![]() |
Register or Log In To remove these advertisements. |
|
|
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Registered User
Join Date: Nov 2012
Location: DFW, TX
Posts: 298
|
bonehead move: stripped caliper threads
Guys
I got sick and tired of my "not-so-quiet" pads and got new pads today. As i was putting the caliper bolt back in (lubed with brake quiet, but the threads on the bolt and holes were clean and dry), got to about 25 lb ft and the thread stripped. So, maybe it was just that holes time to strip. i still feel like a bonehead... Ive see some folks put a helicoil there. others tried and screwed up. , but ive never done a helicoil. So the way i see it is ive got 3 options: 1)try a helicoil and hopefully get it aligned correctly. 2)new spindle... 71 5 lug, stock height... where do i get that? not sure if a 6 lug spindle is the same... 3)try these: dorman 13890. oversized caliper bolt. but i have read this is a one time deal and im still faced with #1 or #2 next time the caliper comes off. So maybe i just have 2 options... What do you guys think? Have any of you done a helicoil here? thanks! |
![]() |
![]() |
![]() |
#2 |
Registered User
Join Date: Nov 2012
Location: DFW, TX
Posts: 298
|
Re: bonehead move: stripped caliper threads
Also, if you guys can confirm the caliper mounting bolts are 7/16 in.-20?
I think id need heli-coil 5528-7 thanks! |
![]() |
![]() |
![]() |
#3 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
|
Re: bonehead move: stripped caliper threads
The threads are in the backing plate. I believe you can buy new ones
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
![]() |
![]() |
![]() |
#4 |
Registered User
Join Date: Nov 2012
Location: DFW, TX
Posts: 298
|
Re: bonehead move: stripped caliper threads
backing plates, as in dust shields??? i dont think mine are like that. mine looked like the threads are part of the spindle/knuckle... 71 C10, 5 lug... did something change mid 71??
thanks |
![]() |
![]() |
![]() |
#5 |
18 Till I Die
Join Date: Mar 2005
Location: Alberta, Canada
Posts: 1,522
|
Re: bonehead move: stripped caliper threads
No Pretty sure they are part of the spindle. I would go to a wrecker.
__________________
2011 GMC Acadia 1969 GMC BBC LS7 2007 GMC Crew Duramax 1987 Camaro Iroc 350 Tuned Port Injection 42000Km 1987 Chevrolet Silverado 350 TBI 1987 Chevrolet Silverado 350 TBI(yes 2) Take me drunk, I'm too home... ![]() |
![]() |
![]() |
![]() |
#6 | |
Registered User
Join Date: Jun 2014
Location: Glendale, Arizna
Posts: 1,642
|
Re: bonehead move: stripped caliper threads
Quote:
A complete set of reamers would sure come in handy for stuff like that, but I never pulled the trigger. That would be a lot easier than trying to drill it out straight. Maybe you could get one reamer for that job if you are worried about getting it drilled straight. Good luck, most of us have had that happen so don't feel bad. |
|
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: Nov 2012
Location: DFW, TX
Posts: 298
|
Re: bonehead move: stripped caliper threads
|
![]() |
![]() |
![]() |
#8 | |
Registered User
Join Date: Nov 2012
Location: DFW, TX
Posts: 298
|
Re: bonehead move: stripped caliper threads
Quote:
i figure i might as well try. ill just step up the bits real slow. the video i saw used red loctite. As long as i can get 35 lbft on the bolt at install, its probably ok, right? thanks! |
|
![]() |
![]() |
![]() |
#9 |
Registered User
Join Date: Nov 2014
Location: Austin
Posts: 749
|
Re: bonehead move: stripped caliper threads
My suggestion is to avoid "heli-coils" and use a "Time-sert". A much better mouse trap and very easy to install. Will be just as strong as the original hole and thus safer for use on the braking system.
|
![]() |
![]() |
![]() |
#10 |
Special Order
![]() ![]() Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,859
|
Re: bonehead move: stripped caliper threads
Sorry, haven't been into my 2wd for a while and remembered wrong. I have the 4wds in mind I guess. Dust shield/backing plate, same thing to me. No harm in trying heli-coil or other thread correction first. If need be, oversize would be good as new.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
![]() |
![]() |
![]() |
#11 |
Senior Member
![]() Join Date: Sep 2007
Location: Albuquerque NM
Posts: 7,848
|
Re: bonehead move: stripped caliper threads
the 71 72 spindles are in a class by themselves. i bet someone on here has a nice one to sell you, just look on the for sale section.
__________________
1967custom |
![]() |
![]() |
![]() |
#12 | |
Registered User
Join Date: Nov 2012
Location: DFW, TX
Posts: 298
|
Re: bonehead move: stripped caliper threads
Quote:
but for either helicoil or time-serts, i need a specific length. so im thinking that id need the 7/16 -20 with a .25 or .375 length. it seems like having too long of an insert would be a bad thing... Can you guys confirm the 7/16-20? thanks guys |
|
![]() |
![]() |
![]() |
Bookmarks |
|
|