Crankcase Evacuation Pump Plumbing into Lifter Valley
#3128055
03/10/23 10:25 AM
03/10/23 10:25 AM
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Posts: 3,048 Richmond, Tx. (Houston)
GTSDave
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I am considering plumbing my GZ motorsports vacuum pump into the valley tray instead of the valve covers. My main concern is how much oil vapor will be present. Will there be too much and cause issues with filling up the catch can, or will there be too little and oil starve the pump.
I am using an old Barton cross ram with end plates welded in to eliminate the valley pan. The engine is a 10.4" deck 426" Hemi built to turn north of 8500rpm. I am using Barton rockers and the Barton valve covers to match them. I know piping to the front of the valve covers is preferred. Going directly to the front of the intake plate will keep me from having to hack up these valve covers, and it will give me a -10 fitting right on the front of the engine that I could put a bore scope through to check out the lifters and valley tray.
What do you think?
-Dave
PLEASE Pray for our brothers and sisters in harms way. If you are the owner of a GTS us at the GTS Registry www.gtsregistry.com
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Re: Crankcase Evacuation Pump Plumbing into Lifter Valley
[Re: INTMD8]
#3128061
03/10/23 10:32 AM
03/10/23 10:32 AM
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Joined: May 2019
Posts: 712 Lake Villa Il
INTMD8
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super stock
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Not sure what kind of look you are going for but I bought an oil cap standoff, cut it down and welded it to the valve cover (from underneath). Put baffle back in place under it and welded an A/N fitting to the side. Works perfect.
Last edited by INTMD8; 03/10/23 10:34 AM.
69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700
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Re: Crankcase Evacuation Pump Plumbing into Lifter Valley
[Re: INTMD8]
#3128068
03/10/23 10:45 AM
03/10/23 10:45 AM
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GTSDave
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Not sure what kind of look you are going for but I bought an oil cap standoff, cut it down and welded it to the valve cover (from underneath). Put baffle back in place under it and welded an A/N fitting to the side.
Works perfect.
That looks very good. Super clean install. I will have to remember that for my street cars. This one is race only for my 68 Barracuda, and with the motor plate, clear view oil filter system, vacuum pump ect.. I am looking more at function than show car good looks. -Dave
PLEASE Pray for our brothers and sisters in harms way. If you are the owner of a GTS us at the GTS Registry www.gtsregistry.com
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Re: Crankcase Evacuation Pump Plumbing into Lifter Valley
[Re: AndyF]
#3128088
03/10/23 11:52 AM
03/10/23 11:52 AM
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I tried it in the valley on my Hemi even using a Moroso vacuum pump fitting. It still filled my over flow tank on the first dyno pull. Had to move the fitting into the valve cover.
1963 Belvedere 440 Max Wedge Tribute 1970 Charger R/T S.E. 440 Six Pack 1970 Challenger R/T, 528 Hemi 1970 Charger 500 S.E. 440 4 BBL 1970 Plymouth Road Runner 383 1974 Chrysler New Yorker 440 1996 2500 RAM 488 V-10 4X4 2004 3500 Dually Cummins 4x4 2012 Challenger R/T Classic.
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Re: Crankcase Evacuation Pump Plumbing into Lifter Valley
[Re: AndyF]
#3128217
03/10/23 05:56 PM
03/10/23 05:56 PM
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polyspheric
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I agree with AndyF, you need a labyrinth intake inside the valley, there are smog fittings with internal baffles that will save lots of work
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Re: Crankcase Evacuation Pump Plumbing into Lifter Valley
[Re: jwb123]
#3128244
03/10/23 07:50 PM
03/10/23 07:50 PM
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dvw
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Mine pulls from here. 4-5 oz after 25 -30 passes with a GZ pump. No baffle. I tried the fuel pump block off plate earlier. Since it's a Jessel with no timing chain in the cover. It filled the resivour the 1st time I started it in the garage in about 10 minutes of run time. Doug
Last edited by dvw; 03/10/23 07:51 PM.
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Re: Crankcase Evacuation Pump Plumbing into Lifter Valley
[Re: GTSDave]
#3128256
03/10/23 08:48 PM
03/10/23 08:48 PM
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Thanks for all the input folks,
I suspected that it may cause problems in the valley but it never hurts to ask. I had already talked it over with a friend and he had the same concern. We thought about ways to mitigate the oil draw but without knowing how much oil we would be dealing with, I figured I would throw it out there to see if any of you had tried it.
I run NSS/FX with it but have always run a wedge in the past with header evac to each valve cover.
I will go ahead and put a bung in the valve cover. The Barton valve covers are drilled for breathers, but they are towards the back so I will block those off and weld in a bung up front.
-Dave
PLEASE Pray for our brothers and sisters in harms way. If you are the owner of a GTS us at the GTS Registry www.gtsregistry.com
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Re: Crankcase Evacuation Pump Plumbing into Lifter Valley
[Re: dvw]
#3128257
03/10/23 08:49 PM
03/10/23 08:49 PM
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GTSDave
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Doug, Do you have any mock up pics of your GZ pump brackets? It looks like yours sits much lower than mine does. -Dave Mine pulls from here. 4-5 oz after 25 -30 passes with a GZ pump. No baffle. I tried the fuel pump block off plate earlier. Since it's a Jessel with no timing chain in the cover. It filled the resivour the 1st time I started it in the garage in about 10 minutes of run time. Doug
PLEASE Pray for our brothers and sisters in harms way. If you are the owner of a GTS us at the GTS Registry www.gtsregistry.com
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Re: Crankcase Evacuation Pump Plumbing into Lifter Valley
[Re: GTSDave]
#3128273
03/10/23 10:30 PM
03/10/23 10:30 PM
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dvw
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Doug, Do you have any mock up pics of your GZ pump brackets? It looks like yours sits much lower than mine does. -Dave Mine pulls from here. 4-5 oz after 25 -30 passes with a GZ pump. No baffle. I tried the fuel pump block off plate earlier. Since it's a Jessel with no timing chain in the cover. It filled the resivour the 1st time I started it in the garage in about 10 minutes of run time. Doug Hope this helps. Doug
Last edited by dvw; 03/10/23 10:30 PM.
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Re: Crankcase Evacuation Pump Plumbing into Lifter Valley
[Re: rickraw]
#3128303
03/11/23 12:30 AM
03/11/23 12:30 AM
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Posts: 3,048 Richmond, Tx. (Houston)
GTSDave
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I plan on it, The problem is there is very little room with the rocker gear inside these covers. Looks like my weekend plans have been decided! -Dave You should add a baffle under the hole. Splashed oil will get pulled out.
PLEASE Pray for our brothers and sisters in harms way. If you are the owner of a GTS us at the GTS Registry www.gtsregistry.com
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