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Where do these go? (engine bay pics)

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Old Jun 22, 2004 | 01:45 PM
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weepul's Avatar
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From: cincy
Where do these go? (engine bay pics)

Got the car last week...failed to notice if there were previously hoses in these places or not.




First pic is tube coming from rear of intake manifold?



Second one is on the exhaust manifold?
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Old Jun 22, 2004 | 01:48 PM
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The lower one goes to the BOV. The upper one goes to the airbox
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Old Jun 22, 2004 | 01:50 PM
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what are your intake hoses wrapped with? that heat blocking stuff?

just like turbo jeff said, first to air box, second to bov
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Old Jun 22, 2004 | 01:57 PM
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From: cincy
Yeah it's some shatty heat wrap =T So, is the first one sucking any air in even with the airbox missing? (ie: should i put a breather on it?)

The second isn't going to anything though...there's no hose connected to it or bov. It's not the clear tube to the left of the circle, it's a flange coming off the actual manifold itself.
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Old Jun 22, 2004 | 02:03 PM
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yeah thats your bov outlet, Unless that is capped or has a bov on it your gonna have one major boost/vacuum leak
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Old Jun 22, 2004 | 02:04 PM
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From: cincy
Could be why I idle like a hemi and pull -8 vacuum at idle =)
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Old Jun 22, 2004 | 02:09 PM
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Originally posted by weepul
Yeah it's some shatty heat wrap =T So, is the first one sucking any air in even with the airbox missing? (ie: should i put a breather on it?)

The second isn't going to anything though...there's no hose connected to it or bov. It's not the clear tube to the left of the circle, it's a flange coming off the actual manifold itself.
Just plug them both. You can get hose caps from the HELP! section of most auto stores.
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Old Jun 22, 2004 | 02:17 PM
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From: Dove le cose sono fatte il vecchio moda il senso
Before you plug the BOV outlet on the Y-Pipe,...make sure you have a BOV connected somewhere on your IC pipe line.

If not, then you'll need to install a BOV on the outlet shown in the photograph.
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Old Jun 22, 2004 | 02:24 PM
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Rotary Freak
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well, it he is running non-sequential, he only needs one but yea make sure you have a bov in there somewhere!

your motor/turbo's wont last too long without one!!
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Old Jun 22, 2004 | 02:42 PM
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I think that the preveious owner of the car took out those valves to make that blow off valve sound read this.Hope this helps.

"If you want to make the same blow off valve noise between shifts that the after-market blow-off valves do, just remove the rubber hose that goes from your air box to the factory blow-off valve. Remember to cap the hole on the air box."

Got the info from http://www.rx7.org/Robinette/notes_engine.htm
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Old Jun 22, 2004 | 03:12 PM
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You still need the BOV, just the hose to connect it to the airbox doesn't need to be there.

The BOV missing will cause a HUGE boost leak, it will not effect vacuum.
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Old Jun 22, 2004 | 03:19 PM
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Just want to add to my original post: *IF* you don't already have a BOV attached to the IC piping somewhere, then you need to use the connection off the Y-Pipe as turbojeff has mentioned. If you already have a BOV on your IC piping somewhere else, you can and should cap it.
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