 WTB - Aux Air Regulator, '74 2.0 |
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| ctc911ctc |
 Sep 10 2018, 01:26 PM
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#1
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Senior Member  Group: Members Posts: 890 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States 
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Still in the hunt for one of these - are there compatible systems?
Still need an AAR, anyone, anyone? Thanks in advance! CTC |
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| mgphoto |
Sep 11 2018, 11:08 AM
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#2
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"If there is a mistake it will find me" Group: Members Posts: 1,335 Joined: 1-April 09 From: Los Angeles, CA Member No.: 10,225 Region Association: Southern California |
Any year will work.
But the purpose of the device is to dilute the exhaust gases, to pass emissions standards, no real effect on performance except to reduce throttle braking, not the best for sporty driving. Cap up the ports and leave it out, unless this is a concourse build. |
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| BillC |
Sep 11 2018, 11:35 AM
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#3
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Senior Member Group: Members Posts: 533 Joined: 24-April 15 From: Silver Spring, MD Member No.: 18,667 Region Association: MidAtlantic Region
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QUOTE(mgphoto @ Sep 11 2018, 01:08 PM)  Any year will work. But the purpose of the device is to dilute the exhaust gases, to pass emissions standards, no real effect on performance except to reduce throttle braking, not the best for sporty driving. Cap up the ports and leave it out, unless this is a concourse build. Sounds like you may have confused the AAR with the Decel Valve. The AAR allows extra intake air, for a higher idle speed during cold-start warmup. The Decel Valve limits the amount of vacuum in the intake during deceleration. It does help with emissions, but it also helps to protect the diaphragm in the MPS. |
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| mgphoto |
Sep 11 2018, 07:58 PM
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#4
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"If there is a mistake it will find me" Group: Members Posts: 1,335 Joined: 1-April 09 From: Los Angeles, CA Member No.: 10,225 Region Association: Southern California |
QUOTE(BillC @ Sep 11 2018, 10:35 AM) QUOTE(mgphoto @ Sep 11 2018, 01:08 PM) Any year will work. But the purpose of the device is to dilute the exhaust gases, to pass emissions standards, no real effect on performance except to reduce throttle braking, not the best for sporty driving. Cap up the ports and leave it out, unless this is a concourse build. Sounds like you may have confused the AAR with the Decel Valve. The AAR allows extra intake air, for a higher idle speed during cold-start warmup. The Decel Valve limits the amount of vacuum in the intake during deceleration. It does help with emissions, but it also helps to protect the diaphragm in the MPS. Your right, my bad. |
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| GregAmy |
Sep 12 2018, 07:06 AM
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#5
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Advanced Member Group: Members Posts: 2,264 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States
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Anyone ever try to adapt one of the later Bosch AAR valves, such as from the 84-era 944? Looks like it should be easy to do, and they're available for around $75.
Plus, it may be possible to adjust them so that an electrical connection may not be needed, if mounted on a hot part of the engine. |
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| saigon71 |
Sep 25 2018, 03:24 PM
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#6
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Senior Member Group: Members Posts: 1,994 Joined: 1-June 09 From: Dillsburg, PA Member No.: 10,428 Region Association: MidAtlantic Region 
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PM sent.
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