The explorer has a timing chain, not a belt.

I believe the Explorer does NOT use a timing belt, but rather a timing chain

The fastest spinning neutron star that we've found so far is XTE J1739-285, which spins 1122 times every second. It was found by NASA's Rossi X-Ray Timing Explorer (RXTE) satellite. The most rapidly spinning pulsar, however, remains PSR J1748 2446ad, which spins 716 times a second. This pulsar was found by a team at Montreal's McGill University.

The Ford Explorer engines use a timing CHAIN

timing CHAIN