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Author Topic:   master cylinders
6WRACN
Dirt Newbie

Total posts: 2
posted January 18, 2005 09:58 PM  
does a 7/8" master cylinder put out more brake pressure than a 1" master cylinder or is it the other way? basically, would you want the 7/8" on the rear for more stopping power? i really cant remember and a friend of mine was wondering. thanks in advance.

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted January 19, 2005 12:05 AM  
The smaller bore master cylinder will put out more pressure whereas the larger bore will put out more fluid.

If my memory serves me right I think I have 7/8" on the front and rear brakes and a 3/4" for my clutch.

Hope that helps.

Dman
Dirt Freak

Total posts: 270
posted January 19, 2005 08:30 AM  
Basic master cyl. configuration for a dirt mod with the same size calipers front and rear is: 1 in. front,7/8 in. rear,3/4 in. for clutch. The smaller bore will give you more pressure and less volume.If a mod is set up correctly you will need more rear brake than front in almost all conditions.The opposite is used for asphalt.If you have brake pressure gauges you should start with about 200 pounds more rear than front and adjust from there using the balance bar adjustment until the car feels good on entry braking.More front if the car is loose and the opposite if the car is tight.Braking balance is a very important tuning adjustment.Don't overlook it.Good Luck!

dbradley
Dirt Freak

Total posts: 251
posted January 19, 2005 08:39 AM  
What type of balance bar assembly do you all prefer
D

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted January 19, 2005 03:57 PM  
I used a regular cheapo bar type for years and this year I bought Wilwood's knob type. I love it, it has detents that allow you to easily make 1/4 turn adjustments. Very user friendly!

Dman
Dirt Freak

Total posts: 270
posted January 19, 2005 04:04 PM  
I have tried all the adjusters with the little speedometer cables and they bind and twist up if the balance bar is a little tight.The best is the Howe hand crank type.It uses a heavier flex cable.You can get them from Performance Bodies at a better price than the Tilton or Wilwood unit.They are pretty bullet proof.

LATE MODEL 9W
Dirt Full Roller

Total posts: 66
posted January 19, 2005 04:27 PM  
6wracn, if you called the guy with the same name as you he could of answered that question!

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