I'm slowly piecing together my BBK and tonight while looking at the FSM and torquing my manifold to turbo I noticed the book has two
different torque ratings for the 2 nuts and the 2 front studs. See pics. My question is what is everyone else torquing theres to? I don't want no leaks~!!

The first pic (most commonly showed one on EvoM) shows them to be torqued at 38 +/- 3 Check for circle



This second pic (from the engine overhaul section of the FSM) it shows them to be torqued at 47 +/- 3 which is a good 9 ft/lbs higher than the other page. Check for circle



Am I blind or what? It's taken from the Evo 9 cd so it should be good. I currently have them set to 40 ft/lbs but wanted to hear from others. Any help would be much appreciated!

 

Well the second is clearly for a IX. I do not know if anything was changed between the VIII and IX but that could be the difference but I have no idea. I went off the torque specs from the first.

What you have should be fine. I see no problem with that.

 

it doesn't matter, i always add 5ftlbs to the number in the FSM when it comes to non-internals.

 

Thanks - I may bump it up a little bit to 45 or so. It's just weird how there is a ~10lb variance between the two pages and/or models. So far I haven't found any other torque rating out of the ordinary..

 

Yeah. let me know if you figure out anything more bro

 

Well, in both pictures they used the same Newton Meter value of 64 +/- 5Nm. That's roughly 47 ft-lbs.