ah..I see where this is from post 160...bad stuff happens fast at those rpms....looks like SPS is an aftermarket fastener supplier..
https://www.pccfasteners.com/compani...enkintown.html

Yes
here are a shots from manual
showing 13b and yelow pic 703

Here is some different models and variants
i think there is even some more not listed

More then one was fractured

See the crack

All new ones Jim overnighted all the parts!!! 200 inch pounds in shaf 180 on centrifugal

Can I ask what that replacement set of bolts for the T53 runs?
it's easy to look up for BBC but delving into a turbine is not an everyday occurrence for most everyone.... very curious as to the repair/ replacement cost of the Lycoming vs longevity/ hp output from your POV

how much hp and tq do these make?

Jim has not sent me the bill yet..
that said i have been pretty savvy over the years on accumulating parts
i have been running these for about 11 years
now. I would have to say overall its been
about the same maybe even a little cheaper.
then gas counter parts.
there are several sources out there.
even a monthly service locator where you request for quote on parts.
the faa certified parts can be expensive.
transupport in merrimack nh is another
source.

i have test cell sheets from pps
before we converted to the hybrid
703.s in 2013


This is the 13b

This is 703

Post 503 shows the torque chart,

so your military rated. and now I see why those turbines are thirsty,sfc's are high.