Engine vibration at high rpm

Well I disconnected the ac compressor, the pulley was making annoying noises anyways. And its not hot enough in portland oregon for very long to really need ac. I have not taken out for a drive after this...

Next step is to buy a new harmonic balancer, worst case scenerio is to take the old and new one to a machine shop to have the new one matched if it doesnt fit.

I assume the manufacture purposely made them fit tight than be loose....

Actually my engine supposedly has low miles, and i can concur with the compression test and how clean it is inside. Also the valvetrain is very quiet and nice.

My spark plug gap is .44 with the blaster coil and pertronix ignition. Ill have to borrow my friends timing gun again to see where my timing is at. I was at 9 degrees btdc last time i checked, I moved the distributor one notch advance to see if it helped, car seems to be more responsive but thats about it.

Edited June 19, 201113 yr by 71Nissan240Z