Porsche 964 Carrera RS — Fuji Speedway (new) / 2005-09-26

Name: Porsche 964 Carrera RS — Fuji Speedway (new) / 2005-09-26
Uploaded: 2009-08-17
Duration: 10 min 12 s
Description: First time at Fuji Speedway. The front anti-roll bar was changed F2/5 → F4/5 → F5/5, taking the time 2:05 → 2:02 → 2:01.7. The final setting is self-assessed as a failure for excessive understeer, with improvements listed for braking, first gear at the chicane and the line through 100R (written 95R in the original).

Full course · ADVANCE track day

2005-09-26 confirmed · 2:01.7 · 10:12 · 1,849 views

Best: 2:01.7
Period: 2005-09-26 confirmed
Circuit: Fuji Speedway (new)
Course: Full course
Category: ADVANCE track day
Tire: ADVAN A048 MH F225/45/17 R255/40/17
Length: 10:12

Summary

First time at Fuji Speedway. The front anti-roll bar was changed F2/5 → F4/5 → F5/5, taking the time 2:05 → 2:02 → 2:01.7. The final setting is self-assessed as a failure for excessive understeer, with improvements listed for braking, first gear at the chicane and the line through 100R (written 95R in the original).

Original description — as written at the time

The new Fuji Speedway, at the Advance track day This is from a time attack after two hours of running at Fuji Speedway for the first time. They say the NSX cannot show its real performance because of an ABS fault. With no lock-ups, the line it takes can be seen as a model line for an FR/MR car. Temperature: 17-18 degrees Tyres: ADVAN A048 MH F:225/45/17 R:255/40/17 Tyre pressure: 2.3 Anti-roll bar: F5/5 R2/3, set stiff, towards understeer For reference, when I did 1:36:997 at Sportsland SUGO Anti-roll bar: F2/5 R2/3, a setting biased towards oversteer Time was 2 minutes 1.7 (lap 2), everything else in the 2 minutes 2-3 range Since it was my first time at Fuji Speedway, I went to the drivers' briefing too, aiming to be a model driver, and got to Fuji Speedway 3 hours before the start. Heading to the paddock thinking it overlaps with Twin Ring Motegi, I got ready to run while sorting out the high-mount wing on the Porsche 993 GT2. I had pictured only the second half of the circuit being changed, but it is a completely different course now, which surprised me. At first I ran with the same anti-roll bar settings as Sportsland SUGO, but the second section goes into oversteer straight away. I cannot get on the throttle as I want, so from the chicane onwards I end up running the whole second section in 2nd. Time 2 minutes 05 seconds. The second section gives me an impression close to Twin Ring Motegi, which I do not much like, so I am a bit deflated. After about 10 minutes, to move the setting towards understeer I stiffen the anti-roll bar, F2/5 to F4/5. That change makes it possible to use 3rd in the second section. Best lap in the last hour comes down to the 2 minutes 2 second range. I thought F4/5 was probably the best setting, but for the time attack I set it even further towards understeer, changing F4/5 to F5/5. The plan was to get through the 30-minute time attack on understeer. The time came up to 2 minutes 1.7, but if you look at the hairpin and so on you can see it has turned into understeer, understeer, then force it and oversteer, so in the end this setting is a failure. The video shows that thing you often see when you are scrapping on circuit, where you make a mistake right after the car ahead does, and I think that state of mind is the highlight. As I catch up I get oversteer and end up dropped again, the typical worked-up state everyone has experienced. Conclusions - Not making full use of the A048's performance (there is more to find on the brakes) - I should go into the chicane in 1st - Change the anti-roll bar back to F4/5 - Get a tow from the GT2 (・・・・・happens all the time・・・・・most effective) - Consider whether to take 100R around the outside or use the same line as the NSX With that I think I should get into the 1 minute 59 second bracket. Next time is 20 October, and I wonder if I can aim for 1 minute 59. The Porsche 993 RSR (a turbo car?) at the start of the video is a 1 minute 53 second car

Show the original (Japanese)

新FISCO アドバンス走行会にて初めてのFISCO２時間走行後のタイムアタック中の動画です。 NSXはABSの故障で本来の性能を発揮できていないとのことです。ロックしていない状態での走行ラインはFR・MR車のモデル的な走行ラインと考えられます。気温：17-18度タイヤ：ADVAN A048 MH F:225/45/17 R:255/40/17 空気圧：2.3 スタビ：F5/5 R2/3 堅めアンダー方向で設定参考SUGO1：36：997の時にはスタビ：F2/5 R2/3 オーバー気味の設定タイムは2分1秒7（2周目）それ以外は2分2-3秒台始めてのFISCOということで、ドラミも参加して模範的なドライバーを目指し開始3時間前にはFISCO入り。茂木とだぶるなあと考えながらパドックへポルシェ993GT2のウイングハイマウント化の手配などしながら走行準備後半セクションのみの変更をイメージしていましたが、サーキットは全く別のコースになっており、びっくり。最初はSUGOと同じスタビで走るも後半セクションがすぐにオーバーになってしまう。アクセルが思うように踏めないので、シケイン以後の後半セクションは全て２速で走る羽目になる。タイムは2分05秒後半セクションはあまり好きでない茂木に近い印象を受けてげんなり気味。１０分ほどでアンダー方向の設定に変更するためスタビを堅めに変更F2/5からF4/5へこの変更をしたことにより、後半セクションで３速の使用が可能になる。後半１時間のベストラップは2分2秒台へ。 F4/5の設定がおそらくベストかとおもったが、タイムアタック時には更にアンダーの方向性でセッティングF4/5からF5/5へ変更タイムアタック３０分をアンダーで乗り切る方向タイムは2分1秒7まであがりましたが、ヘアピン等を見て頂ければわかりますが、アンダーアンダー力任せオーバーみたいな感じになってしまっており、結果的にはこのセッティングは失敗です。動画はサーキットでの競り合い時によく見られる前車のミスの後に自分がミスする感じで、この心理が見所かとおもいます。追いついてくるとオーバーを出してしまい、結局離される誰もが経験する典型的な興奮状態です。結論的な分析・A048の性能を生かし切れていない（ブレーキはまだ詰められる）・シケインは１速での進入にするべき・スタビはF4/5に再変更・GT2にスリップさせてもらう（・・・・・よくあることで・・・・・最も効果的）・95Rを大外からいくかNSXと同じラインにするかの検討これでおそらく1分59秒台には入ってくるかと思います。次回は10月20日1分59秒をねらえるかなあと思ってます。動画初めに出てくるポルシェ993RSR（ターボ車？）は1分53秒台の車両

Typos are left as they were. The Japanese original is kept alongside the translation. Third-party names are masked.

Addenda and corrections · 2026-10-03

Date changed from “2005-09” to “2005-09-26” (confirmed). Basis: an article the recorder wrote at the time (dated 2005-09-27).

The original text above has not been altered. What was learned later is added here.

Day logNotes from the day1

Times and set-up are the figures the recorder wrote down at the time. They have not been checked against official timing. Days with no video are included.

2005-09-26 confirmed air 17–18 °C

Car	Best	Tire	Set-up
Porsche 964 Carrera RS	2:01.7	ADVAN A048 MH F225/45/17 R255/40/17	F5/5 R2/3 · 2.3 bar
Porsche 993 GT2 M003 (Clubsport)	1:59.x	Unknown

Videos from this day No.19 · No.21

Show the original (Japanese)

最初はSUGOと同じスタビで走るも後半セクションがすぐにオーバーになってしまう。アクセルが思うように踏めないので、シケイン以後の後半セクションは全て２速で走る羽目になる。タイムは2分05秒１０分ほどでアンダー方向の設定に変更するためスタビを堅めに変更F2/5からF4/5へこの変更をしたことにより、後半セクションで３速の使用が可能になる。後半１時間のベストラップは2分2秒台へ。 F4/5の設定がおそらくベストかとおもったが、タイムアタック時には更にアンダーの方向性でセッティングF4/5からF5/5へ変更タイムは2分1秒7まであがりましたが、ヘアピン等を見て頂ければわかりますが、アンダーアンダー力任せオーバーみたいな感じになってしまっており、結果的にはこのセッティングは失敗です。

Excerpt from the original text; typos left as written.

Same periodSame period, same circuit

Same period, same circuit
	Period	Car	Best	Tire	Length	Summary
	2005-09-26 confirmed	Porsche 964 Carrera RS	2:07	ADVAN A048 MH	3:06	Around lap four of the first Fuji Speedway visit. Checking the strong turn-in with the anti-roll bar at F2/5, plus an introduction to a 993 GT2 with a high-mounted wing. Includes a scare being pushed out towards the grass before the chicane.
	2005-09-26 confirmed	Porsche 964 Carrera RS	No lap time	Unknown	6:02	Third session with the 964 RS and an NSX at Fuji Speedway.

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