Rear Brake Caliper Bolts GT3

[LindsayMac]

Did I hear correctly that after removing the rear Caliper to replace brake pads you must change out the bolts as they can only be used once (stretch design) also does anybody have the torque for these bolts? Moving over to Pagids RS29s for a wee run to the Ring and Spa

[thegoose]

The calipers don't need removing to change the pads (on any Porsche in the last 30 years as far as I know).

[LindsayMac]

thegoose said:

The calipers don't need removing to change the pads (on any Porsche in the last 30 years as far as I know).

Afraid you do have to remove the rear Caliper to access the retaining pins. I wish you were correct Marcus

Edited by LindsayMac on Tuesday 4th September 10:53

[Slippydiff]

Lots of info here Lindsay :

http://forums.rennlist.com/rennforums/997-gt2-gt3-...

[keep it lit]

I have removed my rear calipers a number of times & retained the original bolts with no problems..

Are you going to DN6 on October 7th & Spa 8/9th October C/D's.. ?

Ade

[thegoose]

LindsayMac said:

thegoose said:

The calipers don't need removing to change the pads (on any Porsche in the last 30 years as far as I know).

Afraid you do have to remove the rear Caliper to access the retaining pins. I wish you were correct Marcus

What an odd bit of "progress"

[fergus]

I would highly doubt the use of stretch bolts (like cyl head stud bolts) to bolt calipers to the uprights.

I think you've been given duff info. Also no need to loctite anything, etc if the correct torque is used and the threads are clean.

[fioran0]

the workshop manual specifically says new bolts after removing. how you view this is up to you

i take it you have got a 997 GT3? stupidest idea ever the rear calipers on them. that they need the whole caliper removed in order to change the pads due to the strengthening bridge on the caliper is incredibly short sighted, even more so when you consider its an alloy wheel carrier and bolt removal causes significant wear.
if you are out of warranty, think very seriously about studding the rear carrier so its just a nut you need to remove to change pads.

[LindsayMac]

Yes I will purchase new bolts today from Porsche. Vehicle is still under warranty, just slipping in a wee set of track pads that can be replaced to worn originals for service etc

[Sandy59]

Porsche policy I beleive is to renew the bolts, pad sensors, and anti squeal shims.
From memory the bolts are not even that highly torqued, I never replaced mine.

The pad sensors are the tricky part of the job. I'd spray them with something first, then you may be able to tease them out with a couple of fine tipped screwdrivers, or maybe not then they'll break and have to be replaced. Not that expensive so I'd probably just buy a pair and be done with it.
Good luck.

[pete.g]

They are stretch bolts, so replacement is recommended. They're about £2 each so it's not a big expense.

A right angle pick tool is useful for both the R Clips and the sensors.

[LindsayMac]

Interestingly enough Porsche had to order in the bolts, sounds like they don't change them regularly either that or they keep no stock of regularly used items.

Going to give the car an oil change as its 5k since it last one at OPC, where is the best place to buy the oil filter, OPC?

[GreatPretender]

pete.g said:

They are stretch bolts, so replacement is recommended. They're about £2 each so it's not a big expense.

A right angle pick tool is useful for both the R Clips and the sensors.

Bit of a necro-post this...

However, the bolts are not only £2.00 each. They are £40.00 per side

Or at least, they are from your friendly Porsche Centre

At least Dick Turpin had the decency to wear a mask, FFS.

So I'll be sticking with the original bolts, thank you. Unfortunately I need to pay £375 to replace the rear PCCB pads. I could get Pagid race pads for about £70 cheaper but then I'd be wary of what they were doing to the discs.

Edited by GreatPretender on Friday 16th May 15:16

[DiscoColin]

An alternative is an aftermarket stud conversion kit, which also eliminates the risk of stripping the threads in your uprights... Such a change lies somewhere in my future (though probably not until after the original carriers are lifed out and due to be replaced. Which is a way away yet, and may eventually coincide with a CL to 5 bolt conversion. But that is a story for another day).