Master cylinder question

Coleydog · 11-29-2018, 11:28 AM

I have a 15/16 and a 1-1/16 bore MC, whitch one will give the softest pedal effort? I had heard this before but can't remember.
Mike

kansas stocker · 11-29-2018, 11:31 AM

15/16

Coleydog · 11-29-2018, 12:02 PM

Thank you

FireSale · 11-29-2018, 03:00 PM

You need to match the piston area of your calipers to the bore of your MC to get the best stopping power. Smaller bore give higher pressure if the pedal ratio is right.

Joe's Racing has a good article on Master cylinder math. Link below.

https://www.joesracing.com/rt-4172-m...nder-math.html

GTX JOHN · 12-03-2018, 04:37 AM

15/16 on all our stockers........

Most of our cars are 4 Wheel Aftermarket Discs.

Coleydog · 12-04-2018, 10:36 AM

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

11-29-2018, 11:28 AM	#1
Coleydog Senior Member Join Date: Jul 2014 Posts: 569 Likes: 36 Liked 53 Times in 38 Posts	Master cylinder question I have a 15/16 and a 1-1/16 bore MC, whitch one will give the softest pedal effort? I had heard this before but can't remember. Mike

11-29-2018, 11:31 AM	#2
kansas stocker Member Join Date: Oct 2002 Location: kansas Posts: 235 Likes: 494 Liked 249 Times in 48 Posts	Re: Master cylinder question 15/16

11-29-2018, 12:02 PM	#3
Coleydog Senior Member Join Date: Jul 2014 Posts: 569 Likes: 36 Liked 53 Times in 38 Posts	Re: Master cylinder question Thank you

11-29-2018, 03:00 PM	#4
FireSale VIP Member Join Date: Feb 2014 Location: Lakewood Washington Posts: 1,407 Likes: 29 Liked 237 Times in 126 Posts	Re: Master cylinder question You need to match the piston area of your calipers to the bore of your MC to get the best stopping power. Smaller bore give higher pressure if the pedal ratio is right. Joe's Racing has a good article on Master cylinder math. Link below. https://www.joesracing.com/rt-4172-m...nder-math.html __________________ Dale Shearon 68 Mustang 6394

12-03-2018, 04:37 AM	#5
GTX JOHN VIP Member Join Date: Jun 2009 Location: Boulder City, Nevada 89005 Posts: 2,728 Likes: 2,783 Liked 2,462 Times in 694 Posts	Re: Master cylinder question 15/16 on all our stockers........ Most of our cars are 4 Wheel Aftermarket Discs. __________________ John Irving 741 Stock 741 Super Stock Last edited by GTX JOHN; 12-03-2018 at 04:40 AM.

12-04-2018, 10:36 AM	#6
Coleydog Senior Member Join Date: Jul 2014 Posts: 569 Likes: 36 Liked 53 Times in 38 Posts	Re: Master cylinder question 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