I installed my nismo cams and i noticed that one of the cams (short intake cam) does not rotate as freely as the rest. When i put it in i noticed it was 180 degrees off so i had to rotate it. Well when i rotated that cam it was much harder to turn than the other 3. I then un bolted the cam caps re- lubed everything and re-installed it and torqued to spec. What the hell could be causing this? Has anyone ever experienced this?

Note the crank was turned so that the pistons would not interfere w/ the valves when rotating the cam.

 

Check end clearance and plastigauge the bearing surfaces to check clearance.

 

what happens if it shows it is rubbing. Do i have to get it machined?

 

The cam cam brackets are all marked, did you put them all back in the correct locations? They're marked with letters that corrospond to letters stamped on the heads.

 

Yea i kept all the cam caps in the correct locations. I think the clearance with the end of the cam is off

 

Sounds like you put one of the brackets back on updside down. Take pictures of the brackets on the cams and I can tell you if they are upside down.

 

thanks for the help guys. I got the problem solved. I had to lube around the end cap and that solved the problem.