2jzge cam craziness

[suprastupid]

I just re installed my cams on the 2jzge. Now I always knew there was a sequence to follow but didnt know it was as detailed as it is. ie install then rotate cams loosten certain bolts then torque again numerous times... I did it this way but wonder why its done this way and if its actually needed, and who done it what way?

 

[aphxero]

I do 4,5,3,6,2,7,1 in two passes, 5 then 11 ftlb. rotate and check. Done it about 30 times. Make sure bolts arent dry.

 

[te72]

Reason you do it is for the same thing as the pattern of bolting down the head... you would damage a metal object that long if you just started at one end and strapped things down tight all in one swoop. Nobody likes (nor does metal) stress that isn't needed, right?

 

[suprastupid]

I did mine according to this...I assume youve had no problems? I thought it was 14ftlbs?
http://arrc.epnet.com/autoapp/9347TOY/9347TOY03_Camshaft_s_.htm

 

[te72]

I don't remember doing mine to be honest, but haven't had any issues. I may not have even been the one to put my head back on, it may have already been assembled by the time I got back down to the shop... That appears to be some sort of Alldata tech page, no?

 

[suprastupid]

Not sure, I did a Google search and found that. I was thinking about it and when rotating the cams it has you loosen up the cam caps on only the ones with lobes facing up. Making me think its just a extra precaution to get the cam caps seated fully and torqued with no pressure from the valves on them. Seem logical?

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