Valve adjustment Sequence

[AMXguy]

Is there a reason you can't just bring each piston to TDC on the compression stroke and adjust the valve lash? I have the adjustment chart but it makes no sense why you couldn't just rotate the crank 1/4 turn at a time and adjust both valves in the firing order on tdc compression.  does the valve actually start lifting as it's on TDC or am I OK to do it this way?

[vinb]

This should help...

[AMXguy]

Thanks, that's easier to follow tham the chart I have with 4 moves.
 
 Still, why can't you bring it to TDC on each cylinder as the are on compression and adjust them then? it seems like at no time would the valves be more closed than on tdc compression? I'm not arguing with the chart I just don't understand why my way can't be as good or better. I have to assume the exhaust valve lobe is already tightening up on the lifter as the pistion hits TDC?

[femtnmax]

I have to assume the exhaust valve lobe is already tightening up on the lifter as the pistion hits TDC?

Yes.  Most performance cams have valve overlap at TDC to help high RPM power.   At TDC the intake valve is not done closing, and the exhaust valve is already starting to open.

[Chryco Psycho]

even on TDC firing when both lobes should b e closed a long duration cam is set more accurately doing it by the Mopar chart as you are on the back side of the lobe in each case

[Changin Gears]

I've always used the 4-position method but AMX has a a valid question.  Has anyone ever set them with 4 or 8 position method, then went back and checked with the easier follow-the-firing-order?

[quagmire]

I have.  It was no different either way.  If the lifter is on the base circle it doesn't matter what order you do them in.  I just rotate the engine while watching for valves that are closing, then I rotate it slightly more once it has stopped moving just to be sure it isn't opening already.  I spend a lot less time rotating the engine when I do it that way, just have to be sure you don't miss any!

[Oldschool]

I have done it both ways also.  It works the same. 6 of one--half dozen of the other.  So, either follow the chart, watch the valves and rotate the engine a few more degrees after the valve closes, or set TDC on the firing stroke and set the valves for that cylinder. All should have the cam lobe on the base circle.....        

[Aussie Challenger]

  Unless you know what you are doing and are experienced, do it according to the chart, simple peace of mind. Done once, done correctly.   
  It takes a lot more time to have to strip it down again to do it a second time.