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.
Page 144 — English draft translation
The 3.1-liter stroker and Garrett T04R make this a 580-PS build, but the suspension is equally serious: Ohlins shocks paired with TRD springs in a custom setup to put that power to the ground. This car has a pedigree too—it was displayed at Katano Shokai’s booth at the Nagoya Performance Car Show last year, with not a detail out of place… [text continues].
Captions and page details
Katano Shokai MA70 Turbo.
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The 80-series setup… [fragment].
The 7M is still capable! It is quick in the quarter mile too!
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A 3.1-liter 7M-GT with a T04R turbo. Despite the M-series engine’s old design, it produces a formidable 580 PS and has the potential to cut down newer machines!
Ito used to drag race an ST185. “I chose this Supra because I fell in love with its body lines. It is basically a drag build, but it is fun to wrestle its understeer through corners too!”
This machine is built to an almost unbelievable standard. Ito mainly runs it at drag events, but occasionally takes it to a circuit. The 70-series Supra has fallen behind the 1JZ as the 7M tuning-parts lineup has gradually shrunk, but do not forget that it remains an excellent platform capable of all-around performance if you tune it with care!
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It is fully equipped with fuel controllers, a fuel-pressure gauge, and even an air/fuel-ratio meter. They are neatly integrated into the dashboard, which is a nice touch.
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…the setup!
With this much power, a front-mount intercooler is essential. The bumper has been cut to draw in as much cool air as possible.
The key to tuning the 7M!
If you increase power, replacing the head gasket is a must!
The standard 7M-GT made 230 PS, but its turbo has considerable capacity… [sentence continues].
Even a stock-bottom-end setup can make roughly 350 PS. But the stock gasket is weak and fails easily, so replace it with a metal gasket. Also, even with only an air-filter and muffler upgrade, boost around 0.8–1.0 kg/cm² can trigger fuel cut. Disable the boost-cut function through the main ECU.
Plus… .
MA70 Supra…
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