2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

What Are Hard Pipes/Lines On Firewall For?

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Old Jun 8, 2007 | 07:20 AM
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From: Bend OR - Seattle WA
What Are Hard Pipes/Lines On Firewall For?

I just got done swapping out the my TII engine for another one


There is a hardline on the firewall. There are 4 total, 2 small ones and 2 bigger ones. The lower large line runs from the pass side of the firewall to the drivers side, then has a hose coming off of it.

What is that hose for and where does it go? The only vacuum port i see thats even close to it is the one at the base of the oil neck on the iron?

Thanks for the help rexClub
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Old Jun 8, 2007 | 09:30 AM
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Comes from the charcoal canistor?

Probably connects to the port on the oil fill tube.
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Old Jun 8, 2007 | 09:48 AM
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From: Bend OR - Seattle WA
im not sure where its going.. it goes to the pass side right behind the abs unit and then i loose track of it "i have a plate bolted up over there that holds my sbc, evc and fbcd.. so i haven't pulled it out to look under..
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Old Jun 8, 2007 | 10:14 AM
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From: n
It's emissions related.


-Ted
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Old Jun 8, 2007 | 11:19 AM
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From: Bend OR - Seattle WA
so its safe to assume that i can just pull it off? good deal...
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Old Jun 8, 2007 | 11:24 AM
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You also have brake lines, brake booster line and the return for the canister.
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Old Jun 8, 2007 | 11:53 AM
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well i know that some are for the brakes, im just curious about the lower large line that has a hose coming off it.. Im not gonna pull the actualy brake lines..
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Old Jun 8, 2007 | 09:32 PM
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From: n
Um, why don't you just trace it?

There's a short "pipe" that does eventually go to the brake booster - is that the one you're talking about?


-Ted
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