Floor pan to body bolts torque spec

[74 Thing]

I was flipping through my manual/exploded diagram and did not see the torque spec for the floor pan to body bolts.

There are 26 bolts and washers that have a 13mm socket head so I assume they are M8x1.25.

There are also (4) M10 x 1.5 x 55 bolts that are towards the front of the car. They have a 17mm hex head. I am unsure on the torque spec for these.

I have looked at a chart and the torque specs are dependent on the bolt grade. What grade should the M10 bolts be?

https://mechanicology.com/metric-bolt-torque-chart-class-8-8-class-10-9-class-12-9

[andybla]

https://www.thesamba.com/vw/archives/manuals/witho...060-70.pdf

page 130-131

first the 17mm, last the 13mm cross wise

[Dusty1]

Unless you're using bolts made of cheese the captured nuts in the body may twist off before you hit max torque on any kind of bolt.

Many Thing bodies have the bottom 12" effectively made of cheese (rust) by now.

So...

Go with 17 ft/lbs and your judgement for the 8x1.25s. If it feels like you're going to twist out a captured nut you're probably going to twist out a captured nut.

Hint: If you're worried about torque specs chase the threads of every hole. That's how you do a proper restoration, anyway.

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