A SECRET WEAPON FOR JDM MAZDA RX-7 FD 13B-REW ENGINE FOR SALE

For each apex (corner of the triangle) around the rotor, there’s a seal that retains the corresponding chamber airtight, and each apex seal is loaded with a flat spring to maintain contact with the housing. Apex seals and springs are expected to use out after close to 100,000 miles or less, but there are actually other causes of apex seal failure