Hey folks- I'm hoping to get some help here as I want to get this project wrapped up this week. I've got a '55 F100. I just converted the stock front end to disc brakes. In addition to the discs I'm upgrading the original master cylinder to a dual chamber non-power frame mounted master cylinder. I'm using the ECI brand adapter which calls for the use of a 68-70 Mustang big-block front disc, rear drum, non-power master cylinder. Everything is bolted up but now I need to plumb in the lines. The problem is both chambers on the master cylinder are exactly th esame size. I'm used to uneven sizes with the smaller portion being for the drums and the larger portion being for the discs. According to ECI it can make a difference which way it is hooked up. Anybody running a simillar setup or have any ideas? Thanks, Jay
Do a thread search, we've had a lot of discussion on this topic lately. I'm running the 1" vette cylinder with the res. closest to the pedal going to the rears. Not sure if you have the same set up though.
Alright, however it turns out according to a Mustang guy I talked to that Mustangs with disc brakes were only available with power brakes so if I've got a master for non-power brakes it must be one for four wheel drum brakes. When I ordered it I think the Napa website mislead me a little. IT gave me the same part result for a cars I looked up with a 4 wheel drum setup as for one with a front disc rear drum setup. I thought it would automatically rule out the all drum options....my bad.
the main diff's on power assist or non power assist are the piston rod hole depth and bore diameter, non power brake cylinders have a deeper hole for the actuator rod to fit into, on the bore diameter the smaller piston will let you apply more pressure with less effort at the cost of longer pedal travel Larry
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