Manual Disc/Disc Master Cylinder
#1
Manual Disc/Disc Master Cylinder
Without doing a bunch of research, I though I would ask you guys what master cylinder I should install. I am running manual front and rear disc (Granada/Versaille) right now. Because of my vacuum, a booster is not an option. I do not think my current master cylinder is the best choice for this application as it is hard to press the pedal and takes a great deal of ummmph to get any real stopping power. I plan to move on to Wilwood discs front and back this winter, but regardless of that, I will still be running a manual disc/disc setup. What master cylinder do you suggest?
#2
i have no idea if there's a "good one" to choose from. but couldn't you use a "vacuum reservoir", or an electric vacuum pump. i don't think it's too hard to do. I think it's what you really want. do you want power brakes or do you prefer no power assist
#4
I would love to run a power booster, but I am not excited about running a vacuum pump.
Edit:
I know the diameter on the rod varies on master cylinders which are better for power or for manual (1", 7/8", 1 1/4", etc)...I just don't know which ones work better for what application and what affect it has.
Edit:
I know the diameter on the rod varies on master cylinders which are better for power or for manual (1", 7/8", 1 1/4", etc)...I just don't know which ones work better for what application and what affect it has.
Last edited by urban_cowboy; 10-27-2010 at 03:00 PM.
#5
I use this one with my Granada front and Versailles rear. It works very well.
http://www.cjponyparts.com/dual-bowl...5-1966/p/DBC4/
http://www.cjponyparts.com/dual-bowl...5-1966/p/DBC4/
#6
After reading a little, I have found that the small the master cylinder bore makes the pedal effort easier. Too small of a bore will cause the pedal to hit the floor or at least have a long travel. Too big and the pedal effort is too firm.
So, my question is what bore diameter works best for manual brakes? What would give me the easiest pedal effort but not a huge pedal travel? Also, should I go with a single or dual reservoir?
So, my question is what bore diameter works best for manual brakes? What would give me the easiest pedal effort but not a huge pedal travel? Also, should I go with a single or dual reservoir?
#7
I was originally going nonpower 4wh. disc and had sourced an '84-'85 Mustang SVO MC. They could be ordered with 4wh. nonpower disc. Only inconvenience was that the ports face the motor so you have to bend them around to meet the dist/prop valve. It's aluminum but looks just like a cast iron stock shape, I didn't want the newer ones with the plastic reservoir.
I cross referenced the Raybestos number MC39402 and found one at a local parts store reman. for a good price and it came with the pushrod and the ports were still standard inch.
http://www.raybestos.com/wps/portal/...brandName=BDBL
The bore is either 13/16 or 7/8", can't remember exaclty but it was <1" which is what I was looking for. The PB booster for the same car was 1 1/8" bore.
Don't know is this is what you're looking for but it'll give you another option to look at. After all was said and done I decided to go PB and rear drum after all.
You may also do some reading here: http://www.mustangsteve.com/, I believe he sells 4wh. disc kits with nonpwr option but uses the newer metric MC with plastic reservoir.
Jon
I cross referenced the Raybestos number MC39402 and found one at a local parts store reman. for a good price and it came with the pushrod and the ports were still standard inch.
http://www.raybestos.com/wps/portal/...brandName=BDBL
The bore is either 13/16 or 7/8", can't remember exaclty but it was <1" which is what I was looking for. The PB booster for the same car was 1 1/8" bore.
Don't know is this is what you're looking for but it'll give you another option to look at. After all was said and done I decided to go PB and rear drum after all.
You may also do some reading here: http://www.mustangsteve.com/, I believe he sells 4wh. disc kits with nonpwr option but uses the newer metric MC with plastic reservoir.
Jon
#8
My other option would be to go with a hydroboost system which works off the power steering pump instead of vacuum, but until I upgrade my steering to a Borgeson box and Saginaw pump, that really is not an option.
Odd that NPD only has 1" bores. Any idea who cares 7/8" or so?
Odd that NPD only has 1" bores. Any idea who cares 7/8" or so?
#10
I use drum/drum OEM 1" 67 MC w/ my front disc 4 piston KH.
Removed residual pressure valve from disc MC port.
Pedal effort is similar to OEM manual drum/drum.
7/8" would improve pedal effort a little.
Larger caliper piston area also reduces pedal effort.
Removed residual pressure valve from disc MC port.
Pedal effort is similar to OEM manual drum/drum.
7/8" would improve pedal effort a little.
Larger caliper piston area also reduces pedal effort.