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 71 — English draft translation
...can make more peak power, but by itself it can leave weak low- and mid-range torque, making the car unpleasant on the street and sluggish when exiting corners on a circuit. Be careful. For high-revving builds, a 20-valve engine is advantageous. For up to 8,500 rpm, an AE111-based build is suitable; above that, an AE101 base may be better. Differences in rod thickness and piston shape are important...
Captions and page details
Key to naturally aspirated tuning: No. 1
Naturally aspirated tuning can certainly increase peak power by raising the rev limit...
...because of that.
AE86 Levin / Trueno
Its key feature is a slide-type throttle valve that moves up and down like a shutter. This reduces variation between cylinders and helps response.
The distributor must be changed to one intended for carburetors. In the past, a common method was to use a distributor and coil from a Toyota 4K engine...
This kind of tuning...
...too.
Can it make more power than Solex or Weber carbs? Sakai's Trueno with FCR carbs
MOBIL KIDS
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Sakai is another enthusiast who has become hooked on FCR carburetors. His engine is mostly stock, with 304-degree high-lift cams on both intake and exhaust, and an FCR carburetor setup...
Driftasemhi
...installed. He says they perform much better than Solex or Weber carbs. The reason is the evolution of the carburetor itself: Solex and Weber designs are fundamentally old, while the FCR was developed for motorcycles, so it is naturally a more advanced-performance carburetor.
This is Sakai's fourth Hachiroku, also set up for drifting. He values response and feel more than outright power.
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When converting to a carburetor setup, the fuel-pressure regulator must also be replaced. It is not included in the kit, so it must be purchased separately.
Fuel pressure monitoring
Installing a fuel-pressure gauge and monitoring fuel pressure is an important part of carburetor tuning.
Option
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