911S brakes on a GTV ? - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 10 (permalink) Old 07-19-2019, 08:50 AM Thread Starter
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911S brakes on a GTV ?

Has anyone fitted early Porsche ('69) alloy S brakes on a GTV front. If so, what brake rotors did you use. Looks like they'd bolt right up, but are made for vented rotors?
Thoughts...
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post #2 of 10 (permalink) Old 07-19-2019, 10:43 AM
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post #3 of 10 (permalink) Old 07-19-2019, 11:00 AM Thread Starter
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No. It is '67 Stepnose that I used to vintage race. Planning to return it to the street. Kind of an "outlaw". And, I happen to have a set of these calipers which are really cool. Or, I may sell the the car.
I'm in Parker BTW.
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post #4 of 10 (permalink) Old 07-19-2019, 08:47 PM
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Quote:
Originally Posted by deversi View Post
Has anyone fitted early Porsche ('69) alloy S brakes on a GTV front. If so, what brake rotors did you use. Looks like they'd bolt right up, but are made for vented rotors?
Thoughts...
Correct, these early Porsche ('69) alloy S brakes where also fitted on the GTAm and the GTAJ using ventilated rotors
The alloy calipers are FIA approved I think, so may be eligible to run on a 1750 GTV.

The calipers came in two versions the light ones and the heavy duty ones as used on Porsche 930 Turbos.

For 13" wheels GTAm/GTAJ these adds partly alertly you to a fitting issue.
https://www.alfaholics.com/race-part...nt-brake-disc/
https://www.alfaholics.com/race-part...brake-caliper/

There are some fitting issues one is you need uprights to match the bolt holes of the alloy caliper. If you are going for a 13" wheel you also have another issue.

I have a few sets of these new vented rotors 108 bolt pattern who's external diameter has not been cut down.
These vented rotors where made as part of a special order so not found in the market.
These vented rotors are been used in historic racing categories here in Australia using 14" wheels.
If you are after a set of these new vented rotors not cut down I do have a spare set at $360US plus postage
Regards Steve
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post #5 of 10 (permalink) Old 07-20-2019, 10:36 AM Thread Starter
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Hi Steve,

Thanks for the helpful info on the calipers/rotors.
I'll get beck to you if I want to get the rotors.

Adam
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post #6 of 10 (permalink) Old 07-20-2019, 01:22 PM
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Pardon my ignorance of these calipers, but would they happen to have by chance a spacer in between the two caliper halves? I only say so because the Brembo calipers for GTV6 are for ventilated discs and have a spacer. By removing the spacer, they fit on the non-ventilated rotors of the same series car. Could this be the same situation?

By the way, BMW tii calipers are bolt on 4 piston ATE calipers for the 105/115 series.

Stefano
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iachella [at] gmail [dot] com
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post #7 of 10 (permalink) Old 07-20-2019, 06:34 PM Thread Starter
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Thanks Stefano,
My Calipers are solid aluminum block. But it makes me wonder about GTV6 vented rotors.
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post #8 of 10 (permalink) Old 07-20-2019, 09:23 PM
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You might be better off selling your 911S calipers and using Outlaw or Wilwood calipers. Alfa aluminum Brembo calipers are also popular. Although you'll have to do some minor mods, they will fit the "small" caliper mounting holes on your '67 GTV.

Opel vented brake rotors are said to work with the Brembo calipers on GTVs. Since the late Saturns used lots of Opel parts, I wonder if the Saturn rotors will wonk with Brembos on a Alfa?

Jim . . . '72 Super 1300, '70, 1750GTV, 2nd series,
'62, Lancia Flaminia Zagato3c, 2nd series

Last edited by 180OUT; 07-20-2019 at 09:30 PM.
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post #9 of 10 (permalink) Old 07-20-2019, 11:35 PM
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Quote:
Originally Posted by deversi View Post
Hi Steve,

Thanks for the helpful info on the calipers/rotors.
I'll get beck to you if I want to get the rotors.

Adam
Hi Adam,
It depends on which version of the 67 GT Veloce you have.
Version 2 and 3 had ATE calipers so you may be able to bolt up the alloy ATE calipers you have (check your car), when using a ventilated front rotor.
Version 1 of the 67 GT Veloce had Dunlop calipers so I don't think you can bolt up the alloy ATE calipers in their place.
Regards Steve

Last edited by Steve105; 07-21-2019 at 03:42 AM.
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post #10 of 10 (permalink) Old 07-31-2019, 06:36 AM
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The Brembo GTV6 will fit (3" bolt spacing / earlier spindles). there is some minor interference that a grinder will fix. they'll run on stock disk's if you remove the spacer.
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