I have a 01 Prelude Base model and im in the process of replacing the head gasket im to the timing belt. Question: How many teeth off could the timing be off before u mate the piston and valves, and also im having hell lining up the timing gears bc when i set them the belt dosent line up to seat in the gears.

 

this may help you.

https://honda-tech.com/forums/honda-prelude-4/01-prelude-timing-belt-install-2591869/