M/C bore size?

[sabre67]

71 Duster, manual brakes, disc front and rear, 7/8 bore yes or no ? thanks

 

[mvh]

Are you asking what it has? Or what would be best? OEM MC was either 15/16 for power disks, or 1-1/32 for manual disks.

 

[sabre67]

Are you asking what it has? Or what would be best? OEM MC was either 15/16 for power disks, or 1-1/32 for manual disks.

what would be best for this application,im leaning toward 7/8 thanks for any input disc front and rear and manual brake

 

[mvh]

7/8 should be good. Larger bore would have higher pedal pressure; the 1-1/32, for example, is a brute. The reason the power disks had a smaller bore than the manual was they had different mechanical leverage.

 

[sabre67]

7/8 should be good. Larger bore would have higher pedal pressure; the 1-1/32, for example, is a brute. The reason the power disks had a smaller bore than the manual was they had different mechanical leverage.

thanks for the reply

 

[AJ/FormS]

The 7/8 mc may not supply enough fluid volume for all types and sizes of front calipers.

I have it on the factory KH 4-piston stoppers WITH a booster, and it works just fine.It is very easy to modulate the pedal; I really like the feel.

 

[69_340_GTS]

7/8" will be O.K. unless you are running some huge race car calipers or something.

 

[dartfreak75]

So would 15/16 be to small for non power brakes?

 

[AJ/FormS]

15/16 is just right for factory brakes, is very modulate-able, and has a nice feel to it.I might have a little more travel than you are used to, but that is the trade-off for modulation control. I like it a lot
the feel is a very good match to a diaphragm clutch.

 

[dartfreak75]

15/16 is just right for factory brakes, is very modulate-able, and has a nice feel to it.I might have a little more travel than you are used to, but that is the trade-off for modulation control.
the feel is a very good match to a diaphragm clutch.

Ok thanks AJ I guess I will go ahead and order it. Going with the dorman m80266.