Are you saying torque to 120 inch pounds and then snug further to align witness marks? Also, how do you ensure that the centrifugal force of the turbo under operating conditions won't change the position of the witness marks as it torques itself down further?Now install the compressor wheel to 120 inch pounds.
If you had assembly balanced snug and tighten wheel till the witness marks made by shop on shaft and wheel align.
Next place cover on and torque to 17 ft lbs.
Yeah, I guess the most I'll be able to do is inspect the alignment once it's installed and has been run under load for a bit to see if it moves.just torque it to the correct amount and forget it. it cant loosen itself off off and if it gets a little tighter there isnt anything you can do.
That's something I'll have to consider. Which heater hoses are you referring to? As for the up pipe wrapping, what is the cost and how noticeable was the reduction in turbo lag (not entirely sure what that is by the way)?Hey you said your are doing up pipes I highly recommend the BD Performance stainless up pipe kit along with wrapping them, the collector and turbine side with the Thermo Tech turbo insulate kit, I got mine from XDP. The kit has tons in it. I triple header wrapped and aluminized heat barrier overlay my up pipes, collector and turbine housing and I was amazed how much it did in the way of quieting things and eliminating turbo lag.
In that project with that stuff off it is a good idea to put new heater hoses and couplers on.
Same for hpop hoses if they are ancient.