pcv , valve cover and TB vaccum line help
05-18-2010, 07:45 PM
#1
TECH Apprentice
Thread Starter
iTrader: (6)
Join Date: Sep 2005
Posts: 398
Likes: 0
Received 0 Likes
on
0 Posts
pcv , valve cover and TB vaccum line help Hey guys i need some info for my mustang ls1 swap. Here is what my vaccum line do right now.
The pass side valve cover [ front port ] runs to the top Thottle body port that does not draw vac when at idle.
The pass side valve cover [ back port] has a hose that runs over to the pcv valve on the drivers side valve cover.
the two vaccum ports on the intake behind the TB are blocked off
does this sound right guys
The pass side valve cover [ front port ] runs to the top Thottle body port that does not draw vac when at idle.
The pass side valve cover [ back port] has a hose that runs over to the pcv valve on the drivers side valve cover.
the two vaccum ports on the intake behind the TB are blocked off
does this sound right guys
05-18-2010, 08:04 PM
#3
9 Second Club
iTrader: (23)
Join Date: Oct 2002
Location: Mastic Long Island N.Y.
Posts: 1,150
Likes: 0
Received 0 Likes
on
0 Posts
There is no draw from the intake the way you have it setup and thats the reason the throttle body port does not draw vaccume at idle. Very easy fix here for you run a line from the intake port behind the TB (that is currently blocked off) to the PCV on the drivers valvecover. Cap the rear port on the passenger valvecover and leave the TB hose that runs to the front port on passenger side alone. The path of fresh air will then be :
Filtered air will enter the TB port continue into the front port on passenger side run ACROSS the crankcase to the drivers side rear port where it exits the motor and is drawn into the intake manifold.
Filtered air will enter the TB port continue into the front port on passenger side run ACROSS the crankcase to the drivers side rear port where it exits the motor and is drawn into the intake manifold.
05-18-2010, 08:05 PM
#4
TECH Apprentice
Thread Starter
iTrader: (6)
Join Date: Sep 2005
Posts: 398
Likes: 0
Received 0 Likes
on
0 Posts
they tee and go to the pass side nipple thats behind the Thottle body on the intake? . Ive tried to hook to this nipple and it seems it pulls way to much vaccum on the crank case, a min or two after its hooked up it starts to make a crazy noise, like a high pitch sqeal
05-18-2010, 08:31 PM
#7
TECH Fanatic
iTrader: (52)
Join Date: May 2004
Location: Kingsland, GA
Posts: 1,354
Likes: 0
Received 0 Likes
on
0 Posts
Taken from the thread: https://ls1tech.com/forums/11059703-post70.html this is how you would do it with a catch can.
