C7 Tech/Performance Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Diffuser question

Thread Tools
 
Search this Thread
 
Old Aug 15, 2015 | 11:51 AM
  #1  
n_coming's Avatar
n_coming
Thread Starter
Instructor
 
Joined: Aug 2015
Posts: 130
Likes: 2
Default Diffuser question

How much downforce will a rear diffuser get me?
Reply
Old Aug 15, 2015 | 01:36 PM
  #2  
Z06 1of38's Avatar
Z06 1of38
Drifting
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Aug 2014
Posts: 1,497
Likes: 682
Default

Originally Posted by n_coming
How much downforce will a rear diffuser get me?
None. It's a diffuser. It is to improve air flow under the car.

Splitters and rockers will increase down force. Diffusers will help those work optimally.

Last edited by Z06 1of38; Aug 15, 2015 at 01:39 PM.
Reply
Old Aug 15, 2015 | 02:56 PM
  #3  
n_coming's Avatar
n_coming
Thread Starter
Instructor
 
Joined: Aug 2015
Posts: 130
Likes: 2
Default

Originally Posted by Z06 1of38
None. It's a diffuser. It is to improve air flow under the car.

Splitters and rockers will increase down force. Diffusers will help those work optimally.
I thought it generated a suction effect to help plant the car?
Reply
Old Aug 15, 2015 | 03:13 PM
  #4  
Higgs Boson's Avatar
Higgs Boson
Race Director
15 Year Member
Conversation Starter
Community Favorite
Top Answer: 5
 
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
Default

Originally Posted by n_coming
I thought it generated a suction effect to help plant the car?
On a street car it isn't going to do anything appreciable. You need to consider the whole combination or airflow enhancements on the whole car. Look at an F1 car, each piece affects the other. Just adding a diffuser to your basic C7 coffee car isn't going to anything but look kind of cool.
Reply
Old Aug 15, 2015 | 03:38 PM
  #5  
n_coming's Avatar
n_coming
Thread Starter
Instructor
 
Joined: Aug 2015
Posts: 130
Likes: 2
Default

Originally Posted by Higgs Boson
On a street car it isn't going to do anything appreciable. You need to consider the whole combination or airflow enhancements on the whole car. Look at an F1 car, each piece affects the other. Just adding a diffuser to your basic C7 coffee car isn't going to anything but look kind of cool.
Well that wasn't going to be everything I got. I was gona get weapon x front splitter and rockers and I have a z06 spoiler. I was just wondering about how much a diffuser would help. I wanted to go as much downforce as I could without adding a whole lot of drag, so without a wing.
Reply
Old Aug 15, 2015 | 04:08 PM
  #6  
Higgs Boson's Avatar
Higgs Boson
Race Director
15 Year Member
Conversation Starter
Community Favorite
Top Answer: 5
 
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
Default

Originally Posted by n_coming
Well that wasn't going to be everything I got. I was gona get weapon x front splitter and rockers and I have a z06 spoiler. I was just wondering about how much a diffuser would help. I wanted to go as much downforce as I could without adding a whole lot of drag, so without a wing.
I don't think you will get a huge effect from any of it.
Reply
Old Aug 15, 2015 | 04:35 PM
  #7  
n_coming's Avatar
n_coming
Thread Starter
Instructor
 
Joined: Aug 2015
Posts: 130
Likes: 2
Default

Originally Posted by Higgs Boson
I don't think you will get a huge effect from any of it.
From all of the stuff I said or just the diffuser?
Reply
Old Aug 15, 2015 | 05:14 PM
  #8  
Higgs Boson's Avatar
Higgs Boson
Race Director
15 Year Member
Conversation Starter
Community Favorite
Top Answer: 5
 
Joined: Jul 2007
Posts: 10,961
Likes: 2,643
From: Texas Hill Country
Default

Originally Posted by n_coming
From all of the stuff I said or just the diffuser?
any of the bolt on body mods, imo. do it for looks, not because you are going to get some performance increase.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Aug 15, 2015 | 06:57 PM
  #9  
FYREANT's Avatar
FYREANT
I'm Batman..
Supporting Lifetime
10 Year Member
Pro Mechanic
Liked
Community Favorite
 
Joined: Apr 2014
Posts: 6,142
Likes: 921
From: Lehigh Acres FL
Tech Contributor
Default

Higgs is right. The reason being is the aero that the cookie cutter kits provide is not really drastic enough to net you the kind of performance you would be looking for. They are primarily just "ground effects" for looks.
Reply

Get notified of new replies

To Diffuser question





All times are GMT -4. The time now is 06:04 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE