DeTomaso Mailing List: May 2000, Message #151

From:Peter the German

Mercedes uses one,since they operate Door locks,Climate Control,and a lot of
other stuff with Vacuum.
Of course its not cheap,I believe its close to 400 bucks.

Peter


----- Original Message -----
From: "Richard Barkley" <rbarkley@earthlink.net>
To: "Multiple recipients of list" <detomaso@realbig.com>
Sent: Wednesday, May 03, 2000 8:19 PM
Subject: Electric Vacuum Booster Pump


> John Parsons mentioned yesterday in his SUPER writeup of his 'Vegas
> track time (and in 'Vegas) that he had lost vacuum (and thus his brakes)
> almost causing a crash on the course. I talked with someone during the
> concourse about this and he mentioned that some diesels use an electric
> pump that pulls something like 29" of vac - it's always there and gives
> about twice (?) the boost.
>
> In the HR magazine I got today there's an add on page 66 for Master
> Power Brakes (888-251-2353) for their AC2723K electric vacuum pump.
> Specs are 7x6x3 inches, 5 lbs, 20" vacuum, and 3 amps. It sounds a
> little bigger than the one described to me, but still small enough.
>
> So, anyone ever used such a thing? Know of any deisel (truck?) units?
> Would something like a diesel VW use one? Is this a solution for those
> complaining that they can't press hard enough on their brakes - I seem
> to remember a recent Profiles (or NL) article where someone went to
> great lengths to change the MC diameters to get more leverage. Seems
> like this would be a better way to go (assuming the booster can handle
it).
>
> BTW, I suggested to John that maybe there was a leak in his booster, its
> check valve, or lines as there should be plenty of vacuum for at least a
> couple of brake stabs even with no vacuum at the engine when the brakes
> are applied.
>
> Richard Barkley
>