Caliper install problem on 70 RR
#1676721
09/25/14 09:13 AM
09/25/14 09:13 AM
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Joined: Sep 2009
Posts: 1,805
ky hills
thehemikid
OP
top fuel
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OP
top fuel
Joined: Sep 2009
Posts: 1,805
ky hills
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I thought this forum might be a better place to ask this. My drivers side calipers long bolts threaded in without a problem, but on the passenger side the threads just would not start. So I popped the rubber bushings out & the bolts threaded with ease, ...but were way off center. The tube part of the rubber bushing is .075" & would not squish to allow the bolts to line up. It appears material needs to be removed from the bracket or the caliper. Have any of you guys had this problem, & ground/milled the bracket or caliper so it would line up. There seems to be enough metal on the inside of the bolt hole on the caliper to cut enough (& leave a radius blend) & still has more material left than the outside of the bolt hole. If I hadn't of made the mistake yrs ago of letting my originals go in for the core charge....    ink & think what'a ya dink?
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Re: Caliper install problem on 70 RR
[Re: thehemikid]
#1676722
09/25/14 09:54 AM
09/25/14 09:54 AM
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Joined: Jan 2003
Posts: 4,105
Horsham, Pa.
Finoke
master
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master
Joined: Jan 2003
Posts: 4,105
Horsham, Pa.
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Yes, I had the same problem. It drove me nuts for a week. If you notice its a shoulder bolt. What you need to do is put the closed end of a box wrench on the bolt. Then tap with a hammer as you try to screw it in. As you tap, put pressure on the bolt with the wrench and tilt it towards the side you need to center it in the hole. Mine too was a 70 RR. One side went in well. The other side needed the wrench and hammer. 
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Re: Caliper install problem on 70 RR
[Re: thehemikid]
#1676723
09/25/14 12:29 PM
09/25/14 12:29 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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Don't mess with the bolt hole.
If you break out the grinder take a little off the ear where it is in contact with the bracket. That should allow the caliper to drop down that little bit you need.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Caliper install problem on 70 RR
[Re: feets]
#1676724
09/25/14 06:47 PM
09/25/14 06:47 PM
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Joined: Sep 2009
Posts: 1,805
ky hills
thehemikid
OP
top fuel
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OP
top fuel
Joined: Sep 2009
Posts: 1,805
ky hills
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Quote:
Don't mess with the bolt hole.
If you break out the grinder take a little off the ear where it is in contact with the bracket. That should allow the caliper to drop down that little bit you need.
Thanks for all replies...
Finoke, I did the box end with a heavy thumb but I've never liked the metal to metal with thread start with a hammer especially on this small a thread . Usually if I can't get a thread or two with my fingers I want force it.
feets, yes the ear/bracket contact was the area I was implying, & I was leaning towards the ear.
Thought I would check on this cornering forum in case there was a weakness after cutting that I wasn't seeing.
I'll probably use a cut off disc to keep the heat down, & blend into their radius.
Looks like I'll have to cut equal to about half of the gap on the left side of the bolt or to where the bolt is ~.075" from that side. Or just sneak up on it with a grind & check, grind & check, etc.
Thank!
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Re: Caliper install problem on 70 RR
[Re: thehemikid]
#1676725
09/25/14 11:47 PM
09/25/14 11:47 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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Grab a Sharpie marker and use it to mark a cut line. I use them extensively when machining stuff.
You can grind right up to it that way.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Caliper install problem on 70 RR
[Re: feets]
#1676727
09/27/14 07:37 AM
09/27/14 07:37 AM
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Joined: Sep 2003
Posts: 19,355
north of coder
moparx
"Butt Crack Bob"
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"Butt Crack Bob"
Joined: Sep 2003
Posts: 19,355
north of coder
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Quote:
Grab a Sharpie marker and use it to mark a cut line. I use them extensively when machining stuff.
You can grind right up to it that way.
and the silver ones work great on dark colored surfaces.
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Re: Caliper install problem on 70 RR
[Re: Finoke]
#1676728
09/28/14 12:26 AM
09/28/14 12:26 AM
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Joined: Sep 2009
Posts: 1,805
ky hills
thehemikid
OP
top fuel
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OP
top fuel
Joined: Sep 2009
Posts: 1,805
ky hills
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Quote:
I agree that Feets method is best. When doing it my way, the rubber bushing gets compressed slightly to give you the clearance you need. Probably not the best for the life of the bushing.
Let us know how you make out.
Well, a little embarrassing but I ended up with a little more gap than I wanted, because I sKiPpEd the grind & check, grind & check, for a one cut & be done.
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Re: Caliper install problem on 70 RR
[Re: thehemikid]
#1676729
09/28/14 01:52 AM
09/28/14 01:52 AM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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It's done and on the car.
There's still plenty of mean left around that thing. I wouldn't worry about it.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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Re: Caliper install problem on 70 RR
[Re: thehemikid]
#1676731
09/29/14 12:17 PM
09/29/14 12:17 PM
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Joined: Jan 2003
Posts: 28,067
Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,067
Irving, TX
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Yep.
The calipers see a rotational force. If the factory designed any slop at all in them they would get beat to death when you go from forward to reverse and back.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind.
- Stu Harmon
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