nicholas

I hear what you are saying.
But, mine is making vibrasions when revved pasted 5500rpm. I just thought of a damn good example to explain the vibration.

If you hold a radio controlled car in your hand, in the air, and rev the crap out of it, with the remote, to get high revs.This is what the vibration feels like, only louder and more vibrasion because the car is obviously larger than the radio controlled car's body.
People told me that it will be smooth revving when balanced. Did you ever rev a toyota to max rpm?
That is what I want. The toyotas of today are sooo smooth in the whole rev range.
Even at 7000rpm for the 1300cc engines.

Thanks anyway for the reply. About the GX head?
No way in hell I am going to skim and port it.
If you know how difficult it is (and how precious it is) to get a GX head you will understand.
Thanks anyway for the help.