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> Mtech Brake Failure!
NaanBread
post 29th September 2012 17:31
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these discs havent done many miles, but I suppose I did hammer them but this is unexpected and I urge people to check theres if they have them. I might email the company to find out why they have gone this bad.







This car effectivley has no brakes and was extremely difficult to stop fast haha

only the inside as well, the outside is fine.


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aamrit
post 29th September 2012 19:32
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Jesus! How many miles you done?

Been looking at these recently myself as mine will be due soon.

Didnt GE & Langers have some too?

Has the coating literrally come off under hard braking?


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NaanBread
post 29th September 2012 20:06
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I dont really know how many miles Ive done with these discs to be honest, but the past 10k has been driven by old people so they havent used them like I would of done. I cant of done much more than 5-10k.

I cant remember whos fitted them, thats what im hoping this thread will find out, to see if anyone elses are the same.


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GialloEvo94
post 29th September 2012 20:32
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Interestingly, my old discs (standard ones) went exactly the same way and got an MOT advisory as a result thus the reason I binned them and fitted MTECs. I don't know exactly why my old discs they went like that but it looked to be a combination of the inside pad not doing it's job properly (piston/slider/pad issue) plus corrosion setting in which was never getting cleaned off properly by the pad thus causing the face of the disc to end up in the same sorry state as yours over a period of time. My MTECs have been on for over a year now and they are still perfect and as shiny as a whistle on both sides (I was under the car a few weeks ago). I serviced my calipers when I replaced the discs which may be the reason.

When you replace the discs I would overhaul the calipers to ensure the pistons aren't seized and make sure the sliders are properly lubricated. Also make sure you use some decent (branded) pads and make sure you do the proper bedding-in procedure.


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NaanBread
post 29th September 2012 20:54
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I always grease the sliders etc, but who knows, the brakes have always been very good on this car, and even better when I first fitted these discs. I have ferrodo baggins gold ring pads so I doubt its them.

whats the proper bedding in procedure?


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GialloEvo94
post 29th September 2012 21:05
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QUOTE(NaanBread @ 29th September 2012 21:54) *
whats the proper bedding in procedure?

Pretty simple really. Avoid any heavy or emergency braking for at least the first 200-300 miles. This helps to prevent the faces of the pads or discs glazing over and also ensures the pads create a good even footprint on the disc faces.

Out of interest, what discs are you replacing them with?


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Smallville
post 29th September 2012 21:13
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Don't take this the wrong way guys, but that's the exact reason not to buy budget discs. Nath coulda come of far far worse and if I'm honest, look down on people who buy cheap brakes to save a few sad.gif
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GialloEvo94
post 29th September 2012 21:20
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QUOTE(Smallville @ 29th September 2012 22:13) *
Don't take this the wrong way guys, but that's the exact reason not to buy budget discs. Nath coulda come of far far worse and if I'm honest, look down on people who buy cheap brakes to save a few sad.gif

Mine are fine and MTEC aren't exactly budget. You just don't get ripped off like you do with Tarox or Brembo ones where most of the money you pay is for the name like you do with most "designer" brands of any type of goods. Do a bit of research on other car forums and you'll see that MTEC discs get very high praise.


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Smallville
post 29th September 2012 21:55
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QUOTE(GialloEvo94 @ 29th September 2012 22:20) *
Mine are fine and MTEC aren't exactly budget. You just don't get ripped off like you do with Tarox or Brembo ones where most of the money you pay is for the name like you do with most "designer" brands of any type of goods. Do a bit of research on other car forums and you'll see that MTEC discs get very high praise.


1st of all, I read what I put and noticed that it came across rather strong and aggresive so sorry about that GE thumbsup.gif

Oh and I do agree somewhat that what Brembo charge for standard discs are a little bit more but totally agree with your statement with Tarox, I bought some G88 discs for the GTA and they didn't last a month!! But they replaced them free of charge when I contacted them about it.

What I think I am trying to say or put into words is that, with Brembo, Tarox etc etc, they 'might' have better quality control than brands like MTEC etc. And I just done a quick search on the web and see that they are well known and get good praise, could it just been a bad batch?

Also, I still had problems with the G88s so went with Pagid discs and not looked back smile.gif
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GialloEvo94
post 29th September 2012 23:01
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No need to apologise...everyone is entitled to their own opinion biggrin.gif

I've had Tarox and Red Dot discs on cars before and I can honestly say that the MTECs seem to be just as good at a fraction of the cost. I've already joined the "designer" club anyway with my Lancia which has AP Racing discs fitted and I won't tell you how much each of those cost because you'll have a heart attack if I do laugh.gif I'm therefore quite happy to go with the "budget" option on the Alfa biggrin.gif


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NaanBread
post 30th September 2012 00:10
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QUOTE(GialloEvo94 @ 29th September 2012 22:05) *
Pretty simple really. Avoid any heavy or emergency braking for at least the first 200-300 miles. This helps to prevent the faces of the pads or discs glazing over and also ensures the pads create a good even footprint on the disc faces.

Out of interest, what discs are you replacing them with?


yeh thats ok then i didnt know if you did it differently ha. Well I was looking at Brembo, but If this sort of wear is normal then I may revert to Mtech again. Ive never seen damage to a disc quite like this before, and on both sides so equal only on the inside.


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tom145
post 30th September 2012 10:43
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how about ebc discs? are they any good? i was thinking of geting them with the green pads untill i fit big brake kit. anyone used them before?
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stevepx
post 30th September 2012 19:32
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Just to throw my penny's worth in... I bought the MTEC at the same time as GE and to be honest cheap EBC pads but aside from some excessive wear on the pads (too soft) they have performed really well with no sign of the wear/damage that Naan has seen. They are not cheap but like GE said not over priced and I agree with Scott that brakes should not be scrimpt upon. I had Pagid discs and pads before and they were useless under heavy braking, after 3 hard stops they were dead. Think there might have been something wrong with Naan's calipers like GE has mentioned for this wear to occur especially on the front.. I think Langers fitted EBC discs and pads and swore by them...(who bought Langers black Phase 1). smile.gif

Naan, deffo go back to MTEC and see if they have an explanation for you, they may even supply replacements, worth a try and certainly worth bringing it to their attention...

This post has been edited by stevepx: 30th September 2012 19:33


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Smallville
post 30th September 2012 21:52
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What you guys are these, I ended up uprating my Pagid discs as they we're fine but I felt that they might not hold up to much after a while.

http://www.compbrake.com/brake-kits/two-pi...-bell-pair.html

Plus Pagid RS-15 Ceramic pads, the braking is flipping amazing! biggrin.gif
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gbzone
post 1st October 2012 06:20
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528 a pair of discs - when I win the lottery I'll treat myself - oh wait, won't need to - I'll buy a NEW Alfa:)

Seriously though, how can they justify that kind of price....

This post has been edited by gbzone: 1st October 2012 06:21
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Smallville
post 1st October 2012 09:45
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QUOTE(gbzone @ 1st October 2012 07:20) *
528 a pair of discs - when I win the lottery I'll treat myself - oh wait, won't need to - I'll buy a NEW Alfa:)

Seriously though, how can they justify that kind of price....


They are two-piece discs with all the gublins to fit to the GTA, expensive kinda bit they are better than any single disc on each axle and they weigh 'upto' 40% less in unsprung weight smile.gif
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IgoRR
post 1st October 2012 10:21
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They are intended for race use, not for fashion show offs or a few hard brake stops biggrin.gif
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Smallville
post 1st October 2012 11:43
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QUOTE(IgoRR @ 1st October 2012 11:21) *
They are intended for race use, not for fashion show offs or a few hard brake stops biggrin.gif


True, I went for them becaus of the weight savings over standard discs smile.gif
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NaanBread
post 3rd October 2012 13:13
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Back on track for a moment...

Rang up Mtech, and the lass on the phone was very helpful. She explained that if you use your car for rast road/track then dont get drilled discs as they get to hot and do exactly what my discs have done! (I asked her what discs are best before i told her what had happened to mine)

shes said for track use get dimpled and grooved as the heat wont travel through and cook the inside disc. Makes sense to me. She asked what pads Im using and I told her about Ferrodo baggins Premium and she said they are pretty much Green Stuff pads so you cant go wrong with them.

And you can obviously buy direct over the phone or if anyone wants them putting on ebay she can do.

So the end of the day its my fault for driving to fast and braking to hard, and also cos I thought drilled would be better, but obviously not. Now hopefully all will be well smile.gif

Hope this helps anyone in the future.



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Alfa-Si
post 3rd October 2012 13:19
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I'm glad that was your outcome as its just validated my order of a full set of dimpled and grooved mtec discs in a group buy in FCCUK

Now just have to decide on pads.
Which were you using with yours?


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