I'm not an automotive engineer (not nearly smart enough for that) but my comment was based on two things. Note that I didn't want to turn this into a flame-fest, but my thoughts were:
First, as an automaker, seems to me you should built in a safety margin, so that it will last for a reasonable amount of time. Wonder why everyone loves Porsche? They're built very tank-like, like Saab (used to) be. They prove it at every endurance race, when some insane number of finishers are Porsches. I worked at a Porsche shop in high school, and remember marvelling over all the intricate castings; every part of the cars is well thought out and like kinetic sculpture. If you build a high performance car, you should expect that it may spend some time being driven in a spirited manner. It may be driven like a grocery getter, but not many enthusiasts buy Caravans for trackdays, autocross, or whatever.
Second, flogging a car on the street is NOT all that hard on it, compared to driving on track, whether autocross or big track. If you drive it at over 7 tenths, it becomes a self-limiting problem, because you die, or end up in jail. On the track, you see much higher cornering and braking loads, along with sustained heavy throttle application. Again, not an engineer, but I'm guessing that your EGT's would be higher on a lap of say, Mid-Ohio, than you could ever get them on the street(hopefully someone has some facts). Even after a 1 minute autocross run, the the fans are running, it's HOT under the hood, and the brakes and tires are HOT. I spend alot of time left foot braking to get the beast to rotate, which I guess keeps EGT's up somewhat, even under base boost.
I've done occasional top-speed quests on every car I owned, and I'm guessing most enthusiasts do the same. I've "only" had my Aero up to ~130 indicated (uphill), while extricating myself from a road rage situation. Not saying going this fast on the street is smart, by any means, but it's pretty easy to get a 225hp car going very fast on a straight road. It's the turning and stopping that's hard :-)


posted by 24.154.21...

• Viggen Piston Failure, Jamie, Mon, 31 May 2004 11:37:48
  • I just talked to my mechanic, GM, Tue, 1 Jun 2004 11:17:52
    • Re: I just talked to my mechanic, jp, Wed, 2 Jun 2004 08:10:16
    • Yes, I like your mechanic, davenew, Tue, 1 Jun 2004 13:22:58
      • My plugs had less than 5k - bcpr7es-11, Steve88SiS, Tue, 1 Jun 2004 16:31:39
        • More boost Steve??, KevinY, Tue, 1 Jun 2004 18:23:59
          • I'll lower the compression ratio, Steve88SiS, Tue, 1 Jun 2004 21:35:03
    • I change mine with every oil change, ckpaden, Tue, 1 Jun 2004 13:21:19
      • i 2nd and do the same...., kooch, Tue, 1 Jun 2004 18:25:37
        • I was told by...., GM, Tue, 1 Jun 2004 19:56:07
          • $50/plugs + 4.5 qts Mobil 1 (= ~ $18) = $68/oil change!, WASSAAB, Tue, 1 Jun 2004 20:11:46
            • Re: $50/plugs + 4.5 qts Mobil 1 (= ~ $18) = $68/oil change!, GM, Wed, 2 Jun 2004 06:46:32
  • I'm thinking the Viggen is not a long-term keeper, jc, Tue, 1 Jun 2004 08:18:52
    • Build an engine with all forged internals?, Dave in Houston, Tue, 1 Jun 2004 09:45:12
    • I wonder why we aren't hearing of this occurring, AdamB , Tue, 1 Jun 2004 09:10:08
      • Aeros brake aswell, Vigge, Tue, 1 Jun 2004 10:05:25
        • So would the crankcase ventilation TBA, Nathaniel, Tue, 1 Jun 2004 10:48:43
          • Re: So would the crankcase ventilation TBA, Vigge, Tue, 1 Jun 2004 23:21:35
          • Sorry, I mean Technical Service Bulletin, see link, Nathaniel, Tue, 1 Jun 2004 18:15:30
  • Re: Viggen Piston Failure, ed smith, Tue, 1 Jun 2004 07:58:26
  • we already know, davenew, Mon, 31 May 2004 18:49:01
  • I feel your pain & frustration ..., Pierre, Mon, 31 May 2004 14:02:44
  • sustained high speeds over 100mph? n/m, Tim, Mon, 31 May 2004 12:48:15
    • Re: sustained high speeds over 100mph? n/m, Jamie, Thu, 3 Jun 2004 13:29:09
    • Re: sustained high speeds over 100mph? n/m, Tim, Mon, 31 May 2004 14:31:54
      • We need to remember Talledega challenge, steveC, Mon, 31 May 2004 17:50:07
        • Re: We need to remember Talledega challenge, Christophe, Tue, 1 Jun 2004 19:28:30
        • Its all about fuel economy, nickR, Tue, 1 Jun 2004 14:29:45
      • What does this have to do with anything?, Alex C., Mon, 31 May 2004 16:03:12
        • here's my guess, davenew, Mon, 31 May 2004 19:00:41
        • Re: What does this have to do with anything?, Tim, Mon, 31 May 2004 18:38:52
        • Re: Nothing, AndyJ, Mon, 31 May 2004 18:32:54
          • Re: Nothing, Tim, Mon, 31 May 2004 18:51:47
            • Re: Nothing, Andyj, Mon, 31 May 2004 19:36:19 <-- Viewing This Message
            • Re: Nothing, GM, Mon, 31 May 2004 19:03:20
              • Re: Nothing, Tim, Mon, 31 May 2004 19:11:22
                • Re: Nothing, AndyJ, Mon, 31 May 2004 19:45:58
          • a few words, jak , Mon, 31 May 2004 18:48:39
  • Was your car modified in any way from stock? n/m, 85SLED, Mon, 31 May 2004 12:19:09
    • Re: Was your car modified in any way from stock? n/m, Jamie, Thu, 3 Jun 2004 13:37:11
    • Re: Was your car modified in any way from stock? n/m, Dean, Mon, 31 May 2004 13:06:00
      • Re: Was your car modified in any way from stock? n/m, spg900t, Tue, 1 Jun 2004 19:29:17
        • Re: Was your car modified in any way from stock? n/m, Jamie, Thu, 3 Jun 2004 13:41:08

No Site Registration is Required to Post - Site Membership is optional (Member Features List), but helps to keep the site online
for all Saabers. If the site helps you, please consider helping the site by becoming a member.

• Prev by Date: Re: Viggen required improvements - in my opinion, Dean, Mon, 31 May 2004 19:36:07
• Next by Date: Re: Nothing, AndyJ, Mon, 31 May 2004 19:45:58
• Main Performance Bulletin Board

StateOfNine.com

SaabClub.com

Jak Stoll Performance

M Car Covers

Ad Available

The content on this site may not be republished without permission. Copyright © 1988-2024 - The Saab Network - saabnet.com.
For usage guidelines, see the Mission & Privacy Notice.
[Contact | Site Map | Saabnet.com on Facebook | Saabnet.com on Twitter | Shop Amazon via TSN | Site Donations]

Random Saabnet.com Member Gallery Photos (Click Image)