+2 Dual circuit master options
Posted: Fri Sep 09, 2016 7:16 pm
Hi,
While I have the engine out of my plus I was thinking, despite my almost brand new master cylinder, I?d switch over to dual circuit brakes while I have easy access to the brake lines. I know this is a well-covered topic on the forums and I think I?ve read most of the relevant threads without identifying the perfect drop in master for the +2. My understanding after reading all the threads is the options are:
Factory Fit Girling:
+ Factory Unit
+ Right bore 11/16
- Unavailable
- $$$$ if you can find one
Datsun 1200:
(probably best choice for an Elan)
+ Right bore 11/16
+ Cheap ~$70
+ Easily available in USA and easy to get rebuild kits
- Outlets at bottom on master and I believe will not fit in +2 peddle box, or be very difficult to connect the lines too
UPDATE: The bottom outlets will foul the pedal box unless significantly modified. SO this is not a bolt in replacement.
Triumph Spitfire (76-80):
+ Right bore 0.7"
+ Cheap ~$70
+ Easily available and easy to get rebuild kits
- Angled Reservoir, needs replacing
UPDATE: Is only marginally shorter than the space in the engine bay but fits if you remove pedal box to fit. On RHD car the rear connection is fouled by rear corner of the engine bay so it can't be used. Should work fine on LHD.
Caterham Master:
+ Right bore 0.7"
+ Should be bolt in
- Expensive 250GBP + postage
- Harder to get hold of and get rebuild kits in USA
Lotus Marques
(http://lotusmarques.com/parts/datasheet ... e-cylinder)
+ Right bore 11/16
+ Bolt in
- Likely to be expensive
- Harder to get hold of and get rebuild kits in USA
I?ve also seen reference to SAAB, Volvo and Morgan dual masters but not been able to identify specific car/master cylinder. My conclusion so far is that the Spitfire is probably the best route in the US, specifically the one for the 76-80 models and replacement reservoir will probably be easier to locate/make.
My question are:
1) Have I missed any relevant Master Cylinders?
2) Has anyone fitted the Datsun 1200 to a +2 peddle box?
3) Any one any leads on a correct replacement reservoir for the Spitfire master?
Thanks,
Mark
While I have the engine out of my plus I was thinking, despite my almost brand new master cylinder, I?d switch over to dual circuit brakes while I have easy access to the brake lines. I know this is a well-covered topic on the forums and I think I?ve read most of the relevant threads without identifying the perfect drop in master for the +2. My understanding after reading all the threads is the options are:
Factory Fit Girling:
+ Factory Unit
+ Right bore 11/16
- Unavailable
- $$$$ if you can find one
Datsun 1200:
(probably best choice for an Elan)
+ Right bore 11/16
+ Cheap ~$70
+ Easily available in USA and easy to get rebuild kits
- Outlets at bottom on master and I believe will not fit in +2 peddle box, or be very difficult to connect the lines too
UPDATE: The bottom outlets will foul the pedal box unless significantly modified. SO this is not a bolt in replacement.
Triumph Spitfire (76-80):
+ Right bore 0.7"
+ Cheap ~$70
+ Easily available and easy to get rebuild kits
- Angled Reservoir, needs replacing
UPDATE: Is only marginally shorter than the space in the engine bay but fits if you remove pedal box to fit. On RHD car the rear connection is fouled by rear corner of the engine bay so it can't be used. Should work fine on LHD.
Caterham Master:
+ Right bore 0.7"
+ Should be bolt in
- Expensive 250GBP + postage
- Harder to get hold of and get rebuild kits in USA
Lotus Marques
(http://lotusmarques.com/parts/datasheet ... e-cylinder)
+ Right bore 11/16
+ Bolt in
- Likely to be expensive
- Harder to get hold of and get rebuild kits in USA
I?ve also seen reference to SAAB, Volvo and Morgan dual masters but not been able to identify specific car/master cylinder. My conclusion so far is that the Spitfire is probably the best route in the US, specifically the one for the 76-80 models and replacement reservoir will probably be easier to locate/make.
My question are:
1) Have I missed any relevant Master Cylinders?
2) Has anyone fitted the Datsun 1200 to a +2 peddle box?
3) Any one any leads on a correct replacement reservoir for the Spitfire master?
Thanks,
Mark