What do the experts use to measure torque angles?

[kstylianos]

I'm in the process of installing the refurbished connecting rods with the std. Porsche rod bolts. The torque specifications for these bolts are:

initial torque - 14.5 ft/lbs
final torque - 90 Degrees +_2

What is the correct method for measuring the final 90-degree torque? After the 14.5 initial torque, start the wrench parallel to the crank and stop when perpendicular? Mark the nut and measure a 90-degree sweep? I know these are both crude methods, but will exceeding the +2 degrees (maybe by 10) be catastrophic? Just want to know what I'm getting into before proceeding.

Thanks for any help fellas.

[Tyson Schmidt]

If it's a simple angle, like 90 or 180, then I mark the bolt, and the object, so that I can verify that it has been done.

But there is a tool that has a gauge built into it, that has an appendage that reaches out and magnetically sticks to something, Then when you torque it you can see on the gauge exactly how far you've gone.

Still need to mark things when you use this tool as well. Sucks to not remember which bolt you torqued last and which ones you haven't torqued yet. You can't just re-check it with the torque wrench when you angle torque.

[kstylianos]

Thanks Tyson.....

I marked the bolt after setting the initial torque. Then I set the wrench parallel to the crank, then torrqued it till it was pretty much perpendicular then checked the bolt markings....looked spot on.

[nikos]

Eisai Ellinas?

[kstylianos]

ne'

Kepros.....Nicosia/Karavas

[MotoSook]

Hey! This is an English board! ..sorry couldn't resist guys. Charlie, glad your rebuild is progressing..is it?

[kstylianos]

Souk,

She's progressing....Don't want to jinx myself with gratitous pics and project updates....unless that what you guys wanna see

[ChrisBennet]

I have a torque angle guage but for things that go by increments of 90 degrees (like rod bolts) I don't bother. Mine is pain to use because the end of it's "arm" has a magnet and there aren't a lot of places to stick it on Porsche motors. It sure looks cool though.
-Chris
Here I'm using it to torque the head on my "SUV".

[rick conrath]

Why do they do it this way? Why not just go off ultimate torque since the rod bolts will stretch and hold some value? This seems illogical
Rick
'78 930

[rick conrath]

Sorry I read the explanation under rod bolts. Helped to answer the issue concerning the rod bolt stretching.
Rick
'78 930

[Wayne 962]

Right - torque values change depending upon a lot of factors (like lubrication) - the stretch method is much more accurate.

-Wayne