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Rotary Tech Tips: Exhaust System Configurations - Racing Beat

    https://www.racingbeat.com/mazda/performance/rotary-tech-tips/configurations.html#:~:text=A%20peripheral%20port%20application%20requires%204%20to%205,in%20length%2C%20with%20an%20exit%20diameter%20of%204-inches.
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Road Race Header 79-85 for RX-7 12A - Racing Beat

    https://www.racingbeat.com/RX7-1975-1985/Exhaust-Headers/16125.html
    Road Race Header 79-85RX-7 12A *. Instruction Manual. Racing Beat's Road Race Header is the first step in building a serious racing exhaust system. The engine-to-pipe flange is laser cut from 7/16" thick flat steel.

Exhaust Headers - Early Rotary & 1979-85 Mazda RX-7

    https://www.racingbeat.com/RX7-1975-1985/Exhaust-Headers.html
    Road Race Header 79-85 :: RX-7 12A. Racing Beat's Road Race Header is the first step in building a serious racing exhaust system. The engine-to-pipe flange is laser cut from 7/16" thick flat steel. Like all of the headers we manufacture, the Road Racing Header is constructed with 2... Part Number: 16125 Our Price $341.00 More Information

EXHAUST HEADER 12A, 79-85 RX7 DUAL OUTLET - Mazdatrix

    https://mazdatrix.com/product/exhaust-header-12a-79-85-rx7-dual-outlt/
    EXHAUST HEADER 12A, 79-85 RX7 DUAL OUTLET. Racing Beat 12A Exhaust Header, 79-85 RX7 Dual Outlet. SKU: 16125. Racing Beat’s Road Race Header is the first step in building a serious racing exhaust system. The engine-to-pipe flange is laser cut from 7/16″ thick flat steel. Like all of the headers they manufacture, the Road Racing Header is constructed with 2″ OD mild steel …

EXHAUST HEADER 12A, 79-80 RX7 - Mazdatrix

    https://mazdatrix.com/product/exhaust-header-12a-79-80-rx7/
    Racing Beat 12A Exhaust Header, 79-80 RX7. SKU: 16008. The Racing Beat RX-7 Header with Heat Exchanger Outlet Flange is intended only for use on the 1979-1980 RX-7. This header will bolt-up directly to the stock heat exchanger unit, or the Racing Beat Mini-Presilencer unit. While replacing the stock heat exchanger does not offer any significant horsepower increase, for …

EXHAUST SYSTEM SINGLE, 83 12A - Mazdatrix

    https://mazdatrix.com/product/exhaust-system-sngle-83-12a/
    EXHAUST HEADER 12A, 81-83 RX7. Racing Beat 12A Exhaust Header, 81-83 RX7. Actual header not shown in photo – oxygen sensor fitting only included on 1984-85 RX-7 GSL-SE header.

Rotary Tech Tips: Exhaust System Configurations

    https://www.racingbeat.com/mazda/performance/rotary-tech-tips/configurations.html
    Inside tube diameter required is 1.9 to 2.0 inches. If a megaphone is attached to the rear of the collector, the smallest area of the collector, where it joins the megaphone, should be 3 to 4 square inches: equal to a 28-inch hole diameter. A peripheral port application requires 4 to 5 square inches: equal to a 2.375-inch hole diameter.

I-95175 HEADER INSTALLATION - Racing Beat

    https://www.racingbeat.com/manuals/95175%20Header%2012A.pdf
    HEADER INSTALLATION 1981-85 RX-7 with 12A Engine. Part No. 16010, 16012, 16014. I-95175. 4789 Wesley Drive, Anaheim CA 92807 (714)779-8677 • Fax (714)779-2902. ... case of the nuts that hold the header to the engine, tighten the lower nuts first in each step. 3. (1981-83 only) Attach one end of the strap supplied to this side of the muffler ...

RacingBeat Performance Headers - MegaMiata

    https://megamiata.com/product/racingbeat-performance-headers/
    For the 1.8 liter Miata engine our header utilizes large diameter 1.7″ OD tubing for the primary tubing, and then collects into 2.375″ OD secondary tubing. The header does not require removal or replacement of any emissions control devices. Each header kit comes complete with installation instructions and replacement rear gasket.

Road Race Header Installation - Racing Beat

    https://www.racingbeat.com/manuals/16307%20RR%20Header.pdf
    On 1975 and earlier engines, the air injection nozzles should be plugged using Racing Beat Part No. 11301(1971-75 12A) if you plan to use the original intake manifold. 1984-85 RX-7 & 1986-92 RX-7 13B 6-Port Intake Applications The Racing Beat Road Race Header (PN 16127) is intended for use with all 1984-92 13B 6-port intake engines. However,

12a RX7 Racing Beat Streetport Exhaust - YouTube

    https://www.youtube.com/watch?v=JA7OonGSGI4
    1984 stockport 12a with rats nest delete, Racing Beat collected streetport header, presilencer, and muffler. Connecting pipe is stock diameter. If you're loo...

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