S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

question.....what kind of hp difference does cooling like this cause?

Thread Tools
 
Search this Thread
 
Old 04-14-2005, 07:09 PM
  #1  
Junior Member
Thread Starter
 
oldyellar's Avatar
 
Join Date: Mar 2004
Posts: 1,307
Likes: 0
Received 0 Likes on 0 Posts
Default question.....what kind of hp difference does cooling like this cause?

<center><img src="http://pictureposter.audiworld.com/71155/dyno_fan.jpg"></center><p>this is the only fan provided when I dyno'd. I wish I kept the VAG logs for intake temps.
Old 04-14-2005, 07:10 PM
  #2  
AudiWorld Super User
 
Mike2kS4's Avatar
 
Join Date: Jun 2002
Posts: 12,088
Likes: 0
Received 0 Likes on 0 Posts
Default

What's the difference between runs? That should give you a clue.
Old 04-14-2005, 07:12 PM
  #3  
ATH
Elder Member
 
ATH's Avatar
 
Join Date: Jun 2003
Posts: 11,377
Likes: 0
Received 0 Likes on 0 Posts
Default

It's not even blowing on the IC's...
Old 04-14-2005, 07:12 PM
  #4  
Senior Member
 
DeutschDriver's Avatar
 
Join Date: May 2004
Posts: 6,149
Likes: 0
Received 0 Likes on 0 Posts
Default

damn! i'd pack the IC area with dry ice to compensate! (or is that chating?
Old 04-14-2005, 07:14 PM
  #5  
LCP
AudiWorld Expert
 
LCP's Avatar
 
Join Date: Mar 2000
Posts: 26,551
Likes: 0
Received 1 Like on 1 Post
Default How long did the dyno run last?

I'd say for the first 2-3 seconds of the run it wouldn't make a big difference, and then it could possibly rob you of 25% or more of your power (depending on ambient temps, octane and software sensitivity to temperature changes).
Old 04-14-2005, 07:17 PM
  #6  
AudiWorld Super User
 
AUDIS4BI:Vintage's Avatar
 
Join Date: Jul 2003
Posts: 12,570
Likes: 0
Received 0 Likes on 0 Posts
Default We only had a little fan for one of our IC's and a big fan like that for the radiator at Harman's

dyno day. They were use to STI front mounts...what can you do?
Old 04-14-2005, 07:17 PM
  #7  
AudiWorld Super User
 
reefer_bob's Avatar
 
Join Date: Oct 2002
Posts: 14,321
Likes: 0
Received 0 Likes on 0 Posts
Default

That's poop. I wouldn't even dyno with out the proper fans.
Old 04-14-2005, 07:18 PM
  #8  
Junior Member
Thread Starter
 
oldyellar's Avatar
 
Join Date: Mar 2004
Posts: 1,307
Likes: 0
Received 0 Likes on 0 Posts
Default see thats what I thought.....my whp run was ......

the third run so heat soak had to have been real bad.
Old 04-14-2005, 07:19 PM
  #9  
Junior Member
Thread Starter
 
oldyellar's Avatar
 
Join Date: Mar 2004
Posts: 1,307
Likes: 0
Received 0 Likes on 0 Posts
Default

how about that fan and a leaf blower for each IC?
Old 04-14-2005, 07:20 PM
  #10  
Junior Member
Thread Starter
 
oldyellar's Avatar
 
Join Date: Mar 2004
Posts: 1,307
Likes: 0
Received 0 Likes on 0 Posts
Default

yea this shop was for sti's and evo's......we didn't know about the fan till we got there.


Quick Reply: question.....what kind of hp difference does cooling like this cause?



All times are GMT -8. The time now is 01:50 PM.