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The Green 931 -my first transaxle ever (resurrection thread)
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BTRacing  



Joined: 31 May 2014
Posts: 171
Location: Nortbrook,IL

PostPosted: Thu Dec 05, 2019 1:54 pm    Post subject: Reply with quote

Why not to use early offset 944 Turbo knuckle, rotor and caliper ?
I am using late offset front and rear 944 Turbo parts for my GTR build Car is wide body so late offset actually helps with correct wheel spacing.
I like 944 T calipers for easy race pad selection. I know that it is same with Boxster calipers but off the shelf parts are just easier to get ad bolt on directly.
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1977 924 Martini
1979 931 GTR Le Mans replica to be
2017 GMC Canyon Denali daily driver
1974 Moto Guzzi Cafe Racer
2002 Formula Fastech
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kondzi  



Joined: 02 Jul 2018
Posts: 89
Location: MZ/Poland/EU

PostPosted: Thu Dec 05, 2019 8:44 pm    Post subject: Reply with quote

It's much easier to find Boxster calliper honestly. At least here.
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Konrad
'89 951 US
'88 Mustang 5.0 LX Convertible (factory specs)
'84 911 Carrera 3.2 RoW (factory specs)
'81 931 RoW (TBD)
'81 Ford Capri 2.8i (factory specs)
'79 Ford Capri 2.9 (heavily modded)
'74 Ford Capri 1.3 (factory specs)
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Fasteddie313  



Joined: 29 Sep 2013
Posts: 1993
Location: MI

PostPosted: Fri Dec 06, 2019 7:21 am    Post subject: Reply with quote

kondzi wrote:


And I need to upgrade the master cylinder obviously. The 944 one should be fine.


931 944 951 masters are all the same other than their failsafe mechanisms, no change in displacement or bias between them..
https://rennlist.com/forums/944-turbo-and-turbo-s-forum/886294-rear-calipers.html
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kondzi  



Joined: 02 Jul 2018
Posts: 89
Location: MZ/Poland/EU

PostPosted: Fri Dec 06, 2019 7:39 am    Post subject: Reply with quote

Fasteddie313 wrote:
kondzi wrote:


And I need to upgrade the master cylinder obviously. The 944 one should be fine.


931 944 951 masters are all the same other than their failsafe mechanisms, no change in displacement or bias between them..
https://rennlist.com/forums/944-turbo-and-turbo-s-forum/886294-rear-calipers.html

Good stuff, thanks. Did you keep the X setup, or changed for fronts/rears?
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Konrad
'89 951 US
'88 Mustang 5.0 LX Convertible (factory specs)
'84 911 Carrera 3.2 RoW (factory specs)
'81 931 RoW (TBD)
'81 Ford Capri 2.8i (factory specs)
'79 Ford Capri 2.9 (heavily modded)
'74 Ford Capri 1.3 (factory specs)
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Fasteddie313  



Joined: 29 Sep 2013
Posts: 1993
Location: MI

PostPosted: Fri Dec 06, 2019 8:32 am    Post subject: Reply with quote

Still X but plan to change..
Trick brakes fell down the priority list..
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kondzi  



Joined: 02 Jul 2018
Posts: 89
Location: MZ/Poland/EU

PostPosted: Sun Dec 29, 2019 8:14 am    Post subject: Reply with quote

Managed to find 951 rear callipers. Less expensive than Boxter + Brackets, but need to do a full rebuild on them.

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Konrad
'89 951 US
'88 Mustang 5.0 LX Convertible (factory specs)
'84 911 Carrera 3.2 RoW (factory specs)
'81 931 RoW (TBD)
'81 Ford Capri 2.8i (factory specs)
'79 Ford Capri 2.9 (heavily modded)
'74 Ford Capri 1.3 (factory specs)
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MOTANUL  



Joined: 19 Nov 2018
Posts: 120
Location: ROMANIA BUCHAREST

PostPosted: Mon Dec 30, 2019 1:01 am    Post subject: Reply with quote

944 S2 have diferent master and also ABS system.

I wanted to put on my car but the system was too different and involved too many modifications and adaptations.

Nice looking rear callipers
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1980 Porsche 924 Turbo (931) diamond silver metallic/helios blue metallic
sold Porsche 924 NA 1979
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peterld  



Joined: 10 Dec 2006
Posts: 773
Location: Noosa Heads QLD Australia

PostPosted: Mon Dec 30, 2019 9:36 pm    Post subject: Reply with quote

I use 968 (same as 944T/944S2) front and rear calipers on stock 931 piping/master and boost system. No issues....great brakes, and this is a track car.
Rear calipers bolt straight on over existing disc. Front calipers were slightly modified to suit bolt pattern, over 911 C2 discs, longer studs and 6mm spacer.

It's been on the car for over 20 years.
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kondzi  



Joined: 02 Jul 2018
Posts: 89
Location: MZ/Poland/EU

PostPosted: Tue Dec 31, 2019 10:26 pm    Post subject: Reply with quote

My setup will be 996 Turbo front callipers and rotors, 944 Turbo rear callipers and early 944 Turbo rear rotors. I plan to change the master cylinder from 23.8 to 25.4 as fitted in the 911 RS. It's damn cold during winter, so probably more progress in few months
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Konrad
'89 951 US
'88 Mustang 5.0 LX Convertible (factory specs)
'84 911 Carrera 3.2 RoW (factory specs)
'81 931 RoW (TBD)
'81 Ford Capri 2.8i (factory specs)
'79 Ford Capri 2.9 (heavily modded)
'74 Ford Capri 1.3 (factory specs)
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View user's profile Send private message
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