Milano Brembo Front Caliper Rebuild

**torcia** · #1 (**permalink**) 02-04-2009, 09:20 AM

Posted a question in the Milano/75 forum but thought I would post here as well for the brake experts. The thread in the Milano/75 forum is here.

What I am trying to find are some sources for replacement 48mm caliper pistons. Eric from PMB Performance may have what I need in a 48mm stainless steel piston but I am open to other sources/ideas. My stock pistons are a little pitted and thought I should replace them.

Any drawbacks to going with stainless steel instead of the plated steel of the original?

Thanks

**PMB_Performance** · #2 (**permalink**) 02-04-2009, 11:47 AM

Sorry I mis-read your email last night (too tired).

Anyway, yes, those pistons will be the same 24+mm depth. Should be perfect.

I'd love to get my hands on a pair of those calipers. Anyone have some extras laying around?

We've been putting SS pistons in ATE S-Calipers for years and years with no problems. Plated pistons almost "always" pit as described in my reply.

**jburning17** · #3 (**permalink**) 02-07-2009, 12:59 PM

Hi all,

I'm glad this thread got started. I am working my way through a rebuild of these calipers myself.

My pistons have a little flaking on the last 3mm of the piston. As near as I can tell, this portion won't come into contact with the seals so it should be fine.

What I am trying to figure out is the proper torque for bolting these guys back together. Eric, you mentioned 17 ft-lbs for the Ate calipers. What would you suggest for the brembos? BTW, I have carefully chased the threads on the bolts and the calipers to make sure I am not fighting any obstructions when I go to cinch them up.

Thanks,
Jon

**PMB_Performance** · #4 (**permalink**) 02-08-2009, 09:41 PM

Let me go on record as saying "don't use those pistons".

Not that that's behind us, what size are the fasteners? If these are, as I suspect, an alloy copy of the A-Caliper, they should have M9 fasteners (14mm nuts). I would torque as follows:

(left to right, number the bolts with the nuts facing you 1-2-3-4)

2-3-1-4 at 10ftlbs.
2-3-1-4 at 26ftlbs.

**jburning17** · #5 (**permalink**) 02-08-2009, 10:34 PM

Quote:

Originally Posted by PMB_Performance

Let me go on record as saying "don't use those pistons".

Not that that's behind us, what size are the fasteners? If these are, as I suspect, an alloy copy of the A-Caliper, they should have M9 fasteners (14mm nuts). I would torque as follows:

(left to right, number the bolts with the nuts facing you 1-2-3-4)

2-3-1-4 at 10ftlbs.
2-3-1-4 at 26ftlbs.

**PMB_Performance** · #6 (**permalink**) 02-11-2009, 10:04 PM

M10 x 1.5 should be around 34ftlbs. Seeing as how it is going into Aluminum I would suggest 30ftlbs.

Thanks for the call today.

**jburning17** · #7 (**permalink**) 02-12-2009, 08:21 AM

Quote:

Originally Posted by PMB_Performance

M10 x 1.5 should be around 34ftlbs. Seeing as how it is going into Aluminum I would suggest 30ftlbs.

Thanks for the call today.

**PMB_Performance** · #8 (**permalink**) 02-12-2009, 08:16 PM

I have a pair of those calipers coming as well so, I'll be doing the same thing you're doing.

I need to finish Brian's rear calipers first! "This Weekend" (there, I said it in a public forum)

We're having stainless pistons commissioned for the 38mm rear integrated handbrake calipers as well. First batch of 12 should be coming soon. These will be good for the Alfa rear calipers as well as the rare 914-6 rear calipers and the Ferrari 308 rear calipers.

**PMB_Performance** · #9 (**permalink**) 02-12-2009, 08:25 PM

Anyone know how to get in touch with Brian? ossodiseppia?

PM's not working

**PMB_Performance** · #10 (**permalink**) 02-15-2009, 03:40 PM

Quote:

I need to finish Brian's rear calipers first! "This Weekend" (there, I said it in a public forum)

rawr · #11 (**permalink**) 02-26-2009, 09:21 AM

have a question, i have a gtv6, took the rear left caliper off to rebuild, I had seperated the two halfs. Auto part vendor said i shouldnt have done that and that now its junk. ?? is this true?

**PMB_Performance** · #12 (**permalink**) 03-02-2009, 08:32 PM

Nope. Not at all. If it is the caliper above then you'll need new seals and you'll need to torque them as follows upon re-assembly:

(numbered from left to right 1-2-3-4)

Torque to 7ftlbs. in the following sequence:
2-3-1-4

Torque to 17ftlbs. in the following sequence:
2-3-1-4

Hope that helps.

Jon... did the pistons make it OK?

E.

**PMB_Performance** · #13 (**permalink**) 03-25-2009, 10:02 AM

Just finished a set of the Milano's myself. Does anyone have more cores of these?

iachella · #14 (**permalink**) 08-06-2009, 08:39 PM

Just stumbled across this thread searching for Brembo kits. I have GTV6 Brembo front calipers that I plan to use on my Alfetta. My first question is are the rebuild kits availalble for Brembo front calipers? If so, who supplies them?

Are the pistons mentioned in the beginning of the thread a direct replacement for the GTV6 front caliper pistons?

My last question involves knowledge of both GTV6 and Alfettas, calipers and discs. If I remove the spacer from the Brembo calipers, can I use them on the stock Alfetta discs? This is a tricky one. I've seen reference to it, but I wanted a confirmation before I try it. I don't want to split the calipers unless it is true. I have the GTV6 vented calipers, but I just don't want to go through the redrilling process.

Thanks,

**PMB_Performance** · #15 (**permalink**) 08-06-2009, 10:35 PM

The fairly inexpensive ATE kit for a 78 911SC will work perfectly with these. I can get them to you for about $14.00 per caliper.

The pistons are also a perfect fit. They are $32 each.

Hope that helps.