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Registered
Join Date: Mar 2002
Posts: 3,563
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'84-'89 Motronic: Metal tube behind AFM boot?
Guys,
There is a thin metal tube which goes into the back of the Rubber Boot between the AFM and Throttle body. Is this the Brake Booster line, also referred to as the Venturi Line? Please confirm.
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition 
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09-25-2005, 04:10 PM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 16,497
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It is on my '86 3.2
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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09-25-2005, 05:03 PM
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Schleprock
Join Date: Sep 2000
Location: Frankfort IL USA
Posts: 16,639
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My brake booster line comes off a nipple on the intake runner, and from the rubber elbow between the TB and AFM.
But I don't think the metal tube is the venturi piece? I replaced the plastic wye piece and it was called the venturi tube. 
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Kevin L '86 Carrera "Larry" |
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09-25-2005, 07:55 PM
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Registered
Join Date: Mar 2002
Posts: 3,563
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Yup, I confirmed with Todd of Protomotive that the metal tube can be blocked off. It's not really required on the forced induction setup.
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Merv '89 911 Turbo Cab Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
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09-27-2005, 06:55 PM
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