kyddo112

Just got a 93 LS400 and I'm in the middle of adjusting the valve clearance using the Lextreme write uphttp://www.lextreme.com/valve_clearance.html)

With the crankshaft pulley marker on "0" and the cam gears lined up with the marker on the head, which valves am I supposed to check first? I was under the impression that I would use the first picture:



then rotate the crank 360* and use the second picture:



My problem is when I do it that way, the peak of the cam lobes seem to be pushing the valves/shims down. I measured the clearances on the second pic with the timing marks lined up (crank and cam gears) and was able to get a measurement since the valve shims weren't being pushed down. Can anyone help me with this.

Here is a pic of the Driver side exhaust cam being measured AFTER the crank was rotated 360*. You can see that the peak of the lobe is away and the valve is uncompressed.



And here is a pic of when the crank/cam gears are lined up to their markers.

Dirtybrd

You will check the valves where the peaks of the cams are facing 180 degrees away from the shim.

kyddo112

that's what i figured but wasn't sure. i found a service manual online and it showed it the opposite (correct way) of lextreme's site.

boss21

hoping someone can help, i have a 1UZ lexus motor i bought and the cams have been removed and are in a box, how do i differentiate between the left hand side bank and right hand side bank camshafts ?

python

iTrader: (4)

the only difference is intake vs exhaust cams...https://www.mylparts.com/v-1993-lexu...--engine-parts