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Will a PCV help condensation in Alum. Blk.?
#1444217
05/29/13 02:28 PM
05/29/13 02:28 PM
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Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
Hemi Allstate
OP
master
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OP
master
Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
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I have driven my car a few miles on the street now and noticed a lot of condensation inside engine and in the oil. I have read that this is common to all aluminum engines, which mine is.
Will a PCV help with this?
I know that short running time is bad, and the engine does run 180*F plus. If anything a little hotter.
Thanks,
Mark
1996 Ram 1500 Sport
1968 road runner
1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: Hemi Allstate]
#1444218
05/29/13 02:37 PM
05/29/13 02:37 PM
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Joined: Aug 2003
Posts: 43,237
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,237
Bend,OR USA
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I ran two PCV and two breather caps in my aluminum headed iron block to reduce condensation in it  Heat rises, water evaporates and condensates when cooled on whatever is the highest(valve covers ) point in the motor 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: Cab_Burge]
#1444219
05/29/13 02:39 PM
05/29/13 02:39 PM
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Joined: Jul 2004
Posts: 19,318
State of confusion
Thumperdart
I Live Here
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I Live Here
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Posts: 19,318
State of confusion
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Did you get a hold of Kevin Cab?
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: Thumperdart]
#1444220
05/29/13 03:40 PM
05/29/13 03:40 PM
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Joined: Jan 2003
Posts: 19,377
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,377
Las Vegas
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Are you getting the engine hot at all? I am going to assume you are running a cast aluminum valve cover, this will exaggerate the issue. Although I PCV or something to vent crankcase pressure is a very good idea.
"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: Will a PCV help condensation in Alum. Blk.?
[Re: Hemi Allstate]
#1444222
05/29/13 04:58 PM
05/29/13 04:58 PM
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Joined: Jan 2003
Posts: 13,376
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,376
Marion, South Carolina [><]
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I never had an issue like this when I just had a couple of breathers on the valve covers.  I have a vacuum pump now though.
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: Will a PCV help condensation in Alum. Blk.?
[Re: an8sec70cuda]
#1444223
05/29/13 05:46 PM
05/29/13 05:46 PM
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Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
MRMOPAR622
top fuel
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top fuel
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
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My vacuum pump always pulls a few ounces of water out of the aluminum block on start up,and when you pop the valve covers are any other part on the engine no condensation at all.Not sure if you can run a vacuum pump on the street but if possible that would be your best bet.
"To Be The Man'You Have Got To Beat The Man"
"T/D and Pro-Bracket Racer"
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: Hemi Allstate]
#1444226
05/29/13 07:55 PM
05/29/13 07:55 PM
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Joined: Jan 2003
Posts: 6,266
Renton Washington
Triple Threat
master
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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Quote:
Quote:
My vacuum pump always pulls a few ounces of water out of the aluminum block on start up,and when you pop the valve covers are any other part on the engine no condensation at all.Not sure if you can run a vacuum pump on the street but if possible that would be your best bet.
I don't know either, but I may look into it.
Thanks,
Mark
You can, certain companies like GZ have no problems with it. http://www.gzmotorsports.com/
Not sure about Aerospace, Star, Moroso or the other brands out there.
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: Hemi Allstate]
#1444227
05/29/13 08:00 PM
05/29/13 08:00 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
I never had an issue like this when I just had a couple of breathers on the valve covers.
I have a vacuum pump now though.
Chip,
What temp do you run your engine? Do you avoid short run times ?
Thanks,
Mark
If you can get the engine up to 215 for a bit before
you shut it down it will boil the condensation out...
you have to get it up to 212 at least.. then as it
sits the temp will climb a little which helps it...
you can attach the PCV hose to the base of the carb or
the intake(same thing)
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: MR_P_BODY]
#1444228
05/29/13 08:56 PM
05/29/13 08:56 PM
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Joined: Nov 2005
Posts: 15,119
85086
moparpollack
Lil Herman
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Lil Herman
Joined: Nov 2005
Posts: 15,119
85086
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How are all the aluminum block and head cars not suffering from this? I know hemi valve covers are tall and have a lot of open space that would cause the condensation but, would the material that are made of really cause this problem?
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: moparpollack]
#1444229
05/29/13 09:09 PM
05/29/13 09:09 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
How are all the aluminum block and head cars not suffering from this? I know hemi valve covers are tall and have a lot of open space that would cause the condensation but, would the material that are made of really cause this problem?
They did suffer from it... thats why they went up to
the 195 stat in the cooling system... before they did
that they were getting condensation and sludge in
the engine
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: Mulehead]
#1444231
05/29/13 10:10 PM
05/29/13 10:10 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Vacuum Pump on mine
Doesnt look like a street engine to me... most guys
I know dont run a vac pump on the street... not saying
you cant but it might draw a lot of oil
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: MR_P_BODY]
#1444232
05/29/13 11:04 PM
05/29/13 11:04 PM
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Joined: Nov 2006
Posts: 635
mississippi
bentwheel43
mopar
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mopar
Joined: Nov 2006
Posts: 635
mississippi
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I don't run mine on the street but it will help cool it down after running when the motor is not running and it helps keep the water out the oil.I got a fitting from Star mech.for the valve cover.
Last edited by bentwheel43; 05/29/13 11:24 PM.
Section 8 Racing We are nuts about racing.
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: bentwheel43]
#1444233
05/29/13 11:18 PM
05/29/13 11:18 PM
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Joined: Nov 2006
Posts: 635
mississippi
bentwheel43
mopar
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mopar
Joined: Nov 2006
Posts: 635
mississippi
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It sucks good it will suck your hand down to it.I will try a cap on it and try that but it won't let the cool clean air in.The pump is off a 2001 firebird.
Last edited by bentwheel43; 05/29/13 11:30 PM.
Section 8 Racing We are nuts about racing.
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: bentwheel43]
#1444234
05/30/13 12:10 AM
05/30/13 12:10 AM
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Joined: Jan 2011
Posts: 4,785
Utah and Alaska
astjp2
master
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master
Joined: Jan 2011
Posts: 4,785
Utah and Alaska
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Shell says that you need 140+ degree oil temps for 1 hour to get rid of the water. Airplane engines are aluminum and have this requirment also. Tim
1941 Taylorcraft
1968 Charger
1994 Wrangler
1998 Wrangler
2008 Kia Rio
2017 Jetta
I didn't do 4 years and 9 months of Graduate School to be called Mister!
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: astjp2]
#1444235
05/30/13 08:22 AM
05/30/13 08:22 AM
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Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
Hemi Allstate
OP
master
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OP
master
Joined: Mar 2006
Posts: 2,675
Mt. Eden Ky.
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As usual a lot of good information here. Some good ideas to look into. I think first off I will change the t-stat. Thanks to all, Mark 
1996 Ram 1500 Sport
1968 road runner
1952 Sears Allstate licensed, pump gas, Hemi 5.98 @ 115.73 1.33 60 ft. The best is yet to come. Painless Performance / Street RODDER magazine Top 100 for 2019
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Re: Will a PCV help condensation in Alum. Blk.?
[Re: Hemi Allstate]
#1444236
05/30/13 09:30 AM
05/30/13 09:30 AM
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Joined: Jan 2003
Posts: 13,376
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,376
Marion, South Carolina [><]
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Mark...mine usually runs around 180-200 on the street. Just depends on where I'm going and how much highway driving I'm doing since that's where it gets warm. I live way out of town in the sticks, so it isn't a real short trip anywhere, lol. FWIW...I don't recommend a vacuum pump on the street, even though I've had one for the last 5 years on the 'cuda. I've had some issues w/ it, but pulling too much oil isn't one of them. May just be the pump I have...it's an Aerospace Components pump. I'd get the GZ street vacuum pump if I absolutely had to have one for a car that will see street time. If you have standard tension rings, don't bother. 
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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