The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - First hand experience with changing to the NBS master cylinder WOW!

t_graham11 · 09-21-2013, 09:26 PM

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 ha a leaky slave cylinder and my pedal went dead changed it and then just yesterday I had zero pedal again and was standing on the brakes when I pulled into my house, luckily I just rubbed the wheel against the retaining wall rather than through my carport. My brake fluid is really dirty, I heard that was because the MC seals were rotten. I'm pretty excited to have a firm pedal again
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09-21-2013, 09:26 PM	#25
t_graham11 Registered User Join Date: Apr 2009 Location: Ladysmith BC Posts: 80	Re: First hand experience with changing to the NBS master cylinder WOW! 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 ha a leaky slave cylinder and my pedal went dead changed it and then just yesterday I had zero pedal again and was standing on the brakes when I pulled into my house, luckily I just rubbed the wheel against the retaining wall rather than through my carport. My brake fluid is really dirty, I heard that was because the MC seals were rotten. I'm pretty excited to have a firm pedal again Posted via Mobile Device