FATS vs Gearing. Even EdyJun didnt clarify!

KramS4 · 12-18-2005, 10:37 AM

I am a little bit confused about gearing.
Even searching through the old messages I couldn't figure if there is difference between US spec. S4 gearing and the Euro-spec.

My car is a 2000 Euro-spec. Audi S4. Now stage 3*

My car does more than 60mph @ 4200rpm and more tan 97mph@6500rpm. Reading MarkP`s site (http://ctny.audiworld.com/mark/s4/gears/ ) I thought that the gearing was the same, but in many posts regarding FATS (including those tables for comparison with other cars) there are allusions to FATS being ~60 to 90mph. Something like ~58mph to 91mph.

I read the EdyJun site and there the things become even worst. Here FATS are more likely 4200-6500 with my gearing http://forums.audiworld.com/s4/msgs/2126704.phtml , but in the line below it is 60mph to 90mph http://forums.audiworld.com/s4/msgs/2148457.phtml.

So what is the correct FATS that I need to make? 4200-6500rpm or ~60-90mph ?

Preliminary run with 5 people on board, 40oC outside and running 17psi of boost showed 5,2seg 4200-6500rpm (~63mph to 97mph). According to EdyJun`s estimation ~310whp.

Thanks

PS: mboxS4, soon I will post all my "via crucis" on making my car run again.

Ochlockonee · 12-18-2005, 10:56 AM

So I guess there is a little difference in gearing.
We use the 60-90 number to compare to other vehicles since publications use it as an acceleration benchmark.

KramS4 · 12-18-2005, 11:02 AM

what about this http://forums.audiworld.com/s4/msgs/2126704.phtml ?

Should it be used only by Euro-Spec S4?

Many Thanks

VerrÜckt · 12-18-2005, 11:10 AM

PSmalls::DoggieStyle · 12-18-2005, 11:13 AM

Shifted at or damn near redline in 3rd below 100 MPH. FATS ended at ~90 MPH.

KramS4 · 12-18-2005, 11:53 AM

Interesting. So, MarkP and EdyJun worksheets are wrong. They are using 1,23 gearing for 3rd gear.

US-Spec should use 1,305 3rd .

I used this: http://ctny.audiworld.com/mark/s4/gears/

Is that correct?

Ochlockonee · 12-18-2005, 11:56 AM

EdyJun · 12-18-2005, 02:26 PM

Pop3 · 12-18-2005, 11:03 PM

KramS4 · 12-19-2005, 03:26 AM

12-18-2005, 10:37 AM	#1
KramS4 New Member Account #: 88233 Join Date: Feb 2005 Posts: 148	FATS vs Gearing. Even EdyJun didnt clarify! I am a little bit confused about gearing. Even searching through the old messages I couldn't figure if there is difference between US spec. S4 gearing and the Euro-spec. My car is a 2000 Euro-spec. Audi S4. Now stage 3* My car does more than 60mph @ 4200rpm and more tan 97mph@6500rpm. Reading MarkP`s site (http://ctny.audiworld.com/mark/s4/gears/ ) I thought that the gearing was the same, but in many posts regarding FATS (including those tables for comparison with other cars) there are allusions to FATS being ~60 to 90mph. Something like ~58mph to 91mph. I read the EdyJun site and there the things become even worst. Here FATS are more likely 4200-6500 with my gearing http://forums.audiworld.com/s4/msgs/2126704.phtml , but in the line below it is 60mph to 90mph http://forums.audiworld.com/s4/msgs/2148457.phtml. So what is the correct FATS that I need to make? 4200-6500rpm or ~60-90mph ? Preliminary run with 5 people on board, 40oC outside and running 17psi of boost showed 5,2seg 4200-6500rpm (~63mph to 97mph). According to EdyJun`s estimation ~310whp. Thanks PS: mboxS4, soon I will post all my "via crucis" on making my car run again.

12-18-2005, 10:56 AM	#2
Ochlockonee Member Account #: 72863 Join Date: Mar 2004 Posts: 2,953	One of my logs says 57.59 mph @ 4195.75 rpm and 90.81mph @ 6503.25 rpm. So I guess there is a little difference in gearing. We use the 60-90 number to compare to other vehicles since publications use it as an acceleration benchmark. __________________ "No, a flux capacitor is not compatible with a ham sandwich."

12-18-2005, 11:02 AM	#3
KramS4 New Member Account #: 88233 Join Date: Feb 2005 Posts: 148	So, then my FATS is not comparable... but, what about this http://forums.audiworld.com/s4/msgs/2126704.phtml ? Should it be used only by Euro-Spec S4? Many Thanks

12-18-2005, 11:10 AM	#4
VerrÜckt AudiWorld Super User Account #: 52044 Join Date: Feb 2003 Posts: 16,416	Correct. That's about the same as I have logged.

12-18-2005, 11:13 AM	#5
PSmalls::DoggieStyle Elder Member Account #: 69223 Join Date: Jan 2004 Posts: 30,285	Me three. Shifted at or damn near redline in 3rd below 100 MPH. FATS ended at ~90 MPH.

12-18-2005, 11:53 AM	#6
KramS4 New Member Account #: 88233 Join Date: Feb 2005 Posts: 148	Interesting. So, Interesting. So, MarkP and EdyJun worksheets are wrong. They are using 1,23 gearing for 3rd gear. US-Spec should use 1,305 3rd . I used this: http://ctny.audiworld.com/mark/s4/gears/ Is that correct?

12-18-2005, 11:56 AM	#7
Ochlockonee Member Account #: 72863 Join Date: Mar 2004 Posts: 2,953	That graph is for US spec 6 speed trans ratios. It won't work for you :-/ __________________ "No, a flux capacitor is not compatible with a ham sandwich."

12-18-2005, 02:26 PM	#8
EdyJun Member Account #: 48484 Join Date: Dec 2002 Posts: 2,849	<tracking> __________________ 2000 Audi S4 STG 3 FATS = 3.66 w/ 91 oct AIM: EdyJun 11 September 2001 In their honor. In their memory. <font color="red">---------------------------------------------------------- <u><big> <a href="http://homepage.mac.com/edyjun1/S4/index.htm">EdyJun's S4 Directory (FAQ, DIY, Info, Tips and Help) </a> </big> </u>---------------------------------------------------------- </font>

12-18-2005, 11:03 PM	#9
Pop3 Junior Member Account #: 57166 Join Date: Jun 2003 Posts: 1,378	It's the same as in my EURO 99MY . 147kmph at 6500rpms __________________ Next mods: chipset with overboost option and stg3 rims (folk+nittos) and interior ledlights

12-19-2005, 03:26 AM	#10
KramS4 New Member Account #: 88233 Join Date: Feb 2005 Posts: 148	Mine is definitly a 1.23 3rd gear showing +152Km/h @ 6500rpm

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