STS install issues or tricks
Registered User
Joined: Feb 2004
Posts: 38
From: San Diego
Well, I had the same issue with the bov pipe fitting too, so I took a hach saw to it and shortened it underneather the car alittle. The other issue might just need some tweaking, but I have used all the proper bolts so I am not sure. Does the bov need a pressue line going to a vacuum line in the manifold, or does it operate correctly without that valve. I just welded the flange and bolted the bov off, and when the car is in running condition it appears that it works fine.
I am also having an issue with some leaking at the oil fill cap (return line). Mine appears to be the actual cap not seating tight, not the little brass fitting but I will recheck when I get it running again. Thanks for the info, and if you could expand on the oil seperater and catch thing you were talking about I would appreciate it.
I am also having an issue with some leaking at the oil fill cap (return line). Mine appears to be the actual cap not seating tight, not the little brass fitting but I will recheck when I get it running again. Thanks for the info, and if you could expand on the oil seperater and catch thing you were talking about I would appreciate it.
Registered User
Joined: Feb 2004
Posts: 38
From: San Diego
The BOV line is spliced into the connection from the brake booster and the manifold. Fig_4
The oil cap can be turned on the fitting to make it tighter Fig_5
There is an enormous amount of info on catchcans and air / oil separators in this forum. After reading through several threads here is what I choose to do:
I bought a, catchcan capped off the line from the throttle body, and ran a line from the passenger side valve cover to the catch. ( Fig_1, Fig_2, Fig_3, Fig_6) The catch can is mounted behind the headlight since this is a high pressure zone. Under boost, the speed of the car will increase, causing more air to pass by the filter creating a low pressure zone in the tank. Although it’s not as good as a vacuum pump, it should be able to draw the blow by into the tank.
The air / oil separator ( Fig_3) is between the PCV valve and the intake manifold to keep oil from being drawn back into the manifold. If I had it to do over again I would have gotten the can with dual connections and spliced the connection from the intake manifold and added a few check valves. The way it’s set up now, under boost, blow by gets into the air oil separator.
The oil cap can be turned on the fitting to make it tighter Fig_5
There is an enormous amount of info on catchcans and air / oil separators in this forum. After reading through several threads here is what I choose to do:
I bought a, catchcan capped off the line from the throttle body, and ran a line from the passenger side valve cover to the catch. ( Fig_1, Fig_2, Fig_3, Fig_6) The catch can is mounted behind the headlight since this is a high pressure zone. Under boost, the speed of the car will increase, causing more air to pass by the filter creating a low pressure zone in the tank. Although it’s not as good as a vacuum pump, it should be able to draw the blow by into the tank.
The air / oil separator ( Fig_3) is between the PCV valve and the intake manifold to keep oil from being drawn back into the manifold. If I had it to do over again I would have gotten the can with dual connections and spliced the connection from the intake manifold and added a few check valves. The way it’s set up now, under boost, blow by gets into the air oil separator.
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edman
General 1967-2002 F-Body Tech
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Jan 22, 2015 02:45 PM