Converting MK2 to Tandem Master Cylidner

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GinettaG15
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Converting MK2 to Tandem Master Cylidner

#1 Post by GinettaG15 » Sun May 07, 2023 8:34 am

my car is a RHD MK2 with its original single -circuit brake system.

what main parts would i need to convert to a dual circuit. can is just source / install the Tandem-Master used in export versions of the MK2?

iani
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Re: Converting MK2 to Tandem Master Cylidner

#2 Post by iani » Sun May 07, 2023 6:02 pm

I used a Stag M/cyl, need to replace the 4-way union on the inner wing with a 3-way and run a rear brake line down to splice into the rear circuit. I did replace all components with Stag parts however, including the Servo.
1966 2000 Mk1 Estate - Cherry Red (2.5 PI conversion)
1968 Mk1 GT6 - Wedgewood, 2.5l Triple DCOEs
1973 2.5 PI Saloon - Honeysuckle

GinettaG15
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Re: Converting MK2 to Tandem Master Cylidner

#3 Post by GinettaG15 » Sun May 07, 2023 7:37 pm

ok....the question is: is it "just" a direct swap of the cylinders, without using the stag´s servo?

iani
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Re: Converting MK2 to Tandem Master Cylidner

#4 Post by iani » Sun May 07, 2023 7:55 pm

GinettaG15 wrote:
Sun May 07, 2023 7:37 pm
ok....the question is: is it "just" a direct swap of the cylinders, without using the stag´s servo?
You will have to change the 4-way union to a 3-way union and connect the rear circuit from the m/cyl to the rear circuit.
1966 2000 Mk1 Estate - Cherry Red (2.5 PI conversion)
1968 Mk1 GT6 - Wedgewood, 2.5l Triple DCOEs
1973 2.5 PI Saloon - Honeysuckle

GinettaG15
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Re: Converting MK2 to Tandem Master Cylidner

#5 Post by GinettaG15 » Tue May 09, 2023 7:17 pm

iani wrote:
Sun May 07, 2023 7:55 pm
GinettaG15 wrote:
Sun May 07, 2023 7:37 pm
ok....the question is: is it "just" a direct swap of the cylinders, without using the stag´s servo?
You will have to change the 4-way union to a 3-way union and connect the rear circuit from the m/cyl to the rear circuit.
thats obviously clear... :wink:

so i just buy the tandem, change some piping and thats it? brake balance won´t be negatively effected (over-braking at rear?)

GinettaG15
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Re: Converting MK2 to Tandem Master Cylidner

#6 Post by GinettaG15 » Sun May 21, 2023 7:26 pm

https://rimmerbros.com/Item--i-GRID008720

spring and plunger on servo side are not present at the single-cylinder.
7/8" bore diamter looks 2mm bigger than the single one?

Image

Mikengard
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Re: Converting MK2 to Tandem Master Cylidner

#7 Post by Mikengard » Sun Jun 25, 2023 7:35 pm

Did you get an answer to this question? Can you use the stock, single system servo, or do you need to install the dual system servo?

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