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Brake servo and master cylinder upgrade
Upgrading the Servo and Master Cylinder. Applicable for both Mk1 and Mk2 Scirocco.
Parts Sources
Master Cylinder:
Not sure where mine came from, it was bought as new from a show, its got a Passat part number, but it’s unclear which model or year (Its dubious origin came back to bite me later though as it wasn’t an easy fit). You can get them from late mk2 (16v) and mk3 golfs, though these often have 2 outlets instead of 4.
Servo:
This came from a scrapped mk2 16v golf, it also came with master cylinder (2 oulet only) and an epansion tank that I needed.
Preparation.
This is an increadibly messy job. You’ll need tons of newspaper & rags for soaking up spilt brake fluid, and also a means of storing and disposing of about 1 litre of old brake fluid. If you’re cracking the fuel system on a K-jet engine for access, be prepared for all the mess that involves too (i.e. Rags and newspaper for petrol spills).
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Engine codes and conversion options
I’ll refer to each engine by it’s first 2 letters of the engine number.
Stock Engines for Mk1
some of these may appear in an early Mk2:
I think there’s some 1.1 and 1.3l engines that were also fitted, but if you’ve got one, keep it cos it’s a bit of a European novelty 
JB – 1.5L 8v Carb Approx 70BHP
Found in mk1′s and mk2′s til ’82
Simple upgrade to 1.8 EX Carb engine
FR – 1.6L 8v Carb Approx 85BHP
Found on GLS Model
Simple upgrade to 1.8 EX Carb engine
EG 1.6i, 8v Approx 110BHP, All Mk1 injection models and Mk2 until 1983
This engine can compete happily with the 1.8 injection engines thus a KR would be a starting point for an upgrade as the fueling system is similar.
Stock Engines for Mk2
EW – 1.6l 8v carb approx 75BHp
Easy upgrade is to an EX as very little needs to be changed.
EX – 1.8l 8v carb approx 90BHp
Easy upgrade would be a KR on side-draught carbs. Fuel injection requires new pump and fuel lines.
DX – 1.8l 8v K-jet injection approx 110BHp
Easy upgrade would be a KR running K-jet injection.
KR – 1.8l 16v K-jet Injection approx 135BHp – Import (LHD) only
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