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PulseCode: (2014-02-02 02:27:48)

My master brake cylinder to my '87 daily driver needs rebuilt or replaced. I am leaking a reservoir full in two days time. My first inclination is to go with the OE rebuild kit avaialble on e-Bay for about $85 I think. But, then I read that if there is any corrosion in the MBC body that it should be entirely replaced and I won't know that until I pull it all loose. Are there any good brands available thru NAPA or Car Quest etc. that are reliable and a better value than shelling out around 200 clams for Nissan? This will be my first MBC rebuild but, I'm not too worried about that. Thanks in advance.

Augustus Maximus: (2014-02-02 09:18:27)

MBC manual boost controller. BMC brake master cylinder. I've had luck with used ones.

G-E: (2014-02-02 15:52:45)

Rebuilt is hit or miss like anything, sometimes they rebuild corroded cores too by honing them out a little… best thing to do is crack it open first and then decide, I'm guessing rebuilding would be fine

NissanEgg: (2014-02-02 16:21:52)

The Nissan rebuild kit is NOT $200. Open it up and decide. Rebuilding them is cake. Just make sure to have a few cans of brake clean and a pipe brush to clean out the bore to inspect for scoring/corrosion. Most of the time the lip seals on the pistons wear out and leak.

PulseCode: (2014-02-02 23:25:39)

Thanks. I'm going to get the Nissan rebuild kit for around $85.

Augustus- Thanks, I knew MBC looked funny as I was typing it.

PulseCode: (2014-02-14 19:45:34)

One more question. I looked in the FSM and in the Haynes and neither manual mentions how to remove the reservoir. Does it simply pry out? Thanks.

Z_Karma: (2014-02-14 20:15:16)

Yeah, it pops out.

I can't find it now but, i posted photos awhile ago of the rebuilt BMC i got from NAPA.

It was a oem Nissan core.

PulseCode: (2014-02-14 20:19:08)

Thank You. Yes, I just opened up the box from O Reilleys and it's an OEM Nissan core.

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