From memory...

To reduce the clearance of:

The intake valve, roll the ecentric away from the cam.
The exhaust valve, roll the ecentric away from the cam.

To tighten the intake ecentric, the nut turns toward the cam.
To tighten the exhaust ecentric, the nut turns away from the cam.

Somehow, when you are tightening up the intake nut, you are rolling the ecentric. See how the tightening turns the ecentric towards the 'looser' postion?

Conversely, when you are tightening up the exhaust ecentric nut, you are rolling the ecentric tighter.

This is the only 'technique' explanation I can come up with. I'm going to guess you're tightening up the nut too much. Only takes a light touch, just a few foot lbs of torque. Personally, I've seen this when I've put a bit too much twist on one nut but never for all of them like you've described.



Quote Originally Posted by athflying79
This is my procedure. I roll the engine over till the intake and exhaust cam lobes are as close to down as possible on the cylinder I'm adjusting. Then loosen the eccentric and slip my .012 gauge in. I use a piece of wire to hold a bit of pressure on the eccentric to the feeler. Then proceed to tighten up the the eccentric nut. Before tightening to much, I will move the feeler around a bit to make sure I have the right clearance. If it feels good I tighten it down pretty good. Once I have done that I check again with the .012 feeler. Sometimes I'll try slipping in the .013 and the .011 just to be sure. At this point I have checked the clearance twice. I then move on to the next cylinder. Now once all are done, I can roll the engine over several times and it seems all my clearances go out of whack. Like I said, intakes loosen up, exhaust tightens up. It is pretty much uniform across all the valves. I am going to get up early on Sunday and swap all the eccentrics, just so I know I'm eliminating one possible cause. Then going to readjust all the valves again. Hopefully third time I get it. Then I will proceed to swapping the water pump out and getting to bleed the cooling system yet again. Any ideas on the valves are appreciated.