I have a 94 Honda Prelude Si. The thing is when I'm driving and i shift the gears grind, and no i'm not new to manual. When you even do it perfect the gears grind, for example
i shift from 3 to 4 and it grinds for 1 sec and then it goes away. Does anyone have any ideas on what could be the problem?

 

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Syncro's are gonzo or you have no tranny fluid. Sync's are notorious for grinding in h23 trannnys, esp 3rd gear. Start with the little, less cost effective things to do. I ran half GM Syncromesh and half of the newest Honda MTF. It helps, but if your tranny/sync's are bad then it won't cure the problem, it'll just put a temporary band aid on things whilst curing a little bit of the grind.