67 Master Cylinder
#1
67 Master Cylinder
I've been looking for a new master cylinder for my 1967 Delta 88 Custom, but have run into a bit of a snag.
MasterCylinder.png
What I've found out is that it's a Delco Moraine Booster. However it looks like it has a master cylinder meant for manual brakes.
The part number for what it looks like I have:
18001122, turns up Dorman M71277 (for manual brakes)
The part number that the parts book says I should have:
5458521, turns up Dorman M66705 (for power brakes)
My brakes have never felt right (bought the car last year), I always assumed it was because the master cylinder was on it's way out (it definitely is now, the pedal went to the floor a couple times last summer). But could it be that it's been the wrong MC all along?
I guess my question is should I buy what I've had (about $30) or what the parts book says I should have (about $80)?
Thanks, Erik
MasterCylinder.png
What I've found out is that it's a Delco Moraine Booster. However it looks like it has a master cylinder meant for manual brakes.
The part number for what it looks like I have:
18001122, turns up Dorman M71277 (for manual brakes)
The part number that the parts book says I should have:
5458521, turns up Dorman M66705 (for power brakes)
My brakes have never felt right (bought the car last year), I always assumed it was because the master cylinder was on it's way out (it definitely is now, the pedal went to the floor a couple times last summer). But could it be that it's been the wrong MC all along?
I guess my question is should I buy what I've had (about $30) or what the parts book says I should have (about $80)?
Thanks, Erik
#2
Its possible the car was originally a manual brake car and a DPO (dumb previous owner) added the power booster wihtour changing the master cyl, or maybe replced the original cyl at some point in the car's life. I think also, the brake pedal can be mounted in two locations (pins where it hangs from under the dash) depending on whether its a manual brake or auto car, and that could affect the pedal feel if its in the wrong spot. Certainly the pedal going to the floor is not a good thing, but it is possible you have a leaky wheel cylinder? How is the fluid level in the reservoir?
#4
I was thinking the "DPO" might have put the wrong MC on it, however I came across this:
Fenco NM1489
It looks like what I have on there and says it's for power brakes. This is starting to get a little confusing.
Fenco NM1489
It looks like what I have on there and says it's for power brakes. This is starting to get a little confusing.
#5
I've been looking for a new master cylinder for my 1967 Delta 88 Custom, but have run into a bit of a snag.
What I've found out is that it's a Delco Moraine Booster. However it looks like it has a master cylinder meant for manual brakes.
The part number for what it looks like I have:
18001122, turns up Dorman M71277 (for manual brakes)
The part number that the parts book says I should have:
5458521, turns up Dorman M66705 (for power brakes)
What I've found out is that it's a Delco Moraine Booster. However it looks like it has a master cylinder meant for manual brakes.
The part number for what it looks like I have:
18001122, turns up Dorman M71277 (for manual brakes)
The part number that the parts book says I should have:
5458521, turns up Dorman M66705 (for power brakes)
By the way, the hard lines from the M/C to the distribution block on your car show it to be a factory power brake car. The rust on those lines show them to be original.
#6
Thanks for the info everyone. So basically anything that matches the part number 5458521 will work? I don't really mind what the casing looks like if it works how it's supposed to.
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