Brembo Brake Caliper Repair 

How can you get the ends of the coil to bite, especially the top. I understand the pressure from the bolt being tightened would do this to some extent but wouldn't it help a lot to peen the aluminum at the ends of the coil?

@@KJ6EAD when you break off the tab at the bottom it’s designed to have a small burr pointed out into the aluminum and at the top it’s sprung out just a bit to not allow it to back out. At least that’s how they were designed when I was using them. I’ve been retired a couple of years so not sure if they changed anything.

@@tool2man Thanks. Maybe what I've seen have been installed wrong. It wouldn't surprise me considering some of the people I've worked with.

...YOU SUMMED IT UP PRETTY WELL-!!!

Exactly what I was thinking. The caliper breaks down for rebuilding. Taking it further apart would have made for a more stable setup.

What do you know, you are just an actual expert. All the armchair mechanics and materials engineers in the comments know better.

@@boothbytcd6011 "experts say"

Exactly why i repair my own stuff...you worried about the paint? yet nothing about open brake fluid hole?? i worked in shops too....lol

Why everyone in this section hating on the Subaru tech guy person thing

Did you need a $7000 vise to place a heli-coil? Thread repair is one of those DIY father shows son kind of repairs. Just buy the kit and follow the directions. If you're lucky the drill bit doesn't break, but always a learning experience for everyone involved.

I was just curious , I was accustomed to Proto Slimcerts , don't think they even made now

In actual tests Helicoils outperformed all other thread inserts, including Timeserts. The tests were on maximum torque application and direct pull out. Essentially, a Timesert is a tube that is both threaded internally and externally although it does nave a tapered section at the base to expand out to supposed lock into the threaded hole in the parent metal. The Timesert can only have full contact at the base of the insert, where it is tapered all the rest of the threads relying on a loose fit. The Helicoil is a tight spring with sharp coil sections that form the thread. When a bolt is tightened in, the ramping action of the bolt threads against the coils of the insert pushes them out into the parent metal giving full depth pressure to the sides of the hole and digging the spring section in. The Helicoil material is high strength alloy steel so that the parent material will always be the one to fail, when it eventually does. Given the relative price of Timeserts against Helicoils, using Helicoils is a no brainer when they outperform them all Timeserts have their place. In a VW air-cooled crankcase the cylinder holding down bolts are close to the holes for the cylinder barrels and the bolts have a bad reputation for stripping the crankcase thread especially in high performance application. The use of Timeserts is normally prescribed and I would recommend them over Helicoils because there will be radial pressure that could break the bolts and helicoils into the cylinder barrel holes. Using a Timesert reduces this radial pressure and distributes what there is around the outside of the timesert and into the body of the crankcase. As I said previously, Porsche use Helicoils to mount the brake calipers to the alloy swing arm. Porsche are renowned for placing engineering above all else in their cars so would have deliberately selected Helicoils over all other options

We used Wurth Timeserts in the Industrial environment and had excellent results. 🙂

@@clivewilliams3661 I've seen more failed Helicoils over the years, including some that I have installed, I have yet to have a failed Timesert, although I have experienced the material around the Timesert failing, on a Yamaha XJR1300 1500cc bigbore, cylinder studs, so I made my own larger inserts and all was well. As for a caliper mounting bolt which is likely to be on and off as the pads are changed in use, I find Timersert better for these applications, and less likely to wind out on the bolt in time.

@@mickymondo7463 What type of failures have you seen with Helicoils, the actual Helicoil or the failure of the surrounding metal? I suppose that with a Timesert you can loctite it in, that is not advised with a Helicoil. Really, the only time you would need to remove the caliper on a car is when changing the disc or the bearings that could be less frequent than changing pads, which can be done with the caliper in situ. I must admit that most times i change both the caliper and disc at the same time as with the non-asbestos pads they have to use a softer disc material that typically wears at the same rate as the pad. However, on our family car I only had to dismantle the front brakes once at 130,000mls to replace the pads and discs although even then they weren't at the wear limit. My performance/competition cars generally require pad/disc replacement at about 50,000mls so even then its pretty infrequent. I've never changed the pads or rotors on my Aprilia RST although that only does around 3,000-4,000mls/ year

@@clivewilliams3661 I've seen Helicoils wind out on the bolt after repeated loosening like a caliper gets whe pads are changed, I've seen them pull out on torquing the fastener to spec and with the side loading that caliper mounting bolts get they don't seem to remain as secure as Timeserts.

how do you locate the hole position once that's done?

@@makepartsUSA put em in a fixture before welding, no?

It's common practice these days and has been for a while to put steel or titanium inserts in aluminum (and magnesium) parts to save the alloy.

To be honest, Adam needs to have the fire department / paramedics on sometime. They’ve been part of the channel from the beginning.

Haha, love the plug for CEE. A real machinist that does real work, not a psuedo machinist with a sugar momma with 2 shops and no real jobs.

CEE is my favorite channel. Complete no bs get it done guy in short supply in this world. Everything he does has a purpose to make his business better. But he’s new to RU-vid compared to Abom. Nothing wrong with Abom. I think he’s geared toward content creation - and I would think he derives some benefit for all these products he is advertising

@@Rubbernecker Adam has a sugar momma?

@@mindasb and does she have a sister???😂

@Abom790 no scammers allowed!