On some models the manual transmission fifth gear can grind on upshift due to a misaligned fifth shift fork. The transmission will have to be removed and disassembled and the fifth gear, the fifth sleeve set and the fifth gear shift fork will have to be replaced to repair this issue.Google+
Car Problem Reports
Honda Prelude Misaligned Fifth Shift Fork May Cause Transmission to Grind on Upshift
Honda Prelude Problem
Drive Train Affected: Manual Transmission
Visitor, 2001 Honda Prelude, Manual Transmission, 117,000 mi
only happens when im at high rpms in fourth engaging into fifth gear. But also when im trying to put my car into reverse, it hesitates.