Brake Caliper mounting query

[wagonist]

Would anyone here trust heli-coils to hold the brake calipers onto the hub of their car?

[Joshstix]

Hell No!!!


Nice edit. The above post is in reply to the original question of using nuserts to hold the brake calipers on.

[wagonist]

yeah, was kind of thinking that, but I'm trying to find a way to mount the original brake calipers back on my car.
Problem is, the bolt size has now gone up from 12 to 14mm & I don't trust a 12mm shank sitting properly in a tapped thread for a 14mm bolt.

[Joshstix]

Yeah that's fair enough. Maybe you could get the holes in the hub sleeved?

[Joshstix]

Or you could drill out the holes in the calliper brackets and run the bolts thread and thread them into the hub carrier. I suspect this would mean having the bolts coming from the rotor side though which I guess isn't so feasable.

[wagonist]

I think it'd be pretty hard to machine up a 1mm thick tube though wouldn't it?

Of course, then I'm going to lose the ability to refit the 4 spots...

Mind you, lately they've been nothing but trouble. I've got another wheel bearing gone, though its the driver's side this time.
I need new brake pads, tyres, rims.

Time to downgrade & refit the original gear that just sitting around here.
Been getting the feeling lately that Toyota didn't plan for my car to be driven the way I do.

[wagonist]

Or you could drill out the holes in the calliper brackets and run the bolts thread and thread them into the hub carrier. I suspect this would mean having the bolts coming from the rotor side though which I guess isn't so feasable.

Not sure, it would depend whether my floating calipers (which split into 2 pieces) have the back part wrapping around to the front of the rotor. But worth checking.

[Joshstix]

If they're the same as the ST185 ones I think you'll be out of luck. I seem to remember that ther slot in the carrier would not allow the rotor to be removed with the carrier bolted on.

[horse]

Steve, i've still got those ST215 hubs sitting here if you want them

[wagonist]

Josh, yeah I remember my JDM twin spots wrapped around a long way. They were slightly different to my original single spots. But I think you're right, the back wraps around the front so that the pad has something to run in.

The ST215 versions have the ABS sensor hole? They are listed as a different part number to my FWD hubs on my EPC, but I can't figure out why (I suspect that the steering rack sits at a different height)
What's you email address & I'll get you do take some measurements to compare with my car?

[IN 05 NT]

Would anyone here trust heli-coils to hold the brake calipers onto the hub of their car?

yes. we have had lots of customers doing HOME repair jobs, and crossed a caliper bracket bolt.....

get yourself the right helicoil, use locktight on the helicoil, and a lil bit on the bolt

if you do not trust this method, take it to a pro, or call a nut and bolt specialist repair man, who will come out to you and do it for $120....

that or buy a new hub

[2jzhilux]

we use helicoils for brake calipers all the time (stupid apprentices) if you do it right a helicoil can actually hold more bolt torque than a normal threaded hole as it contacts on more area than the bolt in a normal threaded hole

[The Real Roadrunner]

contact wurth and buy a timesert set to suit it would be the only thing id trust or bring it down to me and i'll have a look at alternative methods.

[wagonist]

contact wurth and buy a timesert set to suit it would be the only thing id trust or bring it down to me and i'll have a look at alternative methods.

To give people an idea of what I did originally (& am now trying to reverse) read this:
Brake upgrade for 5x100 FWD/4wd

[stumpygt4]

Steve, I have found an alternitive to the helicoils. They are called keyserts. Apparently they need about 4 tonne to pull them out. Depends on how much meat you have left 'cause you have to drill and tap your holes to suit.