WHAT DOES JDM MAZDA RX-7 FD 13B-REW ENGINE FOR SALE MEAN?

For every apex (corner of the triangle) on the rotor, there’s a seal that retains the corresponding chamber airtight, and each apex seal is loaded having a flat spring to maintain contact with the housing. Apex seals and springs are predicted to use out immediately after close to a hundred,000 miles or less, but there are actually other triggers