Master cylinder help
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Bring back old skool Ford
Joined: Feb 2010
Posts: 137
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From: Northern Ireland
Master cylinder help
Can anyone tell me if a MK4 Escort master cylinder will fit a MK3 servo? Think i need to upgrade from the 22.2mm to the 23.8 or 25.4 if i can.
TIA
TIA
Thread Starter
Bring back old skool Ford
Joined: Feb 2010
Posts: 137
Likes: 3
From: Northern Ireland
They more or less look identical from what I can see but knowing my luck they wont work together! I don't mind buying a new MK4 servo as I'm sure it can only benefit but I cant find one anywhere
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Pre and post ‘83 are different due to the distance where the master bolts to the servo.
post ‘83 are all compatible with the exception of abs master cylinders. These can be adapted by blanking off ports if I remember but I cannot confirm how the bias will work on these abs ones
For reference, there is also 3 different rear cylinder sizes on the mk3 and a standardised middle one on the mk4. Altering these along with the different master cylinders can make a rear difference in how the brakes operate.
I run a 24mm master and 17.8mm rear cylinders on my mk4 Cabriolet with the larger xr/rs drums and 260mm front discs and have nice, balanced brakes.
post ‘83 are all compatible with the exception of abs master cylinders. These can be adapted by blanking off ports if I remember but I cannot confirm how the bias will work on these abs ones
For reference, there is also 3 different rear cylinder sizes on the mk3 and a standardised middle one on the mk4. Altering these along with the different master cylinders can make a rear difference in how the brakes operate.
I run a 24mm master and 17.8mm rear cylinders on my mk4 Cabriolet with the larger xr/rs drums and 260mm front discs and have nice, balanced brakes.
Last edited by iansoutham; May 20, 2018 at 07:46 AM.
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