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Old 09-22-2013, 10:52 AM   #28
Keith Seymore
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Join Date: May 2009
Location: Motor City
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Re: First hand experience with changing to the NBS master cylinder WOW!

Originally Posted by t_graham11 View Post
I did some searching and the new cylinder is 1.8" and the original is 1.6" so you'll have to bore out the .2" on hydro boosted trucks. Some guys have said they did it them selfs but I'm going to buy a new hydro boost and get the machine ship to bore it out for me.
I'm not sure I'm following you -

Are you talking about boring out the center bore of the master cylinder (affecting line pressure)? or are you talking about the outside diameter of the hub that fits into the brake booster?

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