2.4L VVT ECOTEC Dyno Graph - Pontiac Solstice Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 39 (permalink) Old 05-08-2005, 07:01 PM Thread Starter
Administrator
 
brentil's Avatar
 
Join Date: Jun 2004
Location: Orlando, FL
Posts: 8,901
Garage
2.4L VVT ECOTEC Dyno Graph

Well, I've been chcking GM Dealer World every day in hopes of finding new info. There's a couple specific things I look for. Wheel images, radio images, engine info, etc.

Well this weekend GM officially put up the dyno graphs for the 2.4L VVT ECOTEC engine across all the lines using it except the HHR so far.

I've attached the following files;
  1. Solstice dyno graph
  2. G6 dyno graph
  3. Cobalt SS dyno graph
  4. Cobalt 2.2L dyno graph
  5. Cobalt SS Supercharged dyno graph

I'm working on photochop of them together for comparison reasons.








Attached Thumbnails
Click image for larger version

Name:	2006_Ecotec_LE5_Pontiac_Sol[1].jpg
Views:	3626
Size:	12.5 KB
ID:	1330   Click image for larger version

Name:	2006_Ecotec_LE5_Pontiac_G6[1].jpg
Views:	2566
Size:	13.0 KB
ID:	1331   Click image for larger version

Name:	2006_Ecotec_LE5_Chevrolet_C[1].jpg
Views:	4857
Size:	12.4 KB
ID:	1332   Click image for larger version

Name:	2006_Ecotec_L61_Chevrolet_C[1].jpg
Views:	3349
Size:	13.9 KB
ID:	1333   Click image for larger version

Name:	2006_20L_LSJ_Saturn_ION_Red[1].jpg
Views:	5357
Size:	14.9 KB
ID:	1334  


2006 Mysterious Solstice
2007 Mean Solstice GXP
2008 Velocity Yellow Corvette Coupe
brentil is offline  
Sponsored Links
Advertisement
 
post #2 of 39 (permalink) Old 05-08-2005, 07:10 PM
Founding Member
 
psycho-squirrel's Avatar
 
Join Date: Oct 2004
Location: Vancouver, BC
Posts: 844
Nice find brentil!

I am curious as to why the Solstice 2.4L has a hiccup around 3000 rpm for both torque and HP?

The torque curve at 3 grand has a dramatic dip, while the hp graph is only slightly affected.

There seems to be little or no hiccup on the other 2.4's (detuned versions).

Anyone have an idea about what's going on here?
psycho-squirrel is offline  
post #3 of 39 (permalink) Old 05-08-2005, 07:16 PM
Founding Member
 
rlhammon's Avatar
 
Join Date: Dec 2004
Location: West side of Michigan
Posts: 2,884
Thanks for the post...

I only wish that the graphs had common scaling so that you could compare them side by side without a little more ease.

Seeing as the Cobalt is roughly 130 lbs. heavier, and little less torque, and it's front wheel drive I think the Solstice will be "fun" to drive, though a FI motor would be "more fun".

You can break loose the tires in the base Cobalt in 1st and the 1st to 2nd shift. I haven't had the pleasure of driving the Cobalt SS w/ the Supercharger in it tough, and doubt I'd be able to "test" it as I would like.

Glad to see the official dyno's though... great find, and thanks for looking (so I and others didn't have to).
rlhammon is offline  
post #4 of 39 (permalink) Old 05-08-2005, 07:54 PM
Mod Emeritus
 
Join Date: Apr 2004
Posts: 7,468
Great find Brentil! That is a funny hiccup. Cam changeover for the VVT?




Solstice and Sky Fan

Retired Solstice Forum Super Moderator (Apr 2005-July 2009)
Fformula88 is offline  
post #5 of 39 (permalink) Old 05-08-2005, 08:09 PM
Founding Member
 
Join Date: Apr 2004
Location: Kemah, Texas
Posts: 1,844
Quote:
Originally Posted by Fformula88
......... Cam changeover for the VVT?
That's my guess.
DreamerDave is offline  
post #6 of 39 (permalink) Old 05-08-2005, 10:54 PM Thread Starter
Administrator
 
brentil's Avatar
 
Join Date: Jun 2004
Location: Orlando, FL
Posts: 8,901
Garage
Combined comparison graph to scale.

I wanted to say VVT too, but look at the 2.2L, it has it too.








Attached Thumbnails
Click image for larger version

Name:	Dyno_compare.jpg
Views:	9286
Size:	176.9 KB
ID:	1335  

2006 Mysterious Solstice
2007 Mean Solstice GXP
2008 Velocity Yellow Corvette Coupe
brentil is offline  
post #7 of 39 (permalink) Old 05-08-2005, 11:12 PM
Member
 
Join Date: Apr 2005
Posts: 446
Could be tired/bad valve springs developing a harmonic. Do the ecotec springs use dampers or are they beehives like the LSx engines?

Stonebreaker
1996 Impala SS 11.99 @ 115 mph
PhD in RE (Redneck Engineering)

It works in practice, but does it work in theory?
stonebreaker is offline  
post #8 of 39 (permalink) Old 05-09-2005, 04:01 AM
Member
 
Join Date: May 2005
Location: North Florida
Posts: 381
Quote:
Originally Posted by Fformula88
Great find Brentil! That is a funny hiccup. Cam changeover for the VVT?
The LT1 has exactly the same "hiccup". I've seen it on other graphs, too. It's not uncommon. VVT? No, I don't think that's part of it.
WaitingForBoost is offline  
post #9 of 39 (permalink) Old 05-09-2005, 04:43 AM
Member
 
Join Date: May 2005
Posts: 5
Hehe maybe Im being anal but the torque drops a few ft/lbs below 90% of peak at that dip at 3000....not that i care about a few ft/lbs really...its just the point
ImSlow is offline  
post #10 of 39 (permalink) Old 05-09-2005, 07:03 AM
cdb
Founding Member
 
cdb's Avatar
 
Join Date: Aug 2004
Location: narberth-close to philadelphia
Posts: 753
it looks like the solstice motor is tuned to produce the most torque in the low rev range compared to the other NA ecotecs. that could accentuate the dip at the VVT changeover. if the trade is a dip at 3000 for more tourque off the line then i'm all for it.
cdb is offline  
post #11 of 39 (permalink) Old 05-09-2005, 07:05 AM
Member
 
Adrenaline's Avatar
 
Join Date: Apr 2005
Location: Randallstown, MD USA
Posts: 905
From the other thread on shifting techniques and my recent discoveries, having a drop at 3,000rpm isn't a big deal at all, just shift a little before 3,000.
Adrenaline is offline  
post #12 of 39 (permalink) Old 05-09-2005, 07:25 AM
Founding Member
 
Join Date: Apr 2004
Location: Kemah, Texas
Posts: 1,844
OK, you guys that're better than me with a calculator, could you figure out if up shifting at 6500RPM would drop you above or below that torque valley around 3000RPM?
DreamerDave is offline  
post #13 of 39 (permalink) Old 05-09-2005, 08:13 AM
Member
 
Join Date: May 2005
Posts: 5
Quote:
Originally Posted by DreamerDave
OK, you guys that're better than me with a calculator, could you figure out if up shifting at 6500RPM would drop you above or below that torque valley around 3000RPM?
I highly doubt it will drop even close to 3000rpm...anyone get transmission numbers yet? If it does Im gonna go buy something else .....in my current neon when i shift at 6500 from first to second gear it drops to roughly 4800
ImSlow is offline  
post #14 of 39 (permalink) Old 05-09-2005, 08:29 AM
Founding Member
 
SkyCaptain's Avatar
 
Join Date: Jan 2005
Location: Fairmont, WV
Posts: 527
1st, the fourth dyno pic is pretty screwed up. The lines are supposed to cross at 5252...

2nd, I'd definately have to drive the car to see if the flat torque makes up for the ridiculously low hp in the low rpm ranges...

Veritas Aequitas
And we shall flow a river forth to thee
And teeming with souls shall it ever be.
SkyCaptain is offline  
post #15 of 39 (permalink) Old 05-09-2005, 09:11 AM
Administrator
 
SolsticeMan's Avatar
 
Join Date: Feb 2004
Location: Hi-yo Silver....
Posts: 5,206
Quote:
Originally Posted by SkyCaptain
1st, the fourth dyno pic is pretty screwed up. The lines are supposed to cross at 5252...

...
I thought the same exact thing, Sky'. For whatever reason, they re-scaled the hp axis. If you fix the hp axis, the crossover is at (or eyballing it) 5252.
SolsticeMan is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Pontiac Solstice Forum 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










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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