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-   -   Caliper bolts (http://www.the370z.com/brakes-suspension/128306-caliper-bolts.html)

Elmo370z 09-08-2018 08:36 AM

Caliper bolts
 
Anyone know what the torque specs of the four 14mm bolts that hold the two halves of the caliper are?

JARblue 09-08-2018 09:07 AM

The FSM does not appear to specify the torque for these bolts on the sport brakes.

There are similar bolts (2 instead of 4) on the base brake calipers. Pages BR-39 (for front) and BR-52 (for rear) in my 2011 FSM specify 20 ft-lbs and 32 ft-lbs, respectively, for these bolts. Something in that range seems like it should be safe for the sport brake calipers. Not sure why the rear is supposed to be torqued more than the front, but I'd probably just split the difference on both F/R (~25 ft-lbs).

SouthArk370Z 09-08-2018 03:05 PM

There are charts on the Intertubes, eg, https://www.portlandbolt.com/technic...-torque-chart/ , that will get you close enough. FWIW, bolt torque is an indirect measurement of bolt stretch and can vary quite a bit depending on thread condition, lubrication, etc.

Rusty 09-08-2018 10:58 PM

Quote:

Originally Posted by SouthArk370Z (Post 3784114)
There are charts on the Intertubes, eg, https://www.portlandbolt.com/technic...-torque-chart/ , that will get you close enough. FWIW, bolt torque is an indirect measurement of bolt stretch and can vary quite a bit depending on thread condition, lubrication, etc.

There is a dry torque and a wet torque specs for some fasteners. Also percent of thread engagement.

I couldn't find the torque spec for those bolts either when I rebuilt a few others. I used a chart for bolt diameter.

https://www.fastenal.com/content/fed...0Fasteners.pdf


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