rocker clarificoation

[punkmechanic]

I found a post that says the same thing as the hypermax instructions and my chiltons manual and I still dont believe it, or am missing something.

How can I just "turn the engine timeing to 11 o'clock, and torque all the rockers to 20 ft/lbs (27nm)" and not have a bunch of tapping when I fire this beast off?

I have always rotated the engine between each cylinder and done them one at a time, if intake is coming up then exhaust is closed so on and so forth.

Why is this different. I see from multiple sources that this is what Im supposed to do but can someone help me understand how there is a point in rotation that NO valve is in actuation?

thanks,
Justin

 

[Double-S-Diesel]

they only will tighten so far, there is no lash adjustment like the old motors.

 

[punkmechanic]

sorry for the typo in the title first off,

and thanks for the info. this is really strange to me but Im gonna do it and get this thing running.

 

[Diesel JD]

I don't know that its advisable but myself and several others simply bolted them on wherever the engine happened to be when it stopped and torqued them down to spec and called it good. I think we get away with it since there is no adjustment on the valve lash or valve timing as was already mentioned. Good luck sounds like you're almost there!

 

[punkmechanic]

seems like I get to a point and then realize that I missed this or notice somthing that I want to fix (pulled the old fuel water separator from under the master cylinder, rewire a few things, etc)

Its coming along though, slow and sure.

 

[RLDSL]

There are a few different methods listed, officialy the manual states some wild haired method or going round and round making sure that the rockers you are torquing are on pistons that are at the bottom of their throw so the valves dont hit or some such rot. I think this is in there so folks ramming them down with air tools dont bonk anything in the lifters don't collaps faster than the air tools can ram the bolt down., just a guess .
Personally, I always run them down by hand and I'm so slow there's nothing to worry about

 

[punkmechanic]

my rule is if its internal i dont use air tools. im not the fastest but i dont get many combacks either

 

[Diesel JD]

I think its kind of sloppy workmanship to use air tools on a part where precision is required. They're for big nasty fasteners that can't easily be gotten by hand...but I'm not a mechanic by trade and I have a lot of respect for you guys that do it well, and if doing it well can include air tools in places I wouldn't think to use them... so be it. What did you decide to do with the old fuel/water sep? Mine is bypassed and I have yet to add another sep(bad I know)