Did I buy the right Alfa brake calipers? |
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Did I buy the right Alfa brake calipers? |
Tdskip |
Nov 15 2020, 09:24 AM
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#1
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Found these on the Alfa forum I frequent and ready-fire-aim'd them.
One caliper is stamped "Brembo". The other is not. They dimensions identical between them and both 3 inch bolt spacing (they look difference sizes in the picture since one strut was closer to camera). Pistons look identical too. They are from a late Alfa GTV so should be OK, but I was expecting that both would have "Brembo" on the casting. Anyone come across these that didn't have the Brembo stamping on both left & right? Thanks and hope everyone is having a good weekend so far. |
mepstein |
Nov 15 2020, 09:30 AM
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#2
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914-6 GT in waiting Group: Members Posts: 19,270 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
They look correct to me. Not all of them seem to have the stamping.
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Tdskip |
Nov 15 2020, 09:32 AM
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#3
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
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GregAmy |
Nov 15 2020, 10:25 AM
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#4
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Advanced Member Group: Members Posts: 2,297 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States |
Are these the same as the BMW calipers that many use on the 4-bolt cars?
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Tdskip |
Nov 15 2020, 10:45 AM
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#5
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Are these the same as the BMW calipers that many use on the 4-bolt cars? Good morning. I believe so off a very specific 320i but that needs to be double checked. Excellent thread here; http://www.914world.com/bbs2/index.php?showtopic=104276 |
ConeDodger |
Nov 15 2020, 11:18 AM
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#6
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Apex killer! Group: Members Posts: 23,584 Joined: 31-December 04 From: Tahoe Area Member No.: 3,380 Region Association: Northern California |
Not the same as the 320i. That caliper has to be modified to work. The Alfa GTV brakes are aluminum and bolt right up.
Mine both say Brembo and Eric shined them up and anodized them for me! Attached thumbnail(s) |
Tdskip |
Nov 15 2020, 11:43 AM
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#7
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
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GregAmy |
Nov 15 2020, 02:31 PM
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#8
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Advanced Member Group: Members Posts: 2,297 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States |
Thanks for the info.
What was the specific make/model/year of Alfa for these? I have a set of the BMW calipers on my street car and was planning to swap those on the race car, but if these are better I'll go on a hunt for a pair (sticking with 4-bolt struts). That other thread had distinguishing names for them ("S", "L", "M") but no specific original applications. |
Tdskip |
Nov 15 2020, 02:33 PM
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#9
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Late model Milano and GTV6 came with them, occasionally come up but increasing hard to find due to people like us.
I do not know what the year cut over for these is, will ask the Alfa shop on Monday. |
GregAmy |
Nov 15 2020, 03:40 PM
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#10
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Advanced Member Group: Members Posts: 2,297 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States |
Thanks.
And what's the correct rotor? I bet there's enough space in there for a vented rotor. |
bdstone914 |
Nov 15 2020, 08:05 PM
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#11
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bdstone914 Group: Members Posts: 4,520 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
Thanks for the info. What was the specific make/model/year of Alfa for these? I have a set of the BMW calipers on my street car and was planning to swap those on the race car, but if these are better I'll go on a hunt for a pair (sticking with 4-bolt struts). That other thread had distinguishing names for them ("S", "L", "M") but no specific original applications. 85-86 Alfa GTV |
bdstone914 |
Nov 15 2020, 08:05 PM
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#12
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bdstone914 Group: Members Posts: 4,520 Joined: 8-November 03 From: Riverside CA Member No.: 1,319 |
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Tdskip |
Nov 15 2020, 08:12 PM
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#13
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Thanks. And what's the correct rotor? I bet there's enough space in there for a vented rotor. You can run them in a solid rotor if you remove the spacer. With the spacer they need a vented rotor. Hi Bruce! What is this spacer thing you speak of? :-) |
GregAmy |
Nov 15 2020, 08:33 PM
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#14
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Advanced Member Group: Members Posts: 2,297 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States |
What is this spacer thing you speak of? Ditto. What spacer? For the race car I'm likely to spec out a Coleman hat and vented rotor ring that fits in there nicely...unless someone knows of a thicker bolt-in vented rotor with the same stud spacing and hubcentric. If I go that way then the BMW calipers are perfectly fine for the street car. I ran it that way at a Track Night in America and never had any brake issues (no clue what the compound is). |
jcd914 |
Nov 15 2020, 10:54 PM
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#15
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Advanced Member Group: Members Posts: 2,081 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
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AZBanks |
Nov 16 2020, 01:13 AM
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#16
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Senior Member Group: Members Posts: 1,062 Joined: 7-December 05 From: New River, AZ Member No.: 5,245 Region Association: Southwest Region |
The 320i calipers work on an early car but need a little machining to work on a late car.
Attached thumbnail(s) |
Mark Henry |
Nov 16 2020, 05:32 AM
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#17
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Thanks And what's the correct rotor? I bet there's enough space in there for a vented rotor. [/quote] I'm using the 914/6 rotor , bolts right in. I just picked up a set of 911T struts and hubs for a future project. I already have a set of alfa cores in my collection. |
GregAmy |
Nov 16 2020, 07:35 AM
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#18
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Advanced Member Group: Members Posts: 2,297 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States |
The spacer between caliper halves is about 9mm.... Ah! Thanks. I'm using the 914/6 rotor , bolts right in. That's fine and good if you're gettin' all fancy-schmancy with 5-bolt 911 suspension. (IMG:style_emoticons/default/wink.gif) But I'd like to retain my 4-bolt. Honestly, if I went 5-bolt there are a lot better braking options... I'll do some research to see if I can find an appropriate 4x130 rotor with the right offset and hubcentric (I make myself lol sometimes). More likely than not I'll work up a Coleman 2-pc hat and rotor design (unless someone has done it?) Greg |
mepstein |
Nov 16 2020, 07:53 AM
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#19
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914-6 GT in waiting Group: Members Posts: 19,270 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
The big advantage for these Alfa calipers is you can unbolt your M calipers and bolt these on. No mods required.
Half the weight of M calipers Larger pad size that almost equals S calipers Uses a 914-6 or 911T rotor that’s available at flaps for $60 ish. Disadvantages- Higher cost to purchase Higher cost to restore Usually needs new pistons - PMB stocks them. |
Tdskip |
Nov 16 2020, 08:46 AM
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#20
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
The big advantage for these Alfa calipers is you can unbolt your M calipers and bolt these on. No mods required. Half the weight of M calipers Larger pad size that almost equals S calipers Uses a 914-6 or 911T rotor that’s available at flaps for $60 ish. Disadvantages- Higher cost to purchase Higher cost to restore Usually needs new pistons - PMB stocks them. And those are vented rotors I believe, right? (Good morning btw) |
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