vaccum pump reading?
#2782564
06/07/20 09:51 PM
06/07/20 09:51 PM
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Joined: Jun 2004
Posts: 922
birdtracker
OP
super stock
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OP
super stock
Joined: Jun 2004
Posts: 922
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where do you tap in to get a vacuum reading from the crank case evacuation pump. First time vac pump user. Pictures would be appreciated.Thanks. Birdtracker
Last edited by birdtracker; 06/07/20 09:52 PM.
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Re: vaccum pump reading?
[Re: birdtracker]
#2782573
06/07/20 10:24 PM
06/07/20 10:24 PM
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Joined: Aug 2003
Posts: 43,007 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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I put both the vacuum pump fitting and bypass valve fittings holes installed in the front of passenger side valve cover I had a baffle welded in underneath both fittings also
Last edited by Cab_Burge; 06/07/20 10:25 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: vaccum pump reading?
[Re: Cab_Burge]
#2782601
06/08/20 01:58 AM
06/08/20 01:58 AM
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Joined: Oct 2006
Posts: 1,263 New York, USA
Chargerfan68
pro stock
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pro stock
Joined: Oct 2006
Posts: 1,263
New York, USA
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I’m ready to fire up my motor soon, and i put a fitting for a vac gauge in the rear of the indy valley plate on top. Since it’s pulling vacuum, i don’t believe a baffle is needed since oil and vapor is being drawn the opposite way.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: vaccum pump reading?
[Re: birdtracker]
#2782757
06/08/20 01:06 PM
06/08/20 01:06 PM
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Joined: Jan 2003
Posts: 19,304 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,304
Las Vegas
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Where do you have the pump inlet hose hooked up to? If it is in a valve cover don't hook the gauge port up to the same cover, it will not give you an accurate reading but will tell you how much vacuum that valve cover has Also if this is a racepak or other data logger DO NOT put the sensor directly on the engine. They do not like the vibration at all. AS for me we generally put it in the opposite valve cover from the pump inlet.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: vaccum pump reading?
[Re: OUTLAWSSAA]
#2782916
06/08/20 04:58 PM
06/08/20 04:58 PM
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Joined: Jun 2004
Posts: 922
birdtracker
OP
super stock
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OP
super stock
Joined: Jun 2004
Posts: 922
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that is very sanitary. First time vac pump user. Plan on using all AN fittings. Birdtracker
Last edited by birdtracker; 06/08/20 04:59 PM.
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Re: vaccum pump reading?
[Re: birdtracker]
#2783013
06/08/20 08:26 PM
06/08/20 08:26 PM
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Joined: Jan 2003
Posts: 19,304 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,304
Las Vegas
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We just use pushlock air line fittings. It weighs less and easy to connect and disconnect for maintenance Here is a pic of mine. Drivers side valve cover in the oil fill cap.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: vaccum pump reading?
[Re: Cab_Burge]
#2783031
06/08/20 09:36 PM
06/08/20 09:36 PM
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Joined: Oct 2006
Posts: 1,263 New York, USA
Chargerfan68
pro stock
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pro stock
Joined: Oct 2006
Posts: 1,263
New York, USA
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How is oil and vapor being drawn the other way? Especially under acceleration Cab, what i meant was that, as far as i can figure, ia baffle is not really needed since the crankcase is under vacuum and being pulled into the pump. So oil won’t be pushed up the fitting, like if the crankcase was under pressure and vents to any openings. This is what i surmised, but correct me if i’m wrong on my thinking, please.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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Re: vaccum pump reading?
[Re: Cab_Burge]
#2783134
06/09/20 10:49 AM
06/09/20 10:49 AM
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Joined: Mar 2003
Posts: 2,485 PA
moparacer
top fuel
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top fuel
Joined: Mar 2003
Posts: 2,485
PA
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I just tig welded an 1/8 inch pipe fitting on the top rear corner on my indy valve covers and run a plastic oil pressure line to my guage. Doesnt have to be anything extravagant. Just has to work.
67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174
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Re: vaccum pump reading?
[Re: Cab_Burge]
#2783261
06/09/20 02:58 PM
06/09/20 02:58 PM
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Joined: Oct 2006
Posts: 1,263 New York, USA
Chargerfan68
pro stock
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pro stock
Joined: Oct 2006
Posts: 1,263
New York, USA
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[quote=Cab_Burge]I found out the hard way that not using a baffle under the vacuum fitting on my new motor caused a lot more oil being sucked into the tank on every run, it would fill the tank up in less than 6 runs I swap the old valve covers onto the new motor and cure that problem Using the baffle under the fitting resulted in almost pure moisture with in the tank and very little oil I think the oil droplets being slung off of the rocker arms are being forced into the fitting and up the hose under suction and not being given a chance to drop back into the heads, the baffle stops that [/ I should have clarified, but i am talking about the fitting that leads only to the vacuum gauge to monitor crankcase vacuum. Not the fitting and baffle to leads to the pump itself. They are in 2 diff locations. The pump hose fitting has a bafgle and is mounted in front of valve cover. Btw, is there a better position for the baffle opening in that valve cover that you found is best? Right now, i have my opening pointing towards the header side. With the angle of the valve covers mounted on the heads, it is slanted downward away from the fitting opening. But, not sure if facing forward or center of engine is better? Thx
Last edited by Chargerfan68; 06/09/20 04:53 PM.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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