Post by
Hijacker »
https://forums.nicoclub.com/hijacker-u9394.html
Sun Mar 02, 2008 5:23 pm
You had them reversed and they broke? Even reversed, they shouldn't break. That's really odd.
Anyways, you can order new ones from Nissan. They're identical to the shims/guides in a Sentra SE-R. However, there are 17 different thicknesses for the shims. Nissan wants you to actually measure the distance from the top of the rocker guide to the top of it's adjoined valve stem (the one the shim would be on) That way the rocker arm stays level between the valves and it doesn't have uneven wear from the cam lobe.
The only issue is actually measuring that crap. Nissan has special tool to mount a dial gauge to and it's rarer than about anything I've ever tried to buy. My suggestion is to buy the rocker guides, then measure their thicknesses and order matching shims. It's not perfect, but it's better than tossing random shim thicknesses in.
Or you can send the head off to someone like Maxworks to get it shimmed.