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Vacuum pump problem #2483063
04/15/18 01:43 PM
04/15/18 01:43 PM
Joined: Sep 2006
Posts: 616
TP Exit 7, NJ, USA
DANA60 Offline OP
mopar
DANA60  Offline OP
mopar

Joined: Sep 2006
Posts: 616
TP Exit 7, NJ, USA
Vacuum Pump problem.

I run a Morroso evac pump. I have the valve cover baffled as well as one can on a BB. On my one motor (451), pushrod oiled, I pick up very little oil in the catch can (a couple tb spoons). In my other motor (512), shaft fed, I pick up aprox 6 OZ of oil every run. B-1 heads on both. I run a pressure valve at apprx 15-20 lbs. Is there a way to control this better? Is there a better way to baffle these valve covers?

Last edited by DANA60; 04/15/18 01:45 PM. Reason: added info
Re: Vacuum pump problem [Re: DANA60] #2483073
04/15/18 02:01 PM
04/15/18 02:01 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
MR_P_BODY  Offline
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Posts: 52,972
Romeo MI
Whats in there now for baffles.. is it one on
each valve cover.. pic would be great
wave

Re: Vacuum pump problem [Re: DANA60] #2483075
04/15/18 02:08 PM
04/15/18 02:08 PM
Joined: Sep 2006
Posts: 616
TP Exit 7, NJ, USA
DANA60 Offline OP
mopar
DANA60  Offline OP
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TP Exit 7, NJ, USA
I'll send you a pic tomorrow, but it's a simple metal sheet arched over the hole.

Re: Vacuum pump problem [Re: DANA60] #2483090
04/15/18 02:51 PM
04/15/18 02:51 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
It sounds like you need to restrict the oiling to the rockers on the shaft mounted motor shruggy work
I have a Victor headed motor with shaft rockers and a Gee Zee vacuum pump that only pulls 5.0 inches at RPM and it gets mostly condensation in it with the baffle under the pickup and bypass fittings around 8 inches long with multiple 3/8 holes drill in it.
My next motor will have a Moroso 4 vane vauum pump with Jesel paired shaft rocker system that pushrod and spray bar oiling, hopefully I can figure out a system to help pull air only out of the motor with minimum oil luck


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Vacuum pump problem [Re: DANA60] #2483092
04/15/18 02:54 PM
04/15/18 02:54 PM
Joined: Mar 2006
Posts: 9,791
MI, usa
dvw Offline
master
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MI, usa
Where is your connection located at? Though my heads are -1, they have no baffle. Maybe 6 oz in 25 passes.
Doug

E21.jpg
Re: Vacuum pump problem [Re: DANA60] #2483095
04/15/18 02:57 PM
04/15/18 02:57 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
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Posts: 52,972
Romeo MI
Sounds like the stock baffle.. not very good..
2 vents on the covers lowers the speed of the
air(you would like slow moving air so the oil
doent get up in the tube.. slow air is good)
wave

Re: Vacuum pump problem [Re: DANA60] #2483220
04/15/18 07:07 PM
04/15/18 07:07 PM
Joined: Jan 2012
Posts: 35
Mi USA
D
Dyno Donnie Offline
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Mi USA
Make sure no vacuum leaks. Six ounces of oil is huge. my moroso 3 vane on my BB sucked that much oil for months until I found my front crank seal ripped.
replaced seal no more oil in puke take.

Re: Vacuum pump problem [Re: Dyno Donnie] #2483233
04/15/18 07:40 PM
04/15/18 07:40 PM
Joined: Sep 2006
Posts: 616
TP Exit 7, NJ, USA
DANA60 Offline OP
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DANA60  Offline OP
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TP Exit 7, NJ, USA
This is the second motor built with those rockers, same as a year ago with different bottom end

Re: Vacuum pump problem [Re: MR_P_BODY] #2483235
04/15/18 07:42 PM
04/15/18 07:42 PM
Joined: Sep 2006
Posts: 616
TP Exit 7, NJ, USA
DANA60 Offline OP
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TP Exit 7, NJ, USA
Do you have a picture of a baffle you use?

Re: Vacuum pump problem [Re: DANA60] #2483414
04/16/18 01:11 AM
04/16/18 01:11 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
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Posts: 52,972
Romeo MI
No pic.. just in the engine but the last one
was basically a baffle inside a baffle(like
2 Cs put together.. one inside the other and
welded in.. also it makes a difference where
they are mounted.. I like to put them over the
wide rocker hold downs
wave

Re: Vacuum pump problem [Re: DANA60] #2483493
04/16/18 09:58 AM
04/16/18 09:58 AM
Joined: Mar 2018
Posts: 104
New Jersey
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Alan Prusiensky Offline
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New Jersey
Make sure the dash 12 bung is facing forward in the car and high as you can on the valve cover

Re: Vacuum pump problem [Re: DANA60] #2483579
04/16/18 01:29 PM
04/16/18 01:29 PM
Joined: Jan 2003
Posts: 19,304
Las Vegas
Al_Alguire Offline
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Las Vegas
First as pointed out make sure you do not have an air leak somewhere. If air can get it you will pull a lot of oil. On a B1 deal there are on a lot of deals WAY to much oil in the heads due to poor drainback. As for placement I have found in the center of the valve cover works best and I prefer the Star baffle on the inside. Another solution that worked well in our dragster with B1's was using the Moroso baffled locking breather at the pickup for the vaccum pump. It gets it high off the cover. We draw next to no oil with that set up. Its not particularly sexy but it seems to do the job.



"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: Vacuum pump problem [Re: DANA60] #2483739
04/16/18 05:41 PM
04/16/18 05:41 PM
Joined: Jan 2004
Posts: 4,540
Motor City
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6PKRTSE Offline
master
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Posts: 4,540
Motor City
I used the Moroso 22635 Positive Seal Vented fitting in my valve covers with no baffles. Hardly sucked any oil what so ever with 11 dyno hits.


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
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2012 Challenger R/T Classic.
Re: Vacuum pump problem [Re: dvw] #2483851
04/16/18 09:20 PM
04/16/18 09:20 PM
Joined: Jan 2003
Posts: 402
Dillsburg, PA
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mrsmallblock Offline
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Dillsburg, PA
Dvw... What is between your valve cover and pump on the fenderwell? Is that your pressure regulator?

Howard
Mrsmallblock

Re: Vacuum pump problem [Re: DANA60] #2484081
04/17/18 10:09 AM
04/17/18 10:09 AM
Joined: Oct 2004
Posts: 3,097
back in Georgia
dthemi Offline
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back in Georgia
A cast burn down breather has a Z baffle inside and can be bolted on top of the valve cover. I've yet to find anything as effective at this job as them.
Goodvibes, and rbs has them and they come with the base gasket, and the outlet is threaded for an oring AN. They look a bit out of place on anything but a hemi, but work like magic.

http://www.rbssuperchargers.com/Products/Burn_Down_Breather_Set_Polished_Thread_In_Hose--2600-0008




Re: Vacuum pump problem [Re: mrsmallblock] #2484207
04/17/18 01:33 PM
04/17/18 01:33 PM
Joined: Mar 2006
Posts: 9,791
MI, usa
dvw Offline
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Originally Posted By mrsmallblock
Dvw... What is between your valve cover and pump on the fenderwell? Is that your pressure regulator?

Howard
Mrsmallblock

Yes it's a regulator. The entire set up is from GZ
Doug

Re: Vacuum pump problem [Re: DANA60] #2484292
04/17/18 05:19 PM
04/17/18 05:19 PM
Joined: Feb 2008
Posts: 711
Central TEXAS!!!!
sr4440 Offline
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Central TEXAS!!!!
In order for oil to flow into the vacuum pump there has to be either air or piston blowby. If it doesn’t have either then there is no way for the oil to “move” into the pump. I use an electric vacuum pump and a blowby meter to check every engine before we start it on the dyno.

I can tell you that stock style BBM rear seal leaks air bad under a vacuum. The front does also but not as much. My 512 B-1, it had 6 inches at idle and 12 during a pull with lots of oil pouring into the vacuum pump. (a dyno pull takes longer then I am under power at the track). Knowing I had air going by the rear seal, I changed it out to a double lip design, went to 11 inches at idle and 17 during the pull and NO oil. (the engine was not unbolted from the dyno)

I would suggest finding a way to pull a vacuum on the engine without it running and using smoke or your hearing to find the air leaks.

One other thing, I don’t run a baffle inside my valve covers.

Joe


Without Data, you’re just another guy with an opinion.
Re: Vacuum pump problem [Re: sr4440] #2484544
04/18/18 11:01 AM
04/18/18 11:01 AM
Joined: Mar 2006
Posts: 9,791
MI, usa
dvw Offline
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MI, usa
[quote=sr4440]

I can tell you that stock style BBM rear seal leaks air bad under a vacuum. The front does also but not as much. My 512 B-1, it had 6 inches at idle and 12 during a pull with lots of oil pouring into the vacuum pump. (a dyno pull takes longer then I am under power at the track). Knowing I had air going by the rear seal, I changed it out to a double lip design, went to 11 inches at idle and 17 during the pull and NO oil.
Joe
[/quote}
Joe do you have a part number for this seal. Darren, AL do yo run your rear main seal installed backwards? If so does it seep at all?
Doug

Last edited by dvw; 04/18/18 02:10 PM.
Re: Vacuum pump problem [Re: dvw] #2484676
04/18/18 03:57 PM
04/18/18 03:57 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Originally Posted By dvw
[quote=sr4440]

I can tell you that stock style BBM rear seal leaks air bad under a vacuum. The front does also but not as much. My 512 B-1, it had 6 inches at idle and 12 during a pull with lots of oil pouring into the vacuum pump. (a dyno pull takes longer then I am under power at the track). Knowing I had air going by the rear seal, I changed it out to a double lip design, went to 11 inches at idle and 17 during the pull and NO oil.
Joe
[/quote}
Joe do you have a part number for this seal. Darren, AL do yo run your rear main seal installed backwards? If so does it seep at all?
Doug

I would like to know about both also help grin


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Vacuum pump problem [Re: DANA60] #2484840
04/18/18 10:06 PM
04/18/18 10:06 PM
Joined: Feb 2008
Posts: 711
Central TEXAS!!!!
sr4440 Offline
super stock
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Joined: Feb 2008
Posts: 711
Central TEXAS!!!!
It's the high $ double lip seal from fastfish. My cheap ass thought if i put a new stock seal in it would fix the issue, it didn't.

http://www.fastfishautoparts.com/Performance-Engine-Seals.html

Joe


Without Data, you’re just another guy with an opinion.
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