Anyone know the torque spec for the 19 mm caliper retaining bolts on the rear brakes? Car is a '74 2.0 . Thanks.

Ansbacher

Really tight. Just kidding sort of. It's a tough spot to put a torque wrench on.

According to the Tech Specs book:

M12 x 1.5 x 30? 7.0 ft lbs

I cant believe it is 7 ft lb. Did you add a decimal in error?

@JeffBowlsby

The spec is "good 'n tight"!

You're right Bruce I should have questioned that.

Turns out its more likely "7.0 mkg" = 50 ft lbs.

Of the several torque value tables in the Tech Specs book, only one has the units mkg indicated all other tables do not show units.

Thanks everyone for clearing this up. Now, if I could just find my torque wrench....

Ansbacher

also... don't the rear calipers have the locking tab... that prevents those bolts from loosening....

I never use a torque wrench on them
good and tight has always worked.
and then the lock tabs
b

Yes, Mark said it well. Good and tight.

@brant

Fronts have the lock tabs. I toss them and use wave washers like all other Porsche calipers use
Rears have the backing plate strap that goes between the caliper rear and trailing arm. If left out the caliper rubs.

Backing plate strap?

good point.. and I wasn't very clear.
I was thinking the rear backing straps too

I just use split washers on my front calipers also.