Master cylinder question

[Coleydog]

Pulled the snap ring from bore, saw its 1" just like the factory cylinder on a 70 Duster. New aluminum two bolt like factory, has the groove for rod lock. Bought at Carlilse in a box of parts, mc adapter, coil overs, a-arms, heim joints, proportioning valve and 10 lb residual valve, many misc parts, all for $100, all new. I'm using Strange disc on front, drums on back.
Thanks for replys
Mike

[GTX JOHN]

Try it.....It will probably be fine.

It is a little subjective as different folks like
a different petal feel.

[FireSale]

I guess I'm an odd bird. When I was driving my Mustang to the track it had power brakes and I liked the ease of staging and always hitting the first turn off. When I put it on a trailer and went to manual brakes I never adapted to the feel. Now I'm back to power with a Strange master, a vacuum pump and reservoir tank. Much more comfortable with the way the car responds.


Note: I'm 71 and don't have the leg for it any more...

[L78 Nova]

With all other aspects the same...
a smaller MC bore will require more stroke with less effort to reach equal braking pressure (providing the volume is still adequate).


a larger bore MC will require less stroke with more effort to reach equal braking pressure (larger is required when caliper volumes are greater)


Larger- multi piston style calipers "generally" have more piston area so they will provide more brake application force at lower pressures. ie. they work in conjunction with the larger bore MC.

[Eman]

Originally Posted by Coleydog

Pulled the snap ring from bore, saw its 1" just like the factory cylinder on a 70 Duster. New aluminum two bolt like factory, has the groove for rod lock. Bought at Carlilse in a box of parts, mc adapter, coil overs, a-arms, heim joints, proportioning valve and 10 lb residual valve, many misc parts, all for $100, all new. I'm using Strange disc on front, drums on back.
Thanks for replys
Mike

Your call but I don't think you'll need a proportioning valve or a residual check valve, every car is different. I've got GM Metric calipers on the frt. and drum on the back with an aluminum Mopar MC 1 1/16 bore with no ck valve and I have an adjustable prop valve but it's wide open.
What works for me footbraking is the largest bore rear wheel cyls and secondary shoes in both positions for more friction surface area.

[Coleydog]

Originally Posted by Eman

Your call but I don't think you'll need a proportioning valve or a residual check valve, every car is different. I've got GM Metric calipers on the frt. and drum on the back with an aluminum Mopar MC 1 1/16 bore with no ck valve and I have an adjustable prop valve but it's wide open.
What works for me footbraking is the largest bore rear wheel cyls and secondary shoes in both positions for more friction surface area.

Not looking to use the proportion valve. My first Duster had the stock Kelsey disc up front with a drum brake master (like the one I measured) and that car was the best stopping bar none. Hope to get the same feel again. Of course I was 29 then, might not have the leg now lol.

[GallopinGhost]

I just bought a new strange MC. Their recommendation is with 4 wheel disks, use a 1.125 bore and with 2 wheel disk, 2 wheel drum to use a 1.032 bore. I can say, without even bleeding the lines the pedal feels good, better than the mopar aluminum one I had on

Originally Posted by Coleydog

Not looking to use the proportion valve. My first Duster had the stock Kelsey disc up front with a drum brake master (like the one I measured) and that car was the best stopping bar none. Hope to get the same feel again. Of course I was 29 then, might not have the leg now lol.

[Larry Hill]

Dont forget to look at break pedal ratio when changing from power to manual.

[Eman]

Originally Posted by GallopinGhost

I just bought a new strange MC. Their recommendation is with 4 wheel disks, use a 1.125 bore and with 2 wheel disk, 2 wheel drum to use a 1.032 bore. I can say, without even bleeding the lines the pedal feels good, better than the mopar aluminum one I had on

What differences are there between the Strange MC and the Mopar aluminum one? Isn't the Strange basically an aluminum Mopar MC?

[GallopinGhost]

Not sure what the differences are. the mopar one might have had an issue, Although one thing I did different going from one to the other is that I now have the rear brakes plumbed to the rear port on the MC. I read that the rear port provides more fluid flow, and I'm trying to make sure I have good holding power on the rear when staging. we'll see.

Originally Posted by Eman

What differences are there between the Strange MC and the Mopar aluminum one? Isn't the Strange basically an aluminum Mopar MC?