Re-use flywheel torque to yield "stretch bolts"

[CrankyOldMan]

I took a look at the OEM Yaris repair manual and it seems that truth is stranger than fiction! The A/T flex plate CAN reuse the bolts, but the M/T flywheel CAN'T. Even stranger than that, is that the xD repair manual (not pictured) only shows the M/T bolts as "precoated", and not "non-reusable", but also has a post-torque turn requirement.

It seems that the difference, then, is in how the joint is engineered. The flywheel experiences significantly higher shear loads and is safety critical, so it needs a tighter joint, and it was engineered with Torque Turn to Tighten (TTT) joints. The flexplate has a lot of "slush" factor from the torque converter, so it can rely on standard torque to friction joints. (I read an article on it, for reference: http://www.enginebuildermag.com/2001...rque-to-angle/)

In this case, I would specifically follow the OEM procedure and replace them for a M/T vehicle, instead of following "shop lore" about if you can or can't, based on other vehicles' requirements.