C7 General Discussion General C7 Corvette Discussion not covered in Tech
Sponsored by:
Sponsored by:

Roots or Turbo?

Old 12-09-2012, 05:12 PM
  #1  
johnglenntwo
Le Mans Master
Thread Starter
 
johnglenntwo's Avatar
 
Member Since: Apr 2010
Location: Beaverton OR
Posts: 8,788
Received 164 Likes on 148 Posts
Default Roots or Turbo?

Which one would you prefer for the C7 FI?
Old 12-09-2012, 05:17 PM
  #2  
SBC_and_a_stick
Safety Car
 
SBC_and_a_stick's Avatar
 
Member Since: Nov 2012
Location: North California
Posts: 4,737
Received 551 Likes on 311 Posts

Default

Neither. Rotrex.
Old 12-09-2012, 05:23 PM
  #3  
RJ-92
Race Director
 
RJ-92's Avatar
 
Member Since: May 2005
Location: NY
Posts: 18,519
Received 327 Likes on 156 Posts

Default

Turbos and DI seem to work very well together. However according to Keeks' info it looks like the FI applied to the C7 will be roots.
Old 12-09-2012, 05:25 PM
  #4  
johnglenntwo
Le Mans Master
Thread Starter
 
johnglenntwo's Avatar
 
Member Since: Apr 2010
Location: Beaverton OR
Posts: 8,788
Received 164 Likes on 148 Posts
Default Wasn't an option!

Originally Posted by SBC_and_a_stick
Neither. Rotrex.
I know!
Old 12-09-2012, 05:28 PM
  #5  
Z_Rocks
Drifting
 
Z_Rocks's Avatar
 
Member Since: Nov 2005
Posts: 1,629
Received 15 Likes on 9 Posts

Default

TT
Old 12-09-2012, 05:28 PM
  #6  
johnglenntwo
Le Mans Master
Thread Starter
 
johnglenntwo's Avatar
 
Member Since: Apr 2010
Location: Beaverton OR
Posts: 8,788
Received 164 Likes on 148 Posts
Default What would you prefer?

Originally Posted by RJ-92
Turbos and DI seem to work very well together. However according to Keeks' info it looks like the FI applied to the C7 will be roots.
Not what's being dictated!

Old 12-09-2012, 05:30 PM
  #7  
johnglenntwo
Le Mans Master
Thread Starter
 
johnglenntwo's Avatar
 
Member Since: Apr 2010
Location: Beaverton OR
Posts: 8,788
Received 164 Likes on 148 Posts
Default Of course!

Originally Posted by Z_Rocks
TT


Old 12-09-2012, 05:42 PM
  #8  
SCM_Crash
Le Mans Master
 
SCM_Crash's Avatar
 
Member Since: Jul 2009
Location: Los Angeles California
Posts: 9,526
Likes: 0
Received 10 Likes on 10 Posts
Default

Roots... Maybe a cogged roots.
Old 12-09-2012, 05:55 PM
  #9  
JustinStrife
Team Owner
 
JustinStrife's Avatar
 
Member Since: Mar 2006
Location: San Diego
Posts: 27,567
Received 96 Likes on 66 Posts

Default

Turbo. All day long. Never was a fan of roots.
Old 12-09-2012, 06:01 PM
  #10  
m48xhp
Melting Slicks
 
m48xhp's Avatar
 
Member Since: May 2006
Location: Deep in the Heart, TX
Posts: 2,826
Received 211 Likes on 80 Posts

Default

http://tornadoair.com/
Old 12-09-2012, 06:29 PM
  #11  
BuddhaZ06
Drifting
 
BuddhaZ06's Avatar
 
Member Since: Dec 2008
Location: Arma Ks
Posts: 1,775
Received 8 Likes on 7 Posts

Default

Twin turbo. Hands down. Supposed to be up with technology on this thing, might as well dump the roots and go with real boost. Better mpg too.
Old 12-09-2012, 06:29 PM
  #12  
JustinStrife
Team Owner
 
JustinStrife's Avatar
 
Member Since: Mar 2006
Location: San Diego
Posts: 27,567
Received 96 Likes on 66 Posts

Default

Originally Posted by BuddhaZ06
Twin turbo. Hands down. Supposed to be up with technology on this thing, might as well dump the roots and go with real boost. Better mpg too.
Old 12-09-2012, 06:36 PM
  #13  
SBC_and_a_stick
Safety Car
 
SBC_and_a_stick's Avatar
 
Member Since: Nov 2012
Location: North California
Posts: 4,737
Received 551 Likes on 311 Posts

Default

Originally Posted by johnglenntwo
I know!
The TVS would be my second choice. Turbo? Never, I'd rather live with a 450hp NA motor.

I'm glad GM isn't going with the popular choice but rather a great choice.
Old 12-09-2012, 06:37 PM
  #14  
JustinStrife
Team Owner
 
JustinStrife's Avatar
 
Member Since: Mar 2006
Location: San Diego
Posts: 27,567
Received 96 Likes on 66 Posts

Default

Originally Posted by SBC_and_a_stick
The TVS would be my second choice. Turbo? Never, I'd rather live with a 450hp NA motor.

I'm glad GM isn't going with the popular choice but rather a great choice.
Old 12-09-2012, 06:41 PM
  #15  
SBC_and_a_stick
Safety Car
 
SBC_and_a_stick's Avatar
 
Member Since: Nov 2012
Location: North California
Posts: 4,737
Received 551 Likes on 311 Posts

Default

Originally Posted by JustinStrife
I would not take a turbo car to the track. I don't like the throttle response. I don't like replacing turbos. I don't like how it muffles the engine symphony. I don't like how it generates massive heat.

Different strokes for different folks
Old 12-09-2012, 06:49 PM
  #16  
JustinStrife
Team Owner
 
JustinStrife's Avatar
 
Member Since: Mar 2006
Location: San Diego
Posts: 27,567
Received 96 Likes on 66 Posts

Default

Originally Posted by SBC_and_a_stick
I would not take a turbo car to the track. I don't like the throttle response. I don't like replacing turbos. I don't like how it muffles the engine symphony. I don't like how it generates massive heat.

Different strokes for different folks
And yet they have better fuel economy, more efficiency, don't require a taller hood, and have way more power potential.

You shouldn't be taking any boosted Corvette to the track anyway. The root style blowers especially are known for major heat soak issues.
Old 12-09-2012, 06:56 PM
  #17  
JoesC5
Team Owner
 
JoesC5's Avatar
 
Member Since: Sep 1999
Location: Springfield MO
Posts: 41,733
Received 1,699 Likes on 1,213 Posts

Default

PD any day over a turbo for a street engine.

Get notified of new replies

To Roots or Turbo?

Old 12-09-2012, 06:59 PM
  #18  
SBC_and_a_stick
Safety Car
 
SBC_and_a_stick's Avatar
 
Member Since: Nov 2012
Location: North California
Posts: 4,737
Received 551 Likes on 311 Posts

Default

Originally Posted by JustinStrife
And yet they have better fuel economy, more efficiency, don't require a taller hood, and have way more power potential.
Odds are pretty good the LT4 will make 750hp or so. A Rotrex is 3-5% more efficient so the peak power would be slightly higher. A turbo could probably make close to 800hp. Less than 50hp on top of 750hp going from Rotrex to turbo might be worth the tradeoffs to you, but not to me. In fact, at 750hp I wouldn't worry at all about getting more power, but rather HOW to make it in a more civilized manner.

Turbos are fantastic for A to B cars. 1.4L turbo diesels make sense. Maybe that way the gas savings vs. other FI will be enough to service those turbines when they blow up or blow up something else.
Old 12-09-2012, 07:00 PM
  #19  
BuckyThreadkiller
Successful Plumber
Support Corvetteforum!
 
BuckyThreadkiller's Avatar
 
Member Since: Feb 2001
Location: Top of the hill, 3rd mailbox on the right. Texas
Posts: 43,830
Likes: 0
Received 13 Likes on 6 Posts
CF NCM Ambassador
CI 6-7-9-10 Veteran
St. Jude Donor '06-'07-'08-'09-'10
NCM Member '09

Default

Wasn't there a photo of an LT1 on a test stand wearing twin turbos that GM had pulled offline in a serious hurry.
Old 12-09-2012, 07:03 PM
  #20  
Racer X
Le Mans Master
 
Racer X's Avatar
 
Member Since: Jul 2000
Location: North Dallas 40 TX
Posts: 6,449
Received 4,373 Likes on 2,065 Posts

Default

Turbos. They don't have nearly the same paralytic drag, so they produce the more horsepowe at the same boost.

They do not "produce" heat. All of the heat of an engine is produced via combustion. Turbos will absorb heat and radiate it to some degree wherever they are located. Proper design and shielding will reduce this issue. They will heat the intake charge due to compression, but do so all forced induction conpressors, no matter how they are driven.

The only type of racing where turbos have not dominated roots or other engine driven compressors is drag racing.

Do they require a different style of driving? Yes, but any competent driver should be able to master it, if properly trained or they have a desire to learn.

Today's DCTs reduce one of the turbo's issues, coming off boost when lifting the throttle for shifting. No lift, no reduced boost.

Turbo's are a bit easier to intercool.

Thread Tools
Search this Thread
Quick Reply: Roots or Turbo?



All times are GMT -4. The time now is 09:00 AM.