Good point Craig...>

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Good point Craig...> Posted by PGAero [Email]

(#1143) [Profile/Gallery] (more from PGAero) on Fri, 19 Nov 2004 14:27:52

In Reply to: Remember to add heat to the equation too..., Craig, Fri, 19 Nov 2004 13:05:55 Members do not see ads below this line. - Help Keep This Site Online - Signup

You are right about hot air wanting to be bigger than cool air...

It's also true that as air expands (like when it leaves the combustion chamber for the exhaust DP, or goes through the turbo) it cools...so the more it can expand, the cooler it gets...Zeke mentioned the benefits of a cooler EGT earlier.

There are so many variables in a discussion of this topic...and I made the unfortunate mistake of over-simplifying by neglecting the effects of one on the others! Well, the discussion has been good...and I'm sure that there have been some Theses written on such things...and there are still studies going on...and on...and on... on the matter...Which is good. And turbos make it all the more complicated because it links exhaust conditions to intake conditions. Oh geeze!!!

But I digress, and ramble. My appologies. (I guess I really love this stuff)

~Peter

posted by 153.90.198...

_______________________________________ Past: '06 9-5 Combi, AT, Polar/Black '04 9-5 Aero Wagon, AT, Nocturne/Granite '03 9-5 Aero Wagon, 5spd, Polar/Black '03 9-5 Aero Wagon, AT, Steel/Charcoal '00 9-3 Viggen, 5D, Silver/Black '93 9000 Aero, 5MT, Cirrus/Black (Owned this one twice... my favorite) '86 900 SPG, Edwardian/Buffalo Grey

Posts in this Thread:

What would happen if..., adel, Wed, 17 Nov 2004 11:32:18
- You'd spend lots of money...., David Ingram, Thu, 18 Nov 2004 08:04:47
  - A larger downpipe is not done just for performance...., zeke, Thu, 18 Nov 2004 08:45:26
    - Re: A larger downpipe is not done just for performance...., David Ingram, Thu, 18 Nov 2004 09:08:44
      - Speeking of high Exhaust Temps!....>, PGAero , Fri, 19 Nov 2004 11:24:34
  - oops, misread post...., David Ingram, Thu, 18 Nov 2004 08:07:33
    - Torque/HP relationship....>, PGAero , Thu, 18 Nov 2004 16:47:27
      - Be careful oversimplifying......, zeke, Fri, 19 Nov 2004 05:05:47
        Zeke, You're right.......Take 2...., PGAero , Fri, 19 Nov 2004 11:16:17
        Remember to add heat to the equation too..., Craig, Fri, 19 Nov 2004 13:05:55
        Good point Craig...>, PGAero , Fri, 19 Nov 2004 14:27:52 <-- Viewing This Message
        Right Craig, I forget if it was Charles or Boyle..., zeke, Fri, 19 Nov 2004 14:27:06
        Zeke...Good point...>, PGAero , Fri, 19 Nov 2004 14:38:03
        At the moment, I'm not doing anything...., zeke, Sat, 20 Nov 2004 08:08:58
        Cool Zeke..., PGAero , Sat, 20 Nov 2004 14:43:09
    - Can sincerely say that you'd feel the benefit >, Bill Davies, Thu, 18 Nov 2004 10:03:13
      - Bill, that's not Anders in that thread......, zeke, Thu, 18 Nov 2004 10:14:28
        OK - thanks for picking that up, and >, Bill Davies, Thu, 18 Nov 2004 11:14:17
- Downpipe vs cat. back systems, SWEDISH DYNAMICS, Wed, 17 Nov 2004 18:49:45
  - That's sound advice..., Street, Thu, 18 Nov 2004 08:25:59
  - Hmmm....I wonder how many different downpipes..., zeke, Thu, 18 Nov 2004 04:44:02
- You'd see a performance gain from the 3" downpipe..., zeke, Wed, 17 Nov 2004 12:33:00
  - This is exactly why, Adel, Thu, 18 Nov 2004 06:51:10
    - Im thinking, adelii, Thu, 18 Nov 2004 11:42:15

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