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Re: [GMCnet] JC-4 Vacuum Pump?? [message #323895 is a reply to message #323893]

Fri, 15 September 2017 06:10

Ken Henderson

Messages: 8726
Registered: March 2004
Location: Americus, GA

Karma:

Senior Member

Probably 25" Hg. Since the booster holds the highest vacuum it's seen
since the last brake application, it's conceivable that it could be as high
as 30" Hg. after a long off-throttle deceleration.

Ken H.

On Fri, Sep 15, 2017 at 1:32 AM, John Phillips
wrote:

> Just for comparison what is nominal engine vacuum in a braking situation?
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach

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[Message index]

		JC-4 Vacuum Pump?? By: rjw on Wed, 13 September 2017 21:08
		Re: [GMCnet] JC-4 Vacuum Pump?? By: k2gkk on Wed, 13 September 2017 21:36
		Re: [GMCnet] JC-4 Vacuum Pump?? By: Jerry Wheeler on Wed, 13 September 2017 22:24
		Re: [GMCnet] JC-4 Vacuum Pump?? By: rjw on Thu, 14 September 2017 06:11
		Re: [GMCnet] JC-4 Vacuum Pump?? By: USAussie on Thu, 14 September 2017 07:18
		Re: JC-4 Vacuum Pump?? By: Larry on Thu, 14 September 2017 07:33
		Re: JC-4 Vacuum Pump?? By: Hal StClair on Thu, 14 September 2017 11:31
		Re: JC-4 Vacuum Pump?? By: larry.whisler on Thu, 14 September 2017 16:30
		Re: [GMCnet] JC-4 Vacuum Pump?? By: Ken Henderson on Thu, 14 September 2017 17:55
		Re: [GMCnet] JC-4 Vacuum Pump?? By: johnd01 on Fri, 15 September 2017 00:32
		Re: [GMCnet] JC-4 Vacuum Pump?? By: Ken Henderson on Fri, 15 September 2017 06:10
		Re: [GMCnet] JC-4 Vacuum Pump?? By: GatsbysCruise on Sun, 23 May 2021 12:18
		Re: JC-4 Vacuum Pump?? By: jhbridges on Thu, 14 September 2017 17:12
		Re: JC-4 Vacuum Pump?? By: RF_Burns on Sun, 23 May 2021 13:45
		Re: JC-4 Vacuum Pump?? By: rjw on Sun, 23 May 2021 14:43
		Re: JC-4 Vacuum Pump?? By: RF_Burns on Sun, 23 May 2021 21:01
		Re: JC-4 Vacuum Pump?? By: rjw on Mon, 24 May 2021 06:05

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