Air Conditioner and H/P? - Corvette Forum

Go Back   >
Log In 
Register FAQ Search Today's Posts Mark Forums Read Vendor Directory

C5 Z06 Discussion
General Z06 Corvette Discussion, LS6 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track Sponsored by
PFYC

Air Conditioner and H/P?

Reply
 
 
 
Thread Tools Search this Thread
Old 07-14-2014, 09:54 AM   #1
bobby777
CF Senior Member
Thread Starter
 
Member Since: Dec 2003
Location: las vegas nv.
Posts: 2,296
Thanked 5 Times in 5 Posts
Default Air Conditioner and H/P?

With the A/C on--How much H/P does it take to run?
bobby777 is offline   Reply With Quote
Old 07-14-2014, 11:59 AM   #2
4XLR8N
CF Senior Member
 
4XLR8N's Avatar
 
Member Since: Apr 2012
Location: Brighton MI
Posts: 2,379
Thanked 72 Times in 71 Posts
Default

It depends upon engine rpm (how fast you are turning the compressor), but generally around 10 hp +/-. Most vehicles (with computers) have a switch that will turn off the a/c automatically at WOT, so it doesn't affect max hp.
4XLR8N is offline   Reply With Quote
Old 07-14-2014, 12:23 PM   #3
bobby777
CF Senior Member
Thread Starter
 
Member Since: Dec 2003
Location: las vegas nv.
Posts: 2,296
Thanked 5 Times in 5 Posts
Default

Quote:
Originally Posted by 4XLR8N View Post
It depends upon engine rpm (how fast you are turning the compressor), but generally around 10 hp +/-. Most vehicles (with computers) have a switch that will turn off the a/c automatically at WOT, so it doesn't affect max hp.
Thx for the info--I wonder how much the 1/4 mile times would be slower with a/c on?

Last edited by bobby777; 07-14-2014 at 12:38 PM.
bobby777 is offline   Reply With Quote
Old 07-14-2014, 03:30 PM   #4
C5Dobie
CF Senior Member
 
Member Since: Jan 2014
Posts: 720
Thanked 5 Times in 5 Posts
Default

Quote:
Originally Posted by bobby777 View Post
Thx for the info--I wonder how much the 1/4 mile times would be slower with a/c on?
Negligable I'd imagine since again, it should turn off @ WOT. Mythbusters did a show on this and found that a vehicle is more efficient running w/ the AC on and windows up as opposed to AC off and windows down, now - AC off and windows up would probably be the most ideal, but then again in a Z06 at the track you'd be sweating your *** off....can't run the 1/4 w/ the windows down though can ya?
C5Dobie is offline   Reply With Quote
Old 07-14-2014, 06:44 PM   #5
bikeriderga
CF Senior Member
 
bikeriderga's Avatar
 
Member Since: Aug 2011
Location: Atlanta GA
Posts: 1,890
Thanked 66 Times in 60 Posts
Default

Real men don;t use AC!!

Of course they will smell like BigFoot (sorry, couldn''t resist)!
bikeriderga is offline   Reply With Quote
Old 07-14-2014, 07:21 PM   #6
bobby777
CF Senior Member
Thread Starter
 
Member Since: Dec 2003
Location: las vegas nv.
Posts: 2,296
Thanked 5 Times in 5 Posts
Default

Quote:
Originally Posted by C5Dobie View Post
Negligable I'd imagine since again, it should turn off @ WOT. Mythbusters did a show on this and found that a vehicle is more efficient running w/ the AC on and windows up as opposed to AC off and windows down, now - AC off and windows up would probably be the most ideal, but then again in a Z06 at the track you'd be sweating your *** off....can't run the 1/4 w/ the windows down though can ya?
Well if your good--you could have your left fingers on the power windows--last yellow push windows and let the clutch-out at the same time-might take some practice-
bobby777 is offline   Reply With Quote
Old 07-15-2014, 10:31 AM   #7
Moto One
CF Senior Member
 
Moto One's Avatar
 
Member Since: Sep 2006
Location: Truckee CA
Posts: 834
Thanked 19 Times in 19 Posts
Default

Auto crossing it will cost you .02 on avg.

Mark
Moto One is offline   Reply With Quote
Old 07-15-2014, 11:35 AM   #8
2003Evo
CF Senior Member
 
2003Evo's Avatar
 
Member Since: Jul 2011
Location: Canton Mi
Posts: 521
Thanked 11 Times in 11 Posts
Default

its a 1/4 mile suck it up, just turn it off as soon as you stage at the tree.
2003Evo is offline   Reply With Quote
Old 07-15-2014, 04:28 PM   #9
danieloneil01
CF Senior Member
 
Member Since: Apr 2011
Location: Tulsa Ok
Posts: 1,803
Thanks: 0
Thanked 0 Times in 0 Posts
Default

The A/C should never be on while at the track. *******s who do use A/C, risk those on the track
danieloneil01 is offline   Reply With Quote
Old 07-16-2014, 09:59 PM   #10
bobby777
CF Senior Member
Thread Starter
 
Member Since: Dec 2003
Location: las vegas nv.
Posts: 2,296
Thanked 5 Times in 5 Posts
Default

I just read an article--2008 Z06 505 h/p--lost 18 ponies-with all acc. on the dyno -peak h/p--im thinking c5 z05 would be down 14 h/p with air on-yes all acc. on take power--ac being the most-
bobby777 is offline   Reply With Quote
Old 07-18-2014, 10:29 AM   #11
Mig233
CF Senior Member
 
Mig233's Avatar
 
Member Since: Jan 2011
Location: Springfield NJ
Posts: 263
Thanked 5 Times in 5 Posts
Default

I can notice the difference. Mostly because the engine decelerates faster than with the A/C compressor off. I have to change the timing of my shifts to compensate.
Mig233 is online now   Reply With Quote
Old 07-18-2014, 02:25 PM   #12
lane_viper
CF Member
 
lane_viper's Avatar
 
Member Since: Mar 2014
Location: Goodlettsville Tennessee
Posts: 99
Thanked 5 Times in 5 Posts
Default

Quote:
Originally Posted by C5Dobie View Post
Mythbusters did a show on this and found that a vehicle is more efficient running w/ the AC on and windows up as opposed to AC off and windows down
Actually, they found Going less than 50 mph it is more efficient to leave the windows down, but going greater than 50 mph it is more efficient to use the A/C.
lane_viper is offline   Reply With Quote
Old 07-18-2014, 02:38 PM   #13
philadd
CF Senior Member
 
philadd's Avatar
 
Member Since: Jan 2008
Location: Houston TX
Posts: 365
Thanked 2 Times in 2 Posts
Default

Quote:
Originally Posted by danieloneil01 View Post
The A/C should never be on while at the track. *******s who do use A/C, risk those on the track
I don't track my car, so forgive my ignorance, but... how does running the A/C pose a risk to other drivers on the track?
philadd is offline   Reply With Quote
Old 07-18-2014, 06:56 PM   #14
rjwz28
CF Senior Member
 
rjwz28's Avatar
 
Member Since: Sep 2007
Location: Sunniest city on Earth
Posts: 4,022
Thanks: 0
Thanked 11 Times in 10 Posts
Default

Quote:
Originally Posted by philadd View Post
I don't track my car, so forgive my ignorance, but... how does running the A/C pose a risk to other drivers on the track?
Air conditioning produces condensation which will end up becoming water on the track... that's about the only way it could possibly be construed to endanger others
rjwz28 is offline   Reply With Quote
Old 07-18-2014, 10:21 PM   #15
bobby777
CF Senior Member
Thread Starter
 
Member Since: Dec 2003
Location: las vegas nv.
Posts: 2,296
Thanked 5 Times in 5 Posts
Default

Quote:
Originally Posted by philadd View Post
I don't track my car, so forgive my ignorance, but... how does running the A/C pose a risk to other drivers on the track?
OK--forget this thread--it takes H/P 10-20 to run a/c=drag on the motor
bobby777 is offline   Reply With Quote
Old 07-19-2014, 09:23 AM   #16
ptindall
CF Senior Member
 
ptindall's Avatar
 
Member Since: Aug 2006
Location: Picking on the weakest kid in the yard.
Posts: 21,625
Thanked 27 Times in 11 Posts
Default

Quote:
Originally Posted by rjwz28 View Post
Air conditioning produces condensation which will end up becoming water on the track...

Correct.
ptindall is offline   Reply With Quote
Old 07-19-2014, 10:54 AM   #17
rjwz28
CF Senior Member
 
rjwz28's Avatar
 
Member Since: Sep 2007
Location: Sunniest city on Earth
Posts: 4,022
Thanks: 0
Thanked 11 Times in 10 Posts
Default

Quote:
Originally Posted by danieloneil01 View Post
The A/C should never be on while at the track. *******s who do use A/C, risk those on the track
Quote:
Originally Posted by philadd View Post
I don't track my car, so forgive my ignorance, but... how does running the A/C pose a risk to other drivers on the track?
Quote:
Originally Posted by rjwz28 View Post
Air conditioning produces condensation which will end up becoming water on the track... that's about the only way it could possibly be construed to endanger others
Quote:
Originally Posted by ptindall View Post
Correct.
It wouldn't be problem if only one car was doing it, since the amount of water would barely amount to droplets at speed... but a whole road course full of cars running their air conditioning certainly could catch somebody a bit off guard when they catch a slick spot mid-corner
rjwz28 is offline   Reply With Quote
Old 07-19-2014, 02:41 PM   #18
onspeed
CF Senior Member
Support Corvetteforum!
 
Member Since: Aug 2011
Location: Lubbock TX
Posts: 1,003
Thanks: 0
Thanked 7 Times in 7 Posts
Default

Quote:
Originally Posted by rjwz28 View Post
It wouldn't be problem if only one car was doing it, since the amount of water would barely amount to droplets at speed... but a whole road course full of cars running their air conditioning certainly could catch somebody a bit off guard when they catch a slick spot mid-corner
Most endurance racing cars have air conditioning... there are even rules in place regarding how hot the cabin can get, so I don't think a small bit of condensation would do anything on a road course, especially once the track is up to temp.

Drag strip... maybe.
onspeed is offline   Reply With Quote
Old 07-19-2014, 06:04 PM   #19
rjwz28
CF Senior Member
 
rjwz28's Avatar
 
Member Since: Sep 2007
Location: Sunniest city on Earth
Posts: 4,022
Thanks: 0
Thanked 11 Times in 10 Posts
Default

Quote:
Originally Posted by onspeed View Post
Most endurance racing cars have air conditioning... there are even rules in place regarding how hot the cabin can get, so I don't think a small bit of condensation would do anything on a road course, especially once the track is up to temp.

Drag strip... maybe.
Yeah, that was my initial thought... but I have only been on a road course with maybe eight or ten other cars, so it wouldn't be any sort of a problem anyway
rjwz28 is offline   Reply With Quote
Old 07-19-2014, 11:18 PM   #20
mammoth713
CF Senior Member
 
mammoth713's Avatar
 
Member Since: Mar 2010
Location: Los Angeles
Posts: 528
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by 2003Evo View Post
its a 1/4 mile suck it up, just turn it off as soon as you stage at the tree.


Both my LS1 z28 and c5z idle/run differently when the AC is on vs off.. Both drive much more "normal" with the AC off..
mammoth713 is offline   Reply With Quote
Go Back   Corvette Forum >
Reload this Page
  • Air Conditioner and H/P?
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    1961 & 1962 H.P. Generator 1102268 SIXTYTWO C1 & C2 Parts 0 09-26-2015 12:36 PM
    99 FRC H/P power estimates frcz C5 Tech 10 06-20-2015 06:26 PM
    For Sale 63, 64, and 65 H.P. AC screens SIXTYTWO C1 & C2 Parts 0 06-19-2015 12:56 PM
    How much h.p. with #60 injectors and bap? robinde C5 Forced Induction/Nitrous 14 11-23-2007 10:00 PM
    Real zo6 h.p. don420 C6 Z06 Discussion 74 01-19-2007 11:13 AM


    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    Posting Rules
    You may not post new threads
    You may not 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 Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump


    All times are GMT -4. The time now is 09:11 AM.