Torque specs

The restoration is moving forward and tomorrow is the day to drop the body back onto the frame and get it bolted down. I looked in my shop manual for the torque specs for the body to frame bolts and can't find any. Does anyone know what the specs are for these bolts?

Thanks, Tim

Reply to
Tim Ulrich
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Bolt Assembly Torque (N*m) The torque values in the table are based on the use of lubricated threads. First number is grade 5 iron Second Number is grade 8 iron Third number is aluminum

Course thread

1/4-20 (NC) 9 15 8 5/16-18 (NC) 20 30 16 3/8-16 (NC) 40 55 25 7/16-14 (NC) 60 90 45 1/2-13 (NC) 95 130 75 9/16-12 (NC) 135 190 110 5/8-11 (NC) 180 255 150 3/4-10 (NC) 325 460 255 7/8-9 (NC) 490 745 380 1-8 (NC) 720 1100 570

Fine Thread

1/4-28 (NF) 12 18 9 5/16-24 (NF) 23 33 19 3/8-24 (NF) 40 60 35 7/16-20 (NF) 65 95 55 1/2-20 (NF) 100 150 80 9/16-18 (NF) 150 210 115 5/8-18 (NF) 210 290 160 3/4-16 (NF) 365 515 285 7/8-14 (NF) 530 845 420 1-14 (NF) 800 120 650

Reply to
DEEPNHOCK

But, I wonder if they used less on the body bolts because of the rubber spacers?

Reply to
ALEX M.

I have wondered the same also since the rubber would be crushed so flat that it would be like haviing a steel washer, with no resilience. If that were the case, though, the factory would have used self-locking nuts on them.

Reply to
Barry

Re-installing a body is not simply a matter of "bolting it down". There are no preset amount of shims to use on each mount- except that there must be at least ONE rubber shim. The body shims and their matching bolts are used to align several key elements to the body-structure. By adding/removing shims, and adjusting how tight their related bolt is- you can change how the various body-panels FIT. For example- you can change the cowl and front hinge-pillar shims/bolts- to adjust for door fit. IE: You can actually change the shape of the door opening...

Depending on what car you are working on... there are several key body-mount areas that require special attention. Noone has ever written a good desription or procedure for the reinstallation of a Body... because it is dauntingly difficult to describe the procedure via the written word.

IF you want to discuss this in detail.... e-mail me directly (I will forward my Phone #)... and I will do my best to describe to you what "I" do when reinstalling Bodies back onto their frames...

Ray

Reply to
Studeman

I would suspect that rubber was used more as a silencer than a cushion. Besides, weren't body bolts more in the line of grade 3?

JT

Reply to
Grumpy AuContraire

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