Front brake caliper pin bolt torque?

[mds]

What is the torque spec for the GT3 front brake caliper pin bolt? This is the bolt on the end of the heavy duty pin holding the brake pads and spring in place.

[Loren]

The two caliper attachement bolts are 63 ft-lbs.

[mds]

Loren, not the caliper bolts. The pin holding the pads in place has a bolt at its end rather than the spring clip. My guess its around 15ft-lbs.

[Loren]

Hmm... my one month old parts list still shows a spring clip. Only the Carrera GT has a bolt. I certainly wouldn't go over 15 ft-lbs. -- maybe a little Loctite though?

[mds]

Yes, it looked like there was a little bit of factory Loctite on it. I'll leave it at 15 for now. Thanks.

[KarlS]

Mike,

What am I missing. My caliper uses a pin, as shown in the attached picture.

Karl

[mds]

Well, demand compensation Karl!!! :o :help: So did my car get new style brakes as well as new style crankcase?

Here is a picture of outer end of the pin. You can see its not like the regular pin. This end of the pin has a bolt like head on it with shoulders that mate against the adjacent edges of the calipers.

And here is a picture of the other, inner end. Sorry for the focus, I was too lazy to remove the wheel and just held the camera as best I could. On this end of the pin you can see the bolt, just lower left of picture center.

[Loren]

Uh... could it be that the fronts with the 6 piston calipers have bolts and rears have the older 4 piston calipers with pin and circlip?

[mds]

Yes. The rears do have the standard pin and spring clip.

[clord]

My GT3, serial xx...xx2222 has the front caliper pad retaining bolt, like mds's, and the pin in the rear calipers......and the "964...." numbered crankcase. B) Am I glad?.... I dunno.......

[KarlS]

Well, I'll be darned, this must a be a change for the 6 piston calipers. I just checked my car and it does indeed have a bolt for the front caliper pad retaining spring. Apparently all of the Cup cars with the 6 piston calipers have it as well. Not sure why they changed it but I assume there is some kind of issue with holding the larger pads for the 6 piston calipers and the little R-clip just wasn't up to the task. It will certainly make changing pads take a little more time.

Karl

Edited December 8, 2003 by KarlS

[kev]

Hi,

Did anyone ever find the spec torque for this bolt?

Thanks.

[mds]

Hi,

Did anyone ever find the spec torque for this bolt?

Thanks.

I have not. I looked in the street and cup car service manuals, no luck.

I've been using about 10ftlbs along with blue locktite for a while now. Seems to work fine.

[FishManGary]

What is the torque spec for the GT3 front brake caliper pin bolt? This is the bolt on the end of the heavy duty pin holding the brake pads and spring in place.

Sir;

How did you get the subject pin bolt off? Mine are VERY tight. Is the thread cw or ccw? The pin bolt head will rotate only a few degrees. Thanks.

[Hildog]

25 nm according to this reference taken from an old workshop manual circa 2012.  mine is 996 GT3.  other comments welcome!