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Re: Alfa 330mm rotors
[Re: ]
#1575354
30/05/2016 00:10
30/05/2016 00:10
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Joined: Dec 2007
Posts: 2,252 Windsor/ Reading
knight7660
Competition Level
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Competition Level
Joined: Dec 2007
Posts: 2,252
Windsor/ Reading
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it may run a 330mm disc but the brake pad in the calipers look tiny. would have to look into that
LE53 (452BHp & 389ftlb's with Quaife) Wine red VIS FOOFY Audi RS4 B7
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Re: Alfa 330mm rotors
[Re: Begbie]
#1575934
04/06/2016 13:24
04/06/2016 13:24
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digitalundgrd
Unregistered
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digitalundgrd
Unregistered
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I run 330mm on the front (and 300mm) on the rear and I never had any ABS issue when tracking the car around Spa. I'd say you have other problems elsewhere that is causing the ABS to kick in. Problem solved After 500-600 miles and proper bed in of the pads/discs - braking is stronger and no early triggering of the abs Last week I took part in the Bulgarian Track day for Italian cars and I won second place with the coop No problems with the brakes during the event
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Re: Alfa 330mm rotors
[Re: Hoops82]
#1582088
09/08/2016 13:01
09/08/2016 13:01
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Julien
Unregistered
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Julien
Unregistered
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Lancia delta 3's of 09 vintage use 330mm discs that look like they will fit directly onto a 16vt hub. I have ordered some part number Brembo 09.A500.10 (superceeded by the coated version 09.A500.11)to be fitted with the alfa 166 4 pot brembo callipers and a spacer bracket to get the correct axial offset. Disc thickness is the correct 28mm, PCD is the correct 4*98 (rare size) and hub center is very similar. I will update if it works, i think others have done it on other forums but haven't found anything on here. I have this setup on my coupe, it works perfectly ! An other member has also this kit and there is no problem.
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Re: Alfa 330mm rotors
[Re: Hoops82]
#1582291
11/08/2016 16:50
11/08/2016 16:50
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Julien
Unregistered
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Julien
Unregistered
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Thanks Julien,
ALors puis tu a mis les 284mm disques a l'arriere? No, (je vois qu'il te reste un peu de Français ) In fact, going 330mm only gives you something like 10% more "front stopping power" from 284mm discs (I had made a calculation but don't remember where I put the file). This 10% are nothing on the road, and installing sport suspensions/short springs will increase braking power on rear wheels (less mass transfer and the brake valve linked to the rear anti-roll bar will be less active = more brake pressure). Stock rear solid 240mm discs are big enough even for track day.
Last edited by Julien; 11/08/2016 16:53.
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Re: Alfa 330mm rotors
[Re: ]
#1582664
17/08/2016 01:22
17/08/2016 01:22
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digitalundgrd
Unregistered
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digitalundgrd
Unregistered
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I have this setup on my coupe, it works perfectly ! An other member has also this kit and there is no problem. Me too
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Re: Alfa 330mm rotors
[Re: Freddan72]
#1582959
20/08/2016 22:13
20/08/2016 22:13
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Julien
Unregistered
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Julien
Unregistered
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Can't find any info regarding the bracket for the Alfa 166 caliper together with 330x28 disc. Do you have a CAD drawing Julien? Yes I have one i will post it As sonn as possible
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Re: Alfa 330mm rotors
[Re: ]
#1582962
20/08/2016 22:50
20/08/2016 22:50
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Joined: Oct 2010
Posts: 555 Bulgaria
Ferrarist
Enjoying the ride
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Enjoying the ride
Joined: Oct 2010
Posts: 555
Bulgaria
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In fact, going 330mm only gives you something like 10% more "front stopping power" from 284mm discs (I had made a calculation but don't remember where I put the file).
Totally agree, but i guess you know that if using wider front tires, slicks or semi's, this 10% will be more than that..... IMHO the biggest advantage of 330mm is that they can not overheat.....even on trackday.....harsh trackday.....
20VT - Alfa 156 2.0 - Alfa 156 Mid-Engined RWD - Locost 20VT
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Re: Alfa 330mm rotors
[Re: Ferrarist]
#1582965
20/08/2016 23:31
20/08/2016 23:31
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Julien
Unregistered
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Julien
Unregistered
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In fact, going 330mm only gives you something like 10% more "front stopping power" from 284mm discs (I had made a calculation but don't remember where I put the file).
Totally agree, but i guess you know that if using wider front tires, slicks or semi's, this 10% will be more than that..... IMHO the biggest advantage of 330mm is that they can not overheat.....even on trackday.....harsh trackday..... Yes of course it's more for endurance than stopping power as original discs with good pads are enough...but only for 1 or 2 big stop, after they nearly burn
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Re: Alfa 330mm rotors
[Re: Freddan72]
#1582966
20/08/2016 23:33
20/08/2016 23:33
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Julien
Unregistered
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Julien
Unregistered
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Can't find any info regarding the bracket for the Alfa 166 caliper together with 330x28 disc. Do you have a CAD drawing Julien? Are alfa 166 calipers the same as fiat coupe 20VT ?
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Re: Alfa 330mm rotors
[Re: ]
#1583008
21/08/2016 23:37
21/08/2016 23:37
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Joined: Oct 2010
Posts: 555 Bulgaria
Ferrarist
Enjoying the ride
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Enjoying the ride
Joined: Oct 2010
Posts: 555
Bulgaria
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Can't find any info regarding the bracket for the Alfa 166 caliper together with 330x28 disc. Do you have a CAD drawing Julien? Are alfa 166 calipers the same as fiat coupe 20VT ? No - Alfa 166 Brembo has 150mm bolt distance and 20VT brembo is 130mm......
20VT - Alfa 156 2.0 - Alfa 156 Mid-Engined RWD - Locost 20VT
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Re: Alfa 330mm rotors
[Re: ]
#1583009
21/08/2016 23:59
21/08/2016 23:59
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Wombat
Unregistered
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Wombat
Unregistered
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I believe GTV 24v 4 pot calipers bolt straight to the Coupe 20VT uprights.
I'll double check as I have a set and some spare Coupe uprights, but I kind of matched them up a year or so ago and recall they seemed to bolt straight on.
I must admit I thought 166 calipers were the same but have never had a set to play with.
Last edited by Wombat; 22/08/2016 00:12.
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Re: Alfa 330mm rotors
[Re: ]
#1583019
22/08/2016 09:14
22/08/2016 09:14
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Joined: Dec 2009
Posts: 148 Sofia, Bulgaria
injekciona
On a journey
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On a journey
Joined: Dec 2009
Posts: 148
Sofia, Bulgaria
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The calipers of the 20VT, 406 Coupe, GTV and the first 147/56GTA are all the same(130mm bolt distance and 305x28 brake discs). But the 166 and the Lancia Kappa ones are different, they have bigger brake pads, 150mm bolt distance and 310x28mm brake discs.
Jet Black E46 M3 EX - Broom Yellow Fiat Coupe 1.8 -> 2.0 16VT Speed Red Fiat Coupe 2.0 16VT R.I.P.
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Re: Alfa 330mm rotors
[Re: ]
#1583021
22/08/2016 09:29
22/08/2016 09:29
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Julien
Unregistered
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Julien
Unregistered
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So, This is the adapters drawing to put 20vt calipers + 330mm discs on 16vt hub. Thickness of the main part is 20mm and material is stainless steel. You can go smaller if you want (like 12-15mm) but for me, not having any hesitation when hard braking at 250+kph easily worth 300grams more on each front hub You need to add some big "washers" of 8mm thick. those are visible on this photo : The small weld has just a "location" role, not strength, also you could weld it all around (that's what I did). If you're not sure, I can give you a contact to have them made (main part + washers + 12.9 grade bolts) for something around 150€ a pair + shipping cost. Regards
Last edited by Begbie; 22/08/2016 13:56. Reason: Fixed image tags
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Re: Alfa 330mm rotors
[Re: ]
#1583044
22/08/2016 13:41
22/08/2016 13:41
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Joined: Oct 2010
Posts: 555 Bulgaria
Ferrarist
Enjoying the ride
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Enjoying the ride
Joined: Oct 2010
Posts: 555
Bulgaria
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Thickness of the main part is 20mm and material is stainless steel. You can go smaller if you want (like 12-15mm) but for me, not having any hesitation when hard braking at 250+kph easily worth 300grams more on each front hub
It's better save than sorry, but i'm a "less weight as possible" freak, and was OK with 10mm thick bracket.....Driving AR 156, 1100kg, with 250\64\18 full slicks in front.......Just for your information, it's not advice or recommendation.....
20VT - Alfa 156 2.0 - Alfa 156 Mid-Engined RWD - Locost 20VT
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Re: Alfa 330mm rotors
[Re: Ferrarist]
#1583084
22/08/2016 22:53
22/08/2016 22:53
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Julien
Unregistered
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Julien
Unregistered
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Thickness of the main part is 20mm and material is stainless steel. You can go smaller if you want (like 12-15mm) but for me, not having any hesitation when hard braking at 250+kph easily worth 300grams more on each front hub
It's better save than sorry, but i'm a "less weight as possible" freak, and was OK with 10mm thick bracket.....Driving AR 156, 1100kg, with 250\64\18 full slicks in front.......Just for your information, it's not advice or recommendation..... No problem it's always good to have some returns from others . I wonder one thing : your brackets also have 2 threads in it or did you use bolts + nuts for mounting it on the hub ? (that's the main reason I took 20mm because I wanted to have bolts directly tightened in the adapter with max torque for 12.9 / M12, which is something around 110Nm. I know this is well overrated but this way I can sleep on both ears ). @t Begbie : thanks for the image redirecting (didn't have access to host server at work... )
Last edited by Julien; 22/08/2016 22:54.
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Re: Alfa 330mm rotors
[Re: ]
#1583192
24/08/2016 15:39
24/08/2016 15:39
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Joined: Oct 2010
Posts: 555 Bulgaria
Ferrarist
Enjoying the ride
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Enjoying the ride
Joined: Oct 2010
Posts: 555
Bulgaria
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I wonder one thing : your brackets also have 2 threads in it or did you use bolts + nuts for mounting it on the hub ?
Bolts+ nuts......
20VT - Alfa 156 2.0 - Alfa 156 Mid-Engined RWD - Locost 20VT
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Re: Alfa 330mm rotors
[Re: ]
#1583469
29/08/2016 08:54
29/08/2016 08:54
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digitalundgrd
Unregistered
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digitalundgrd
Unregistered
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This is the adapters drawing to put 20vt calipers + 330mm discs on 16vt hub.
20vt calipers use smaller pads than 166 4pot Brembo. IMO there will be around 10mm of the brake disc that will become rusty because disc/pads won't contact with each other there. So what is the point of using bigger discs (330mm) when the pad area remains the same as with the oem smaller disc (305mm) ?
Last edited by digitalundgrd; 29/08/2016 08:57.
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Re: Alfa 330mm rotors
[Re: ]
#1583471
29/08/2016 09:26
29/08/2016 09:26
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Julien
Unregistered
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Julien
Unregistered
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This is the adapters drawing to put 20vt calipers + 330mm discs on 16vt hub.
20vt calipers use smaller pads than 166 4pot Brembo. IMO there will be around 10mm of the brake disc that will become rusty because disc/pads won't contact with each other there. So what is the point of using bigger discs (330mm) when the pad area remains the same as with the oem smaller disc (305mm) ? Those adapters are for 16VT, not 20vt. Anyway, even if you put them on 20VT (with 16VT hub) you will have more braking power because the braking point is further from the wheel rotating axis. You will also have more endurance as the discs are bigger (more energy/heat can be absorbed). Pads area is always linked to pistons area/pad material : put a giant pad with a hard compound on a tiny brake piston and you will get nearly no braking power.
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Re: Alfa 330mm rotors
[Re: ]
#1583598
31/08/2016 09:11
31/08/2016 09:11
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digitalundgrd
Unregistered
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digitalundgrd
Unregistered
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Re: Alfa 330mm rotors
[Re: ]
#1586821
16/10/2016 07:32
16/10/2016 07:32
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Joined: May 2007
Posts: 229 Perth, Western Australia
Hoops82
Making a profit
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Making a profit
Joined: May 2007
Posts: 229
Perth, Western Australia
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I have now amassed the parts required to convert to 330mm discs with Alfa 166 brembo callipers and am pretty excited. The callipers are in great condition and have excellent piston freedom and fit. The discs seem huge and are coated in the central ducts so shouldn't rust on the non friction surfaces for a while. I ve cleaned and coated the callipers in a gloss res to make the car faster and the brakes even better . I have new steel braided lines also and a pressure bleeder to get all the air out. Now I just have to wait until I have the time to do it. In the same place as the car and get the brackets machined. pretty excited anyway. If anyone has a template they wish to share for these then it would be much appreciated. If not then I will share mine when i have finished the fabrication.
Last edited by Hoops82; 16/10/2016 22:53.
Resting UK
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