Author Topic: torque specs  (Read 3086 times)

Offline burdar

  • Sr. Resident
  • ******
  • Posts: 5925
torque specs
« on: December 12, 2011 - 08:43:13 PM »
Are there torque specs for the caliper bracket bolts?  What about the lower ball joint bolts/nuts?  Those are a lock nut in 73...doesn't use a cotter pin.  Is there a torque for lock nuts?

The caliper bracket bolts originally had threadlocker on them.  I've got some blue threadlocker to use but need the torque spec if there is one.  Thanks   




Offline dodj

  • Sr. Resident
  • ******
  • Posts: 6197
Re: torque specs
« Reply #1 on: December 12, 2011 - 10:22:32 PM »
My '73 service manual list 75-100 ft/lbs for adapter mounting bolts, if that's what you mean by caliper bracket bolts. If you mean the guide pins, 25-35 ft/lbs.
Lower ball joint to knuckle bolts, 160 ft/lbs
« Last Edit: December 12, 2011 - 10:26:54 PM by dodj »
Scott
1973 Challenger  440 4 spd 
2007.5 3500 6.7 Cummins Diesel, Anarchy tuned.
Good friends don't let friends do stupid things. ........alone.

Offline footin70rt

  • Jr. Member
  • **
  • Posts: 286
Re: torque specs
« Reply #2 on: December 12, 2011 - 11:01:59 PM »
Correct torque on any fastener is tighten til it breaks, then back it off a 1/2 turn.   :stirpot: :poopoke:

 :bigsmile:
Thomas
Driving the same 70 R/T since October 1985
Native of Bozeman, MT

Offline burdar

  • Sr. Resident
  • ******
  • Posts: 5925
Re: torque specs
« Reply #3 on: December 12, 2011 - 11:17:16 PM »
Thanks, that's what I needed.  I was refering to the adapter brackets.  I still need to find some new caliper pins.  The ones on E-bay don't fit 73-74.  I think Wade posted a link to some awhile ago but I have no idea where that post is.

Quote
Correct torque on any fastener is tighten til it breaks, then back it off a 1/2 turn.

Does anyone remember a commercial(probably more than 10 years ago by now) where a young boy was guiding someone into a parking space?  The boy was like "A little closer...a little closer."  Then the driver hits the car infront of him.  The boy then says..."Right there!"   :lol:

Offline cudazappa

  • Full Member
  • ***
  • Posts: 709
Re: torque specs
« Reply #4 on: December 13, 2011 - 04:13:55 PM »
Thanks, that's what I needed.  I was refering to the adapter brackets.  I still need to find some new caliper pins.  The ones on E-bay don't fit 73-74.  I think Wade posted a link to some awhile ago but I have no idea where that post is.

Does anyone remember a commercial(probably more than 10 years ago by now) where a young boy was guiding someone into a parking space?  The boy was like "A little closer...a little closer."  Then the driver hits the car infront of him.  The boy then says..."Right there!"   :lol:

I may be wrong, but didn't 73 and 74 e-bodies use slider calipers like the A-bodies?
1971 Challenger - AutoX project
2015 Dart GT - Daily Driver

Offline jimynick

  • Resident
  • *****
  • Posts: 4512
Re: torque specs
« Reply #5 on: December 13, 2011 - 04:20:09 PM »
I can still buy all the brake pieces at my local parts store, (and did) and would suggest you give that a try before the restoration vultures pick any more flesh off your bones.  :2cents:

Offline burdar

  • Sr. Resident
  • ******
  • Posts: 5925
Re: torque specs
« Reply #6 on: December 13, 2011 - 05:02:16 PM »
Quote
I may be wrong, but didn't 73 and 74 e-bodies use slider calipers like the A-bodies?

73 uses the long pins.  There are extra brackets that bolt to the spindles.  I'm not sure how the A-body is setup.  Are they like the late B-bodies...the M and J bodies?

Quote
I can still buy all the brake pieces at my local parts store, (and did) and would suggest you give that a try before the restoration vultures pick any more flesh off your bones.
 

Yes, a lot of restoration companies are just reselling local parts store pieces at an inflated price.  Unless you need exact OE correct parts, the local parts store is definately the way to go.  Last time I checked, Car Quest and NAPA didn't list the new caliper pins/bolts.  Advanced Auto lists them but they are rediculously priced.  I found some at RockAuto for $10.  I'm not sure how many you get for $10.  I assume 2.

Quote
Lower ball joint to knuckle bolts, 160 ft/lbs

How in the world am I going to get those at 160 ft/lbs without them being attached to the car?  It's not going to happen.  I'll probably just have to snug them up and remember to tighten them the rest of the way once the K-member is bolted in.  75lbs sucked last night on the adapter brackets. 
« Last Edit: December 13, 2011 - 05:07:29 PM by burdar »

Offline dodj

  • Sr. Resident
  • ******
  • Posts: 6197
Re: torque specs
« Reply #7 on: December 13, 2011 - 06:56:22 PM »
I may be wrong, but didn't 73 and 74 e-bodies use slider calipers like the A-bodies?
My '73 is like burdar's, using the long pins, but I do remember dismantling a '73 that had slider calipers like you are suggesting. It was in the late 80's though. Could have been converted? Or maybe some came that way?
Scott
1973 Challenger  440 4 spd 
2007.5 3500 6.7 Cummins Diesel, Anarchy tuned.
Good friends don't let friends do stupid things. ........alone.