Re: Crankcase Pressure/Evac System/Stage 6 Heads
[Re: 67_Satellite]
#3156126
07/02/23 08:12 AM
07/02/23 08:12 AM
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Joined: Dec 2005
Posts: 1,495 Shelby mi.
JAKE68
pro stock
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pro stock
Joined: Dec 2005
Posts: 1,495
Shelby mi.
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Are you using any type of sealer at the ends? I also would use the plates. Take off reseal put plates on and try again.
JAKES AUTOMOTIVE
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Re: Crankcase Pressure/Evac System/Stage 6 Heads
[Re: JAKE68]
#3156127
07/02/23 08:34 AM
07/02/23 08:34 AM
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Joined: Dec 2008
Posts: 742 Oak Harbor, WA
Wicked49670dart
super stock
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super stock
Joined: Dec 2008
Posts: 742
Oak Harbor, WA
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On my 383/496 motor with Stage VI heads, I use the pan evac from Moroso only. The diaphragm inside the breathers and check valve can get rusty and not work properly, you can put a vacuum gauge on the hose at the valve cover and check the amount of vacuum its actually pulling. I use the aluminum valley pan from Hughe's but have to trim to fit along with the front and rear support brackets, I do use Permatex Right stuff to seal all four contact area's, never had a leak making mid 9 seconds passes. I use a Edelbrock RB 440 intake with no spacers and that buys more room to use the aluminum valley pan.
Last edited by Wicked49670dart; 07/02/23 08:40 AM.
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Re: Crankcase Pressure/Evac System/Stage 6 Heads
[Re: Mopar.70]
#3156266
07/02/23 03:55 PM
07/02/23 03:55 PM
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Joined: Aug 2003
Posts: 43,176 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,176
Bend,OR USA
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Last edited by Cab_Burge; 08/05/23 09:03 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Crankcase Pressure/Evac System/Stage 6 Heads
[Re: JAKE68]
#3156439
07/03/23 09:27 AM
07/03/23 09:27 AM
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Joined: Jan 2003
Posts: 13,363 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,363
Marion, South Carolina [><]
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Are you using any type of sealer at the ends? I also would use the plates. Take off reseal put plates on and try again.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: Crankcase Pressure**Update Vacuum Pump**
[Re: Mopar.70]
#3163257
07/26/23 01:44 AM
07/26/23 01:44 AM
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Joined: Aug 2003
Posts: 43,176 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,176
Bend,OR USA
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Which GZ pump did you buy? The pump may or may not be able to pull the vacuum you want, that depends on how good you have your motor sealed up on the rings and seals and gaskets and how tight you can get the drive belt, been there learned that Good luck, do NOT put the vacuum fittings in the fuel pump block off plate You will fill the puke tank in one or two runs My motors ended up liking the fitting in the top of the cast aluminum valve covers with no breather caps on them, I ended up buying some of the cast polished aluminum valve covers from either Speedmaster or Pro Form from Summit Racing that had no holes in them and drill them with a large Unibit bit to fit the rubber grommets I needed when I was using a PCV only and ended up buying another pair and bought a screw on two piece fitting that I could use a AN hose from the pump to that fitting only and did not put any other holes in them, I would disconnect that fitting when I would change oil and use a small funnel to pour the oil into the motor through that fitting I didn't mount my pump on my front motor plate so I could tighten it or loosen it up Never again The most vacuum I could pull was right at 5.5 inches no matter what I did other than remounting the pump better, that was with the GZ enhanced pump, their best one I have bought two Moroso vacuum pumps since then, one three vane and one four vane, I'm hoping they both work better, I'll really focus on sealing the motors better and mounting the pumps so they can be adjusted to tighten the belts really tight Good luck on your deal
Last edited by Cab_Burge; 07/26/23 01:50 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Crankcase Pressure**Update Vacuum Pump**
[Re: Mopar.70]
#3163272
07/26/23 07:54 AM
07/26/23 07:54 AM
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Joined: Mar 2006
Posts: 9,836 MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,836
MI, usa
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My GZ pump pulls about 19-12hg. It has a fitting in the valley plate for 1/4" pushlock to the vacuum gauge. It could be in the valve cover as well. My fitting is in the front wall of the valve cover close to the intake side. pulls about 3-4oz of oil in 20-25 passes. Doug
Last edited by dvw; 07/26/23 07:57 AM.
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Re: Crankcase Pressure**Update Vacuum Pump**
[Re: Mopar.70]
#3163313
07/26/23 10:26 AM
07/26/23 10:26 AM
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Joined: Aug 2003
Posts: 43,176 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,176
Bend,OR USA
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I had a baffle welded under my fittings on my cast aluminum valve covers that broke the welds off after a while, I don't know exactly when it did that, I found it when I went to check the valve lash and remove it and saw no difference in performance or oil in the catch can after removing it My message I don't think you really need one
Last edited by Cab_Burge; 07/26/23 10:26 AM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Crankcase Pressure**Update Vacuum Pump**
[Re: Cab_Burge]
#3163461
07/26/23 05:58 PM
07/26/23 05:58 PM
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Joined: Jan 2004
Posts: 4,566 Motor City
6PKRTSE
master
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master
Joined: Jan 2004
Posts: 4,566
Motor City
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I run a Moroso Advanced 4 Vane vac pump. No issues with it. 17-19". Only adds to the over flow with only a couple of oz after many passes and hundreds of street miles. I still drain it after ever pass just to be sure.
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 Pressure**Update Vacuum Pump**
[Re: Mopar.70]
#3165717
08/05/23 10:45 AM
08/05/23 10:45 AM
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Joined: Mar 2003
Posts: 2,504 PA
moparacer
master
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master
Joined: Mar 2003
Posts: 2,504
PA
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Well, the pump worked better than it's supposed to. Factory set for 21, it pulled that and more and sucked the valley pan down. GZ said factory set for 21 it would never pull that much on my motor, guess I have it sealed up pretty good. This was on the initial run to test and set it. So, gotta take the manifold back off, try to figure out what I can do for a valley pan and re set it. Plan for the next time is to back off the regulator and sneak up on it. These stage 6 heads seem to limit me on what I can do for a valley pan. No racing this weekend. . . You should never start with it maxed out and work down. Always start low and work up. I can't believe they didn't tell you to do it that way. Too much vacuum, supposedly pulls oil from the wrist pins on some setups. I pull 10 on mine. Went to 15 seen no improvement in ET. Went back to 10 and left it there.
Last edited by moparacer; 08/05/23 10:46 AM.
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: Crankcase Pressure**Update Vacuum Pump**
[Re: Mopar.70]
#3165866
08/05/23 10:15 PM
08/05/23 10:15 PM
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Joined: Mar 2006
Posts: 9,836 MI, usa
dvw
master
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master
Joined: Mar 2006
Posts: 9,836
MI, usa
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Do you have any kind of baffle plate in the valve cover where the port is on the insdie? Or is it straight open into that area? Just open. No baffle. Doug
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