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testing used brake boosters 200 1986

posted by  darmstrong on  Tue Jan 25 05:19 CST 2005
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last visit: Sat Sep 13 12:21 CST 2014
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Very funny.

It's nice to know someone is getting benefit from my musings, although I suppose that regardless, it's helpful even for my own understanding to write it down; tends to make you think it through more thoroughly.

I don't suppose that you have a booster and/or check valve for sale, do you? My current plan is to pull one off my parts car tonight, but that's not a lot of fun in a field at -10 to -15C! Number9 wreckers want $50 for the booster/master cylinder combination; maybe I will see if they'll separate the two, but it has no check valve. The dealer wants $55 for just the check valve! (and I can't wait to get a $10 one delivered from FCP Groton). Just for laughs, the dealer wants $900 for the complete booster! (FCP Groton comes in at about $200(US), and UAP/NAPA is competitive at $250 Cdn).

My test now will be to connect a vacuum gauge in between the check valve and the booster when I first start the car in the cold. I'll see how fast vacuum comes up, and then pull the line off the manifold every 30 seconds or so, to see how soon it holds. Then I can repeat by connecting to the other booster while it's sitting on the strut tower, and compare.

I guess it's starting to look like I'd be better off to just install another booster and hope for the best. Unfortunately, I need to get all this done by Wednesday night, since Thursday morning appears to be the last time for a while that the temps are going to -20C.


--
David Armstrong - '86 240(350k km?), '93 940T(270k km), '89 240(parts source for others) near






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