Re: Superchevy Dyno Article - Saab Performance Bulletin Board - Saabnet.com
The banner above is an advertisment - if it asks you to download software, please ignore.
Site News -
[General |
Members |
C900 |
9000 |
NG900 & OG93 |
93 |
95 |
NG95 |
99 |
Sonett |
Vintage Models |
Clubs |
Other Cars |
FAQs |
Gifts |
Member Photo Galleries |
Member Directory |
Classifieds |
Manuals |
*Buddy Registry |
*Mileage Registry |
Polls |
What's New |
Raffle |
Photo of the Month |
Sponsors]
[Main Performance Bulletin Board | BBFAQ |
Prev by Date | Next by Date | Post Followup ]
Member Login / Signup - Members see fewer ads. - Latest Member Gallery Photos
Re: Superchevy Dyno Article
Posted by Drew in Houston [Email] (more from Drew in Houston) on Tue, 12 Apr 2005 10:06:36
In Reply to: Superchevy Dyno Article, Vigge, Tue, 12 Apr 2005 06:56:32
Members do not see ads below this line. - Help Keep This Site Online - Signup
Well, turbo charged cars are great but they're not magic. :)
The speed in which torque is generated may come-on a bit more quickly compared to a similar non-turboed car(exagerated by being in a lower gear) but as long as you're within the resolution/range of the dyno sensors the physics of the whole system always apply. And really, regardless of what gear was used in a puny 2.0 I4 turbo, the magnitudes of the numbers being considered (and their relative rate of change) is still WELL within what a big cubic inch V-8 would produce all across the board--a Dynojet can accurately measure HP to something like 1600 HP, which only addresses the span issue directly (not the issue here), but imagine the rate of change for a system like that when they crack-open two or 3 big 4 barrels. I'm not sure what you're implying would be the difference? Tire flex maybe? I can see how resolution could be slightly decreased in the intermediary points, but that still makes the peak numbers fairly accurate at near steady-state conditions at the instant when power drops-off at high rpms.
What I'm saying is that "Rules" i.e. physics always apply without prejudice to the point where the rubber contacts the drums. And by calculation it dosen't matter what gear is used, except that greater system losses would be experienced in lower gears due to larger frictional losses with the gearbox--resulting in lower HP numbers, not higher. I'm not debating that a 1:1 ratio isn't most accurate, but I am suggesting the possibility that lower overall numbers would be realized in a 3rd vs. 4th run, not higher.
I drive my car about every other day and what I've noticed is that it consistantly stacks-up very well with cars that it dosen't have a right-to, in the real world, under real driving conditions.
Is it completly crazy to suggest that Saab may have produced some extra hot HOT's? It does look like Rico has one too. Taking-away his extra losses due to the autobox and considering his numbers were from a Mustang Dyno, his results are VERY similar to the numbers from my car.
posted by 67.10.24...
Posts in this Thread:
- Limp home mode, rico, Sat, 9 Apr 2005 06:36:50
- Possible?, Drew in Houston, Sun, 10 Apr 2005 22:49:38
- Are you still running the SMBC?, AeroTim, Sat, 9 Apr 2005 14:17:53
- Suggestion, get a suitable SW :) nm, Vigge, Sat, 9 Apr 2005 10:00:45
- Re: Suggestion, get a suitable SW :) nm, rico, Sat, 9 Apr 2005 10:03:16
- Re: Suggestion, get a suitable SW :) nm, TERRY, Sat, 9 Apr 2005 10:57:20
- Re: Suggestion, get a suitable SW :) nm, Dean, Sat, 9 Apr 2005 10:56:23
- Re: Suggestion, get a suitable SW :) nm, Vigge, Sat, 9 Apr 2005 10:51:40
- link to my page, rico, Sat, 9 Apr 2005 06:38:02
Members do not see ads below this line. - Help Keep This Site Online - Signup
Post a Followup
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.
StateOfNine.com
|
SaabClub.com
|
Jak Stoll Performance
|
M Car Covers
|
Ad Available
|
Random Saabnet.com Member Gallery Photos (Click Image)
This is a moderated bulletin board - Posting is a privilege, not a right.
Unsolicited commercial postings are not allowed (no spam). Please, no For Sale or Wanted postings, SERIOUSLY.
Classifieds are to be listed in The Saab Network Classifieds pages.
This is a problem solving forum for over 250,000 Saab owners, so expect to see
problems discussed here even though our cars are generally very reliable. This is not an anything goes
type of forum. Saabnet.com has been a moderated forum since 1988. For usage guidelines, see the
Saabnet.com Mission and Purpose Page. Please remember that you are
not anonymous. Site Contact | Site Donations | Other Sites by SP -
Poverty2Prosperity.org | Run Club Menlo Park | ScreenBot
Site Members do not see red text instructions, bottom of the page anchor ads, or box ads.
Click here to see all
the Site Membership Benefits!