Some models with the manual transmission can grind while shifting up into fifth gear due to the misalignment of the fifth gear shift fork. The transmission will need to be removed, and fifth gear, the synchronizer sleeve set, and the fifth gear shift fork will need to be replaced.
Car Problem Reports
Honda Accord Misaligned Fifth Shift Fork May Cause Transmission to Grind on Upshift
Honda Accord Problem
Drive Train Affected: Manual Transmission
Average Mileage: 257,000 mi (180,000 mi - 325,000 mi)
Visitor, 1994 Honda Accord, Manual Transmission, 180,000 mi
WHEN SHIFTING IN 5TH GEAR FROM 4TH AT HIGH RPM GEARS GRIND BUT DOESNT GRIND AT 1500RPMS OR LOWER