- Joined
- Sep 27, 2016
- Messages
- 213
- Reaction score
- 94
- Points
- 28
- Vehicle Year
- 2000 Supercab
- Make / Model
- Stepside
- Engine Type
- V8
- Engine Size
- 5.0L GT40
- Transmission
- Manual
- 2WD / 4WD
- 2WD
People commonly use the 7" GEO Metro booster swap as it is very small but it's lacking in assisting long hard stops, I was looking for something a bit bigger.
After looking through 100's of options I came across a Subaru WRX booster which is also a Dual Diaphragm, but only half as thick.
This is enough booster and master for the 4-piston Brembos that come OEM on the Subaru's, so it will be miles better than the GEO would be.
GEO Metro booster is a 7" Single Diaphragm
Ranger booster is a 8.8" Dual Diaphragm
Subaru booster is a 8.6" Dual Diaphragm
The Ranger and Subaru master cylinder both have a 1" Bore
Although they have essentially the same size diaphragm the housing's overall diameter is much smaller, as well as the obvious depth which fit perfectly leaving plenty of room surrounding it.
After looking through 100's of options I came across a Subaru WRX booster which is also a Dual Diaphragm, but only half as thick.
This is enough booster and master for the 4-piston Brembos that come OEM on the Subaru's, so it will be miles better than the GEO would be.
GEO Metro booster is a 7" Single Diaphragm
Ranger booster is a 8.8" Dual Diaphragm
Subaru booster is a 8.6" Dual Diaphragm
The Ranger and Subaru master cylinder both have a 1" Bore
Although they have essentially the same size diaphragm the housing's overall diameter is much smaller, as well as the obvious depth which fit perfectly leaving plenty of room surrounding it.