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Technical 1.2 Lounge Brembo discs & pads.

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Technical 1.2 Lounge Brembo discs & pads.

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marky9074

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Joined
Jul 25, 2021
Messages
52
Points
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Location
Ashford, Kent
I ordered from Autodoc a set of disc and pads, luckily with the option to send back within 200 days. For the 1.2 it states the following will fit:
  • 09.8616.11 240mm / 20mm / 41mm ventilated
  • 08.5085.11 240mm / 11mm / 40mm solid (2015 onward so N/A)
  • 08.5085.11 240mm / 11mm / 40mm solid (With variants 08.5085.75 Max & 08.5085.1X Xtra that are grooved/drilled respectively).
I didn't give it much thought and ordered the first thinking it would be an 'upgrade', and realised today that they will not fit. Not sure what 1.2 they would fit given the 20mm thickness. Both Brembo and Autodoc stated it would fit, but alas they do not. I think I will reorder with 08.5085.75 Max, but prices seem to have rocketed for some reason....

I also ordered the P 24 147 brake pad set which thankfully did fit.

Now, with one front wheel and caliper off I could see the two bolts holding the disc on were tight but not fully engaged (the disc was rattling). I removed them and then tried to tighten them up but didn't get any further in than they were before. I put the wheel back on and then compared with the other side and these were tight to the point I couldn't get them off and feared I would either round them off or they would snap.... There was also not much meat on them to get a socket on either.

So, any tricks of the trade with these retainer bolts?
 
Model
1.2 Lounge
Year
2015
Mileage
70000
Some sort of impact driver be it manual or gun type normally gets them out with a bit of persistence. If you have no choice other than a socket and bit then make sure you strike it a few times with a hammer first to try and break the rust seal a bit to give you a fighting chance of not rounding it off. Penetrating fluid (not WD40) often helps as well
 
marky9074 said:
So, any tricks of the trade with these retainer bolts?
Click to expand...
I assume you're talking about the two pins that locate the disc and the wheel.

Don't overtighten them; they are only there to help locate the disc and the wheel; all the clamping force is provided by the wheel bolts when the wheel is refitted.

When refitting, use a dab of anti seize and do them up gently so that they are just a little more than finger tight. The next time, removal will be easy!

If they loosen in service, it doesn't matter at all; the wheel will stop them from coming very far out.
 
Greasytrucker said:
Some sort of impact driver be it manual or gun type normally gets them out with a bit of persistence. If you have no choice other than a socket and bit then make sure you strike it a few times with a hammer first to try and break the rust seal a bit to give you a fighting chance of not rounding it off. Penetrating fluid (not WD40) often helps as well
Click to expand...
Just ordered a set of Teng short impact sockets and adapter to go in my impact driver. I'm missing a 12mm and never had an 11mm in my socket set anyway. Suggestions for penetrating oil that's not WD40, MOTP can on Amazon looks ok?
 
jrkitching said:
I assume you're talking about the two pins that locate the disc and the wheel.

Don't overtighten them; they are only there to help locate the disc and the wheel; all the clamping force is provided by the wheel bolts when the wheel is refitted.

When refitting, use a dab of anti seize and do them up gently so that they are just a little more than finger tight. The next time, removal will be easy!

If they loosen in service, it doesn't matter at all; the wheel will stop them from coming very far out.
Click to expand...
Yeah, those are what I meant. I assume they are supposed to wind in freely, so not sure if I need to tap out the thread as they definitely do not go in nicely. Assume these are easily replaced as well (assuming you can get them out...)
 
marky9074 said:
Just ordered a set of Teng short impact sockets and adapter to go in my impact driver. I'm missing a 12mm and never had an 11mm in my socket set anyway. Suggestions for penetrating oil that's not WD40, MOTP can on Amazon looks ok?
Click to expand...
Any really, I normally use Plusgas but just noticed Screwfix don’t appear to stock it any more which was where I used to get it from.
 
Thanks for that. PlusGas ordered from Amazon.

Quick question. The pads I took out were the worst I have ever seen, the outsides had probably 1mm at best. However the insides, with wear indicators/sensors still had 2-3mm. I suspect they would have been metal on metal on one side, and the other still not triggering the sensor? Is that normal wear?
 
marky9074 said:
Thanks for that. PlusGas ordered from Amazon.

Quick question. The pads I took out were the worst I have ever seen, the outsides had probably 1mm at best. However the insides, with wear indicators/sensors still had 2-3mm. I suspect they would have been metal on metal on one side, and the other still not triggering the sensor? Is that normal wear?
Click to expand...
Probably normalish. The calipers tend to stick. The slider pin rubber bushes go soft and allow the caliper to flex. When this happens they stick. Back pads then do most of the work so wear more. Replacement calipers are cheap and cure the problem but regular stripping and cleaning is required to keep things working well. I have never seen equal pad wear on the earlier caliper types. Do a search, there are a variety of opinions but all seem to agree about maintenance. If your disc pin bolts dont screw in they are likely cross threaded now, or in the past. They cost pennies to replace.
 
I have just had a moment. Got around to changing the discs and did a search for torque settings for the brake caliper and kept seeing 105nm. Anyway didnt get anywhere near that and sheared the bolt, so am now scratching my head on what to do now. Obviously will need replacement bolt (not sure which - was a 17mm socket) and presumable will need to drill and tap out?
 
Ok, so this is just the carrier (or is it called reaction frame?) that bolts on so maybe an easy change if I can find the part locally.
 
Last edited:
Hmm, I spent all night looking for this part online and did not find anything. Was hoping this would be available from a local motor factors but scratching my head now. Might get car into garage and take it off again and see if I can extract the bolt...
 
marky9074 said:
Hmm, I spent all night looking for this part online and did not find anything. Was hoping this would be available from a local motor factors but scratching my head now. Might get car into garage and take it off again and see if I can extract the bolt...
Click to expand...
why not try an e-bay search for a used part? should be loads of pictures for you tom compare whats broken with whats on offer! cant see it being to expensive!
 
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