Ive posted a couple weeks ago about misshifting and over revving so here it goes. It turns out there are 2 exhaust valves were slightly bent on a prelude motor because of over revving. Valves were replaced, head gaskets were replaced, and valves were adjusted. After all that, when you rev the motor, you can hear like a whinning noise. It sounds like its coming from the timing belt. What do you guys think the problem is? It also doesnt run the same as it used to...

 

If it's coming from the timing belt, then that's probably what the problem is Replace it or adjust it.