RE Amemiya 13B SA22 RX-7

This car was a milestone for rotary tuning, pushing the limits of the older SA22C chassis and proving the potential of the 13B rotary engine in extreme conditions. Known for its performance in top-speed trials at Yatabe, it helped solidify RE Amemiya’s reputation before their more famous FD3S builds in the 1990s and 2000s.

This is from Option 1982.3

Translation:

Impression:

“The twin-turbocharged rotary power is intense. It can reach over 7000rpm in 3rd and 4th gears in no time, and has incredible acceleration. Before the start, I was told to hold it for a long time because it takes time to accelerate to 5th gear, but because of the wind, it lacked stability in the bank.

The rear suspension springs are also a little too stiff. It bounces. There is plenty of power, but because it bounces on the bank, I can’t rev it above 5000rpm. Even on a straight road, there was a lot of yawing, and the best I could do was pull it up to 7100rpm.

The charge pressure was 0.9/cm^2. The rear didn’t seem to fit well, so I think it would be better to make the spoiler bigger. Even so, it’s clear that it has the potential to reach 290 to 300km/h. There was nothing wrong with the engine, so it’s unfortunate that the conditions were bad. “ (Tsutsumi)

Translation:

RE Amemiya Motors

Amemiya Yumi

<Tuner’s words>

“I think the reason the rear suspension was so stiff is because the dampers (Hayashi 8-stage adjustable) were set to the stiffest so that it could withstand the G-forces of the bank. This engine is the same one that was used when it reached 288km/h, so this time we raised the gear ratio to aim for a good record. It was supposed to reach 7500rpm though. Well, it’s number one in the domestic class, so it’s fine.”

Translation:

No.1 domestic car

278.52km/h

Highest speed ever: 288.00km/h

Bank speed: 222km/h

Intense yawing made it impossible to push the pedal any further

RE Amemiya RX7 13B twin turbo

It’s actual speed is 300km/h, lost to the movement