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PCV vacuum source. #2947570
07/26/21 09:01 PM
07/26/21 09:01 PM
Joined: Oct 2003
Posts: 11,502
W. Kentucky
justinp61 Offline OP
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W. Kentucky
I sent Dom my BX4 main body to build me a carb using all BLP parts. I run a pcv valve and the BLP base plate he’s using has no provision for one. Should I put the port in my Super Sucker spacer or in the intake or will it matter?

Thanks.

Re: PCV vacuum source. [Re: justinp61] #2947573
07/26/21 09:07 PM
07/26/21 09:07 PM
Joined: Mar 2009
Posts: 2,401
Sydney,Australia
tex013 Offline
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i would add it to the spacer .

Tex


New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
Re: PCV vacuum source. [Re: tex013] #2947596
07/26/21 09:47 PM
07/26/21 09:47 PM
Joined: Aug 2003
Posts: 40,855
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Originally Posted by tex013
i would add it to the spacer .

Tex
iagree up wrench


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: PCV vacuum source. [Re: justinp61] #2947598
07/26/21 09:50 PM
07/26/21 09:50 PM
Joined: Jul 2008
Posts: 597
Boise
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Moparteacher Offline
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Boise
You want it up front by the primaries. Place it in back at the secondary's and you might find cylinders near the back of the block running lean at idle. Although with a 4-hole idle circuit it may be a mute point....nevermind.

Re: PCV vacuum source. [Re: Moparteacher] #2947620
07/26/21 10:47 PM
07/26/21 10:47 PM
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Washington
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madscientist Offline
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Washington
It needs to hook to the ack of the carb. Hooking to a spacer makes it just a vacuum leak. If you have two carbs it should be hooked to both of them. Drill the base plate out to 1/8 pipe and put a brass fitting in there. It’s easy to do.


Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
Re: PCV vacuum source. [Re: Cab_Burge] #2947640
07/27/21 12:24 AM
07/27/21 12:24 AM
Joined: Nov 2004
Posts: 16,039
On the run…
BloFish Offline
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Originally Posted by Cab_Burge
Originally Posted by tex013
i would add it to the spacer .

Tex
iagree up wrench

up


It really doesn't matter whether you win or lose…
as long as you look good doing it!

‘65 A100
‘69 ‘Cuda
‘73 Vega GT
‘06 Mega Cab
‘14 Mercedes SLK 350
Re: PCV vacuum source. [Re: BloFish] #2947646
07/27/21 01:36 AM
07/27/21 01:36 AM
Joined: May 2009
Posts: 492
Temperance, MI
6
68 HEMI GTS Offline
mopar
68 HEMI GTS  Offline
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Temperance, MI
Carb spacer works fine. I have the one on my roadrunner drilled for PCV and vacuum advance. That’s in a 2” 4500 to 4150 spacer. Works great.

84E4F909-4809-4C63-BE50-35F4F4502164.jpeg

68 Dart GTS "HEMI" 10.30 @ 131 pump gas street car 3780#
69 Roadrunner 511 six pack 10.92 drive to track street car
Re: PCV vacuum source. [Re: 68 HEMI GTS] #2947690
07/27/21 08:18 AM
07/27/21 08:18 AM
Joined: Dec 2004
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Rittman Ohio
fourgearsavoy Offline
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493 Indy EZ's by Nick at Compu-Flow
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Re: PCV vacuum source. [Re: justinp61] #2947761
07/27/21 11:15 AM
07/27/21 11:15 AM
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State of confusion
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Thumperdart Offline
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I stopped using mine years ago, why add a diluted oil vapor to your intake charge......


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.....
Re: PCV vacuum source. [Re: Thumperdart] #2947804
07/27/21 12:57 PM
07/27/21 12:57 PM
Joined: Sep 2003
Posts: 17,240
north of coder
moparx Offline
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Originally Posted by Thumperdart
I stopped using mine years ago, why add a diluted oil vapor to your intake charge......



would adding a separator can like the ones available for late model gen 3 challengers and chargers filter out the oil vapor ?
beer

Re: PCV vacuum source. [Re: moparx] #2947806
07/27/21 01:09 PM
07/27/21 01:09 PM
Joined: Dec 2004
Posts: 10,414
Rittman Ohio
fourgearsavoy Offline
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Originally Posted by moparx
Originally Posted by Thumperdart
I stopped using mine years ago, why add a diluted oil vapor to your intake charge......



would adding a separator can like the ones available for late model gen 3 challengers and chargers filter out the oil vapor ?
beer


I use one of those clear Fram fuel filters inline between the carb and PCV and it traps a lot of oil. I change it a few times a year. twocents

Gus beer


64 Plymouth Savoy
493 Indy EZ's by Nick at Compu-Flow
5-Speed Richmond faceplate Liberty box
Dana 60
Re: PCV vacuum source. [Re: moparx] #2947810
07/27/21 01:22 PM
07/27/21 01:22 PM
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State of confusion
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Thumperdart Offline
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I ran a home made oil separator but still had residual in the intake runners......


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.....
Re: PCV vacuum source. [Re: Thumperdart] #2947840
07/27/21 03:12 PM
07/27/21 03:12 PM
Joined: Oct 2003
Posts: 11,502
W. Kentucky
justinp61 Offline OP
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I've always ran one as I don't run evac tubes. Plus it made 3 HP on the dyno with it hooked up. biggrin

I don't see any sign of oil in the carb or intake and there was none on the spacer.

IMG_4812.jpgIMG_4813.jpg
Re: PCV vacuum source. [Re: justinp61] #2947842
07/27/21 03:17 PM
07/27/21 03:17 PM
Joined: Oct 2003
Posts: 11,502
W. Kentucky
justinp61 Offline OP
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Speaking of the spacer, it didn't line up very well with the intake opening. After talking to HVH I did a little grinding. Don't know if it'll help but I feel better. The gasket is matched to the intake.

IMG_4802.jpgIMG_4806.jpg
Last edited by justinp61; 07/27/21 03:18 PM.
Re: PCV vacuum source. [Re: justinp61] #2947848
07/27/21 03:30 PM
07/27/21 03:30 PM
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State of confusion
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Thumperdart Offline
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That does look real clean but I'd prefer none of the controlled vacuum leak stuff just 2 breathers......


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.....
Re: PCV vacuum source. [Re: Thumperdart] #2947854
07/27/21 04:12 PM
07/27/21 04:12 PM
Joined: Oct 2003
Posts: 11,502
W. Kentucky
justinp61 Offline OP
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Re: PCV vacuum source. [Re: moparx] #2947861
07/27/21 04:30 PM
07/27/21 04:30 PM
Joined: Oct 2010
Posts: 2,280
Ambridge, Pa.
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rickraw Offline
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I put this on my ram. Upr makes the best

D97C60E8-E52D-4BC5-92C7-E1A5ECBA7472.jpeg
Re: PCV vacuum source. [Re: fourgearsavoy] #2948012
07/28/21 06:31 AM
07/28/21 06:31 AM
Joined: Apr 2006
Posts: 4,130
West Plains, MO
DrCharles Offline
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West Plains, MO
Originally Posted by fourgearsavoy
I use one of those clear Fram fuel filters inline between the carb and PCV and it traps a lot of oil. I change it a few times a year. twocents

I tried a small (about 3" high) cyclonic separator and it collected only a few drops in a couple hundred street miles... so I removed it shruggy







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