World's worst frozen caliper bolt HELP!

[GHEN]

Pardon the title hyperbole,

I am trying to get the left front brake caliper off of this car. In the 6+ years I have owned it I have never had the caliper off.

I finally got the bottom caliper bolt off but each turn was as difficult as the one before, now on to the top one.

I just cannot get it to budge. The picture below shows my latest idea. I have a jack with a pipe jacking up onto the ratchet handle...unfortunately this is causing the shock to compress instead of breaking loose the bolt. It is currently sitting like this hoping the static pressure might help move things along.

I rapped the bolt to wake it up and have had some PB Blaster on there for a week.

Any ideas? Could some MAP torch heat to the bolt head help?

Thanks in advance,

GHEN

[drkshdw]

Judging by the rust on the outer edge of the rotor, heat is going to be the only thing that will work on that bolt. Careful with it though so you don't cut it off but get it nice and hot and have a go at it then.

[Spring44]

That is a "hospital" rigging that you have shown in your picture.

Take that piece of pipe off of the jack and slip it on the handle of your wrench and use it as a cheater pipe for increased leverage. If you have soaked the bolt in penetrating oil for a week, it ought to come loose with a little more force than you can get with that short-handled ratchet. Maybe even try a long breaker bar on it first.

[GHEN]

Originally Posted by Spring44

That is a "hospital" rigging that you have shown in your picture.

With 100% seriousness I appreciate your concern. This was a slow and measured process with all safety measures taken.

Originally Posted by Spring44

Take that piece of pipe off of the jack and slip it on the handle of your wrench and use it as a cheater pipe for increased leverage.

I tried that 1st, to no avail. This was the worst bolt I have ever worked on,

Originally Posted by Spring44

If you have soaked the bolt in penetrating oil for a week, it ought to come loose with a little more force than you can get with that short-handled ratchet.

You would think but that wasn't the case.

At the end of the day, it took slow, measured steps using the jack to turn the wrench that did the trick (I subbed a box end wrench for the ratchet).

The caliper and hub assembly are now off, thanks to everyone for your help & guidance.

GHEN

[pfarah]

Good job, heat usually does the trick as drkshdw stated. A small propane tank has helped me in such tight spots in the past.

[Spring44]

Glad that you got it off successfully!

[thomasryan]

A 50/50 mix of acetone and mineral base atf works very good. as the acetone evaporates, it pulls the aft into the threads.

I am a pb fan but kroil and rost-off by wurth are also great penetrants.

[djnolan]

There are a few other tricks with a box end wrench, one hit it with a hammer, or two double wrench it. https://www.youtube.com/watch?v=MhkydEzXL0U

[jeff968]

Get out the torch. It always works.

[Swennydawg]

I use my Kobalt "stubby" air gun. 450lbs is the rating for installing a bolt/nut, a bit less for removal but it always works. I just used it on an 18 y/o 12mm bolt after soaking in WD40 and it came off.