Option — Shōwa Car Tuning & Buyers Guide (2000 Edition)

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About this issue

180 available scans from Option — Shōwa Car Tuning & Buyers Guide (2000 Edition), in right-to-left reading order. Japanese OCR and English translation drafts are available throughout. Drafts have not received exhaustive image proofreading; unreadable source remains recorded in the archival data.

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Page 133 — English draft translation

6.

The A31 Cefiro sparked a boom in four-door drift cars. Its excellent controllability and stylish body remain appealing, and it is still active at drift spots around the country. Its only real weakness may be a lack of power. Big One specializes in drift-car modifications and solved that shortcoming with an engine swap, choosing the RB25DET, an upper-tier RB-series engine… [copy continues].

18.

Transferred from an , it produces about 300 hp with increased boost. Why choose an engine swap for more power? Tajima’s answer: “To secure low- and mid-range torque and durability.” The RB20 lacks punch, and fitting a larger turbo makes it an abrupt, peaky setup. The 500 cc larger RB25DET delivers torque throughout the range, is easier to drive, and is less prone to failure. It also costs about half as much as an RB26DETT, making it well suited to a drift build. On the road, abundant low-speed torque makes tight corners easy. Its power also lets the driver hold a deep drift angle and cover distance with ease. Worth a look for anyone who wants their Cefiro to stand out!

28.

The Cefiro is a four-door sedan that shares its engine and drivetrain with the Laurel. Its front-strut and rear multi-link suspension layout is the same as the Silvia’s. Main engines included the RB20DE, a 2.0-liter naturally aspirated inline-six rated at 155 PS, and the turbo RB20DET rated at 205 PS. The turbo model’s peak output was lower than the Skyline Type M’s because it was tuned for everyday usability and response. A 2.5-liter RB25DE joined the range in the 1992 facelift, but no turbo version was offered. The 1994 full model change switched the car to front-wheel drive.

Captions and page details
4.

NISSAN

3.

WV2500

1.

Showa-era cars revived through drifting: A31 Cefiro.

2.

The engine bay itself remains stock. The engine, ECU, and wiring harness are from an ECR33 (with modifications required). Because the intake-pipe routing differs, it was fabricated from aluminum pipe. The stock radiator works, but anyone planning to push hard in the midsummer heat should consider a larger unit.

8.

…overcame it.

12.

…of the… [fragment].

9.

Only the driver’s seat was replaced with a bucket seat. The auxiliary gauges display boost, oil temperature, oil pressure, and water temperature. The six-point roll cage is intended to protect the occupants and increase body rigidity.

22.

ECU technology keeps advancing. The A31 uses an 8-bit ECU, while the ECR33 uses 16-bit. An RB25DET swap can be made to work with the A31 ECU after changing its setup, but faster processing improves tuning. Big One therefore changed the ECU and harness together for ECR33 parts. It feels especially good at half throttle.

19.

A3

20.

Cefiro

23.

Reuse of a stock Supra intercooler.

25.

The Cefiro uses a front-to-rear intercooler layout. Rather than forcing in a large, cross-flow GT-R-size core, sourcing a stock Supra intercooler from a dismantler is much cheaper. Have a shop fabricate the piping.

24.

So this is what an A31 can be… [caption].

26.

Debuted as a sibling model to the Laurel!

30.

…the sedan… [fragment].

29.

Debuted in 1988 (Showa 63).

34.

With the intercooler installed. Piping fabrication cost about ¥30,000.

33.

Main specifications: A31 RB20DET (2.0-liter turbo, 205 PS).

36.

Option

35.

131