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3.4 DOHC Vacuum Line ? by joshuaz99
Started on: 02-27-2005 11:11 AM
Replies: 49
Last post by: Steven Snyder on 08-08-2005 04:28 AM
Kohburn
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Report this Post08-01-2005 01:06 PM Click Here to See the Profile for KohburnSend a Private Message to KohburnDirect Link to This Post
and you don't get any oil out of the breather filter?
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ltlfrari
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Report this Post08-01-2005 03:07 PM Click Here to See the Profile for ltlfrariClick Here to visit ltlfrari's HomePageSend a Private Message to ltlfrariDirect Link to This Post
Since there are no moving parts on the 3.4 canister at least, I am guessing it does not really matter which way up it goes. The Fieros can has a vacuum operated valve so orientation may be important although I think the valve is spring loaded. I just mounted mine the same way up as the Fieros can.
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Kohburn
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Report this Post08-01-2005 04:16 PM Click Here to See the Profile for KohburnSend a Private Message to KohburnDirect Link to This Post
unless you get liquid fuel in it , it doesn't matter - you could mount it sideways and crooked if you wanted
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Tom Slick
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Report this Post08-01-2005 04:40 PM Click Here to See the Profile for Tom SlickSend a Private Message to Tom SlickDirect Link to This Post
 
quote
Originally posted by Kohburn:

unless you get liquid fuel in it , it doesn't matter - you could mount it sideways and crooked if you wanted

that's the answer i've been looking for. i'm mounting mine sideway in the passenger rear wheel well.

thanks...

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FieroReinke
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Report this Post08-01-2005 08:10 PM Click Here to See the Profile for FieroReinkeSend a Private Message to FieroReinkeDirect Link to This Post
No I do not get any oil out of the breather filter. It is as clean as when i put it on. To my understanding the PCV system needs one place air to get in and the other locations is for the intake to suck the air out of. I have the front cam cover 'T'ed into the PCV line coming out of the crankcase cover which goes into the intake right behidn the throttle body.

Chris

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Steven Snyder
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Report this Post08-02-2005 01:49 AM Click Here to See the Profile for Steven SnyderClick Here to visit Steven Snyder's HomePageSend a Private Message to Steven SnyderDirect Link to This Post
 
quote
Originally posted by Tom Slick:
thanks steven.
do you have photo of the expansion tank cause i can't find mine (i have an '88).
the previous owner probably took it out, if thats the case do i need to add it back?

Yeah, here's a pic so you can see where its located. This is the passenger side wheel well..

You need to add it back if its missing. One line on it goes to the fuel tank via a hard line, and the other goes to the evap canister. If you dont add it you will quickly destroy your evap tank on a hot day with a full tank of gas because liquid gas will likely go into the evap canister! 87-88s have the expansion tank because the space used for expansion in the earlier fuel tanks is used for actual fuel, thus requiring the use of a remote expansion area.

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Tom Slick
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Report this Post08-02-2005 08:02 AM Click Here to See the Profile for Tom SlickSend a Private Message to Tom SlickDirect Link to This Post
 
quote
Originally posted by Steven Snyder:
Yeah, here's a pic so you can see where its located. This is the passenger side wheel well..

You need to add it back if its missing. One line on it goes to the fuel tank via a hard line, and the other goes to the evap canister. If you dont add it you will quickly destroy your evap tank on a hot day with a full tank of gas because liquid gas will likely go into the evap canister! 87-88s have the expansion tank because the space used for expansion in the earlier fuel tanks is used for actual fuel, thus requiring the use of a remote expansion area.

thanks for the photo Steven.

well this just sucks!!!
where the expansion tank is located is where i was going to mount my evap canister.
now i got to find an expansion tank. i don't have any of that hardware in my car. it looks
like the previous owner took it out.

thomas...

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Steven Snyder
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Report this Post08-03-2005 01:20 AM Click Here to See the Profile for Steven SnyderClick Here to visit Steven Snyder's HomePageSend a Private Message to Steven SnyderDirect Link to This Post
I think Rickady88GT used the expansion tank and charcoal canister from the donor car (Olds Intrigue?) for his 3.5 S* swap. If I understand correctly, they are integrated together as one unit. I am not sure of the size of the expansion tank, but I don't think Rick has had any problems with it so far. You may want to look into that, as it fits where the original expansion tank went and solves both problems.
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Tom Slick
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Report this Post08-07-2005 10:38 PM Click Here to See the Profile for Tom SlickSend a Private Message to Tom SlickDirect Link to This Post
i got an expansion tank today (from a fellow PFF (MstangBware)) but
i need to know which hose goes where. i assume that the line going
into the tank from the bottom is the one from the fuel tank and the
other one on the top of the exp. tank go to the evap canister. am i
correct in my assumption?

now that the exp. tank is where i was going to put my evap. canister
where am i going to hide this canister. does it have to be mounted
higher that the exp. tank or at least the same height. i'm thinking about
putting it in the area behind the inner fender wheel well close to the
tail-lights. there seems to be a lot of empty space there. i want it out of
sight since it's so big.

thanks...

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Steven Snyder
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Report this Post08-08-2005 04:28 AM Click Here to See the Profile for Steven SnyderClick Here to visit Steven Snyder's HomePageSend a Private Message to Steven SnyderDirect Link to This Post
Your assumption is correct. The bottom port goes to the fuel tank, and the top goes to the evap canister. The line on the bottom of the expansion tank has a brief section of fuel hose that connects to a hard line. This hard line travels along the firewall to the hole leading into the fuel tank area. A rubber hose (covered in convoluted tubing) attaches to it there and connects it to the fuel tank. You could probably route the line in a much cleaner manner than the factory to keep it out of sight.

If you wanted to run lines all the way across the engine bay (or extend the existing ones for the original charcoal canister location) you could put the canister in the driver's side wheel well if the fuel tank filler tube isn't in the way.
Come to think of it.. since the port on the expansion tank that feeds the vapor canister is up top, you probably could just put it beneath the expansion tank. If the expansion tank was filled up all the way it would flood it at nearly any location; there isn't much volume in those lines especially if its on the passenger side.

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