TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

Can the PCV valve share a vacuum source??

Thread Tools
 
Search this Thread
 
Old Dec 24, 2003 | 01:53 PM
  #1  
david auster's Avatar
Thread Starter
Member
25 Year Member
iTrader: (10)
 
Joined: Apr 2000
Posts: 467
Likes: 0
From: Pinehurst, NC, USA
Car: 1992 Camaro
Engine: 350 miniram
Transmission: T-56
Can the PCV valve share a vacuum source??

I am hooking up my new motor. Its a 350 with the miniram intake. Its the older cast so they didn't provide me with enough vacuum ports for everything. What I would like to do is "t" the PCV valve into the same vacuum line that my brake booster is using. Can I do this, or does it have to have its own seperate source?

Thanks
Reply
Old Dec 24, 2003 | 02:14 PM
  #2  
MrDude_1's Avatar
Supreme Member
20 Year Member
 
Joined: Jun 2001
Posts: 9,550
Likes: 4
From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
i would just drill and tap a new hole in the intake...

if you dont already have it installed on the motor...
Reply
Old Dec 24, 2003 | 03:08 PM
  #3  
david auster's Avatar
Thread Starter
Member
25 Year Member
iTrader: (10)
 
Joined: Apr 2000
Posts: 467
Likes: 0
From: Pinehurst, NC, USA
Car: 1992 Camaro
Engine: 350 miniram
Transmission: T-56
Thats not an option at this point in time. This is one of the last few things to hook up before I fire it up and no way I am pulling the intake. Thanks for the reply.

So can somebody tell me if this is ok or not and why?

Thanks
Reply
Old Dec 24, 2003 | 03:49 PM
  #4  
3.8TransAM's Avatar
Moderator
 
Joined: Feb 2000
Posts: 7,015
Likes: 2
From: Schererville , IN
Car: 91 GTA, 91 Formula, 89 TTA
Engine: all 225+ RWHP
Transmission: all OD
Axle/Gears: Always the good ones
i would prefer to have it connected to its wn dedicated source, but i dont see any type of major prbolem if u absolutely have to T it into another connection.. Just remember it will pull gunk/garbage/vapors thru it, which is why i would rather see it using its own source... Make sure u use the one way check valve/filter combo like the older carbed cars used for the line to the booster, help keep some garbage out i would imagine

LAter
Jeremy
Reply
Old Dec 26, 2003 | 11:42 PM
  #5  
JakeJr's Avatar
Supreme Member
 
Joined: Jul 2000
Posts: 1,014
Likes: 0
From: Kempner,TX,
Car: 1996 Vette / 1992 GSX1100F Suzuki
Engine: 1996 Corvette Coupe 388 LT1 (+.060)
Transmission: Auto
Axle/Gears: 3.07
Great advice. Like most things, there's the right way, there's the wrong way and there's the way it going to be done

Should have a dedicated plenum source.

You asked, right?

Jake
Reply
Old Dec 28, 2003 | 08:42 PM
  #6  
91GTABird's Avatar
Senior Member
 
Joined: Aug 2001
Posts: 972
Likes: 0
From: Memphis, Tn
Car: 92' RS
Engine: 357
Transmission: TH350
Axle/Gears: 4.10
Im not a expert or anything like that im just putting my 2 cents worth in hoping it might help. If you T'd it closer to the plenum then you should be alright considering that air is trying to be pulled from the booster and any "junk" pulled from the top of the head "pcv" valve will more than likely go to the plenum and not to the booster.
Reply
Old Dec 29, 2003 | 08:38 AM
  #7  
MrDude_1's Avatar
Supreme Member
20 Year Member
 
Joined: Jun 2001
Posts: 9,550
Likes: 4
From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Originally posted by Bri3212
Im not a expert or anything like that im just putting my 2 cents worth in hoping it might help. If you T'd it closer to the plenum then you should be alright considering that air is trying to be pulled from the booster and any "junk" pulled from the top of the head "pcv" valve will more than likely go to the plenum and not to the booster.

thats not really the issue..

think of this..



the brake booster has a nice BIG (for a vac line) vac line.... it needs to move a decient amount of air, and fairly quickly to keep the brakes ready and boosted all the time...


the PCV has a big vac line because its trying to suck a good amount of fumes out of the motor.

if you connect the two with a T.. the part between the manifold and the T would have to be alot bigger then the other two, or its going to be a restriction compared to what was there before.....

i would pull it off and tap another connection...
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
1992 Trans Am
History / Originality
27
May 10, 2023 07:19 PM
1fast91
TPI
15
Sep 8, 2015 01:48 PM
1985chevydude
Engine Swap
5
Aug 20, 2015 12:29 AM




All times are GMT -5. The time now is 11:25 PM.