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11-26-2018
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#1 |
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Join Date: Sep 2018
Location: Asheville
Posts: 62
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Header guts...
What are these connections that were connected to the original headers? Should I be leaving them like this? Thanks for any help!
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11-26-2018
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#2 | |
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Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,709
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Re: Header guts...
Quote:
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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11-27-2018
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#3 |
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Join Date: Sep 2018
Location: Asheville
Posts: 62
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Re: Header guts...
What was the function on the AIR pump?
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11-27-2018
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#4 |
 
Join Date: Jun 2006
Location: Sparks, NV
Posts: 2,852
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Re: Header guts...
It’s an early emissions device. When starting the car cold the engine goes into “choke” mode (to use a carburetor analogy) It runs very rich for several minutes until it warms up. Internal combustion engines run poorly if at all until they reach operating temperature. Air injection was used to pump fresh air into the exhaust to help the catalyst burn up the excess hydrocarbons (fuel). Back in the day catalysts were very inefficient when cold. Today engines run much leaner mixes when cold and cold catalysts are more efficient so air injection is generally no longer used.
H 
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90'ZR-1 #1461 Red/Black Ported Intake, Degreed Cams, OBX Headers & Exhaust, Fidanza FW, Secondary Delete, Custom tune, C6 GS Wheels. Sold 08 C6 Z51 Crystal Red Metallic Sold Vararam Intake, Tune, Sold 05 C6 Z51 Red/Black Sold 90'ZR-1 #1723 Black/Gray Sold but not forgotten 91' Z51 L98 White Vert. My First, you always remember your first. Sold. |
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11-27-2018
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#5 |
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Join Date: Sep 2018
Location: Asheville
Posts: 62
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Re: Header guts...
Interesting! Thanks for the explanation. Hopefully when I remove the pump, I don't remove anything important!
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