| [GMCnet] Fwd: SUPER Brake Booster Aux Vacuum Pump [message #256532] |
Fri, 25 July 2014 17:04 |
emerystora
Messages: 4442
Registered: January 2004
Karma:
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Senior Member |
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That should have read grab ahold of the VACUUM SWITCH and rotate it.
Emery Stora
Begin forwarded message:
> From: Emery Stora
> Subject: Re: [GMCnet] SUPER Brake Booster Aux Vacuum Pump
> Date: July 25, 2014 4:02:41 PM MDT
> To: gmclist@temp.gmcnet.org
>
> I purchased the pump from David Lenzi at the Montgomery, TX GMCMI convention.
> He shipped me the machined adapter that he makes that plugs into the booster and which has a threaded port for the vacuum meter and a port on the front for a check valve for the hose that leads to the pump. In the bottom of the adapter is a threaded port that holds the vacuum switch. He sells a very accurate vacuum switch that is easy to adjust. Just grab ahold of the pump and rotate it to raise or lower the vacuum.
>
> I found that the pump would give me 20" of vacuum even at 5200 feet above sea level. The engine only gives about 14" at that elevation. The higher vacuum will give better braking from the booster.
>
> I fashioned the brackets for the pump from two 6" angles purchased from Home Depot.
> You remove the four bolts that were designed to mount into rubber "feet" on the automobile. I bought 1" nylon spacers and metric bolts to hold the pump to the brackets and screwed the brackets to the firewall.
>
> Pictures are here:
>
> http://www.gmcmhphotos.com/photos/g6643-vacuum-pump-for-brakes-lenzi.html
>
> Emery Stora
> 77 Kingsley
> Frederick, CO
>
> On Jul 22, 2014, at 11:49 AM, Rob Mueller wrote:
>
>> Bob,
>>
>> Standby, I have parts on order that will allow me to put together a comprehensive installation document which will cover:
>>
>> 1) How to make a mounting bracket
>> 2) Where to get a vacuum switch
>> 3) Where to locate the pump
>> 4) How to plumb it into the system
>> 5) How to wire it
>>
>> Regards,
>> Rob M.
>> The Pedantic Mechanic
>> USAussie - Downunder
>> USA '75 Avion - Double Trouble TZE365V100426
>> AUS '75 Avion - The Blue Streak TZE365V100428
>>
>>
>> -----Original Message-----
>> From: Bob de Kruyff
>>
>> How do people plan on turning on the pump? Vacuum switch or activated by brake application?
>> --
>> Bob
>>
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>
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