted by vandy0419
I'm disappointed in the rwhp #s...
I am not at all, this engine OCULD NOT have been underated like ours. Any GM engine going into production from 2005+ get indipendently dyno'd. It is an effort to get ALL automakers to do this, so automakers don't make BS claims about HP.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
-Documenting the build of my LSJ, as well as other influential cars.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
NoRemorse is offline  
post #9 of 44 (permalink) Old 09-14-2006, 06:16 AM
Senior Member
 
vandy0419's Avatar
 
Join Date: Mar 2006
Location: Dayton, OH
Posts: 8,036
Quote:
Originally Posted by NoRemorse
I am not at all, this engine OCULD NOT have been underated like ours. Any GM engine going into production from 2005+ get indipendently dyno'd. It is an effort to get ALL automakers to do this, so automakers don't make BS claims about HP.
Ah, for insurance reasons and stuff? How did out 06s and 07s stay underrated then? Or is it just when a new model is released they do it? Doesn't make sense with that BMW then.
vandy0419 is offline  
post #10 of 44 (permalink) Old 09-14-2006, 06:19 AM
=[‹BER MODERATOR]=
 
NoRemorse's Avatar
 
Join Date: Jan 2006
Location: Michigan
Posts: 9,519
Quote:
Originally Posted by vandy0419
Ah, for insurance reasons and stuff? How did out 06s and 07s stay underrated then? Or is it just when a new model is released they do it? Doesn't make sense with that BMW then.
GM is doing it with only ENGINE put into production after 2005.

Like she SRL's LNF.

It is comepltly voluntary though, automakers can choose to do it or not.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
-Documenting the build of my LSJ, as well as other influential cars.

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
NoRemorse is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Saturn ION RedLine Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Aug 06 Automobile GXP first drive Axel Sky Discussion 7 07-09-2006 08:55 PM
Inside Line Full Test DeYanko ION Redline Discussion 5 10-17-2005 09:26 AM
Ion Red Line TV Test drive.... Blu_Redline ION Picture/Media Post 17 10-16-2005 04:11 PM
Red Line on Dyno * VID * DaytonaGTS ION Picture/Media Post 24 05-02-2005 07:30 PM
Vita's Red Line on the Dyno. Aeain ION Picture/Media Post 9 01-28-2005 07:59 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome