'93 Ford E350 - Master cylinder bore size?
Haven't posted here for a while, and I'm not sure anyone can help or not. I will check with some of the more mechanic oriented pages as well, but I think this is somewhat specific to my vehicle being...
Forum Discussion
Ryan,
I looked at our master cylinder and couldn't see if it had a diameter on it. According to RockAuto's lookup, it's 1-5/16" (shown in some places as 1.3125" same thing). But ours has HydroBoost, not Vacuum Boost, and so does the F53 Class A chassis.
You may find this article interesting. It discusses the relationships between MC diameter, caliper pressure, pedal effort, pedal travel.
RockAuto includes a listing of which vehicles a given part also fits. It showed some E350's, even a 150, and various years. The thing I didn't like was that the "will fit" lists were not the same, meaning that one of the MC's to replace our 2002 with 1-5/16" bore would fit more others than another MC from the same listing. There were also some notes about "with HydroBoost" and I don't believe HB came out till the E-SuperDuty (basically the E450 till Ford decided on how to badge their vehicles) in the late 1990's.
If you look up "Ford, 2002, E450, V10" you'll see where they're closing out a 1-5/16" MC for $30-something. If you want to try it... I think you'd get a higher pedal with less travel but more pedal effort than you'd like.
Article above shows a company called Vanco that offers HydroBoost retrofit kits. Instead of Engine Vacuum, it works off an existing Power Steering Pump.
I'm into a big project right now so I gotta bolt. Call, PM, email me if I can help.
I looked at our master cylinder and couldn't see if it had a diameter on it. According to RockAuto's lookup, it's 1-5/16" (shown in some places as 1.3125" same thing). But ours has HydroBoost, not Vacuum Boost, and so does the F53 Class A chassis.
You may find this article interesting. It discusses the relationships between MC diameter, caliper pressure, pedal effort, pedal travel.
RockAuto includes a listing of which vehicles a given part also fits. It showed some E350's, even a 150, and various years. The thing I didn't like was that the "will fit" lists were not the same, meaning that one of the MC's to replace our 2002 with 1-5/16" bore would fit more others than another MC from the same listing. There were also some notes about "with HydroBoost" and I don't believe HB came out till the E-SuperDuty (basically the E450 till Ford decided on how to badge their vehicles) in the late 1990's.
If you look up "Ford, 2002, E450, V10" you'll see where they're closing out a 1-5/16" MC for $30-something. If you want to try it... I think you'd get a higher pedal with less travel but more pedal effort than you'd like.
Article above shows a company called Vanco that offers HydroBoost retrofit kits. Instead of Engine Vacuum, it works off an existing Power Steering Pump.
I'm into a big project right now so I gotta bolt. Call, PM, email me if I can help.
