how reliable is the rotary engine?

Question

Accepted Answer

The **13B-REW rotary** in this '92 RX-7 has a reputation that's a bit polarizing, but here's the honest truth: it's **reliable *if* you follow the rules**, and demanding if you don't!

## The Buyer's Reality Check

The 13B-REW introduced **hardened apex seals** specifically to handle twin-turbo boost pressures—an improvement over earlier rotaries. However, rotary engines have four Achilles' heels you need to respect:

1. **Apex seals** – These are your primary wear items. They'll eventually need attention (typically 60k-100k miles), but with proper care they can go the distance. I spotted another '96 FD in our market with **100,676 miles**—impressive for a rotary!

2. **Oil consumption by design** – The engine injects oil into combustion chambers to lubricate seals. Low oil = catastrophic failure. Frequent oil changes (every 3,000 miles) and checking levels religiously is non-negotiable.

3. **Thermal sensitivity** – Overheating kills rotaries fast. The cooling system needs to be in top shape, and you should avoid shutting off a hot engine immediately—let it cool down first.

4. **Flooding** – Cold starts and short trips can "flood" the engine with unburned fuel. The prescription? Regular redline "Italian tune-ups" to burn off carbon deposits.

## The Good News on *This* Car

At **63,067 miles** (101,496 km), your prospective RX-7 has already surpassed the average mileage (50,758 miles) for currently available FDs in our market. The fact that it's listed as **"Original & Highly Original"** suggests previous owners respected rotary maintenance protocols. That's actually encouraging!

The sequential twin-turbo system adds complexity (more vacuum lines to check!), but the base engine architecture is proven.

**Bottom line**: A well-maintained rotary can be a joy for 100k+ miles. A neglected one can fail at 30k. Want to know what specific maintenance records to ask the dealer for, or would you like to compare a few other RX-7s currently available?

https://classic.com/m/mazda/rx-7/3rd-gen/jdm-variants/

Lot J5679: 1992 Mazda RX-7

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Lot J5679: 1992 Mazda RX-7

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