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Topic: Exhaust tube

in Forum: C3 Fuel, Emission Control, and Exhaust Systems


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Exhaust tube (1/6)
 2/9/10 11:52am
ossw1
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Rocklin, CA - USA

Vette(s):
1970 T-Top350/350hp numbers matching 4 speed. It's a mess and 1970 Convertible 4 speed.


Joined: 4/2/2005
Posts: 484

I am replacing half of my exhaust on the 81. There is a smaller tube running along the side the larger exhaust tube on the passenger side that ends right next the Cadillac converter.  The new converter that I have has a small tube sticking out the side. So the question is what are they for and do I have to meld them together?

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Exhaust tube (2/6)
 2/9/10 1:29pm
DaveMLifetime Member
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Flanders, NJ - USA

Vette(s):
1982 Black, ZZ4, Hooker Side Pipes, 3.55 Rear, Rebuilt & upgraded 700R4, All new suspension, brakes, & new Charcoal interior.


Joined: 1/27/2004
Posts: 2552

They should connect together with a rubber hose. It's part of the A.I.R. system. Use a heavy duty hose, it gets hot under there' don't use vacuum or windshield washer hose.

Dave


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Exhaust tube (3/6)
 2/9/10 2:24pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


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Yup...it's for the air injection(AIR) system. It injects fresh air into the converter to help burn the nasty stuff, since it makes the converter run hotter.
You can connect it with a rubber hose, but it MUST be a high-temp, exhaust compatible hose. Regular hose will likely catch on fire eventually. You can also have a muffler shop weld it together, if ya want, or they can make a small adapter fitting so it will clamp together.


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Joel Adams
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Exhaust tube (4/6)
 2/9/10 4:06pm
dskopp
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Oak Creek, WI - USA

Vette(s):
1981 Great White Shark. Red Interior, 350/190hp. PS, PB (SS), A/C CC, T-Tops, Going to remain as Stock as possible. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vetts Car Club. 175,000 Original miles!!


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Yup, thats what it is!!  Us 81 guys gotta stick together!!!!!
Dan


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Exhaust tube (5/6)
 2/10/10 9:55pm
ossw1
Former Member

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Rocklin, CA - USA

Vette(s):
1970 T-Top350/350hp numbers matching 4 speed. It's a mess and 1970 Convertible 4 speed.


Joined: 4/2/2005
Posts: 484

Hey looking at my original converter there is no place where the tube connects to it. At the end of the small tube there is a rubber piece covering the end. Is this normal? Did non-California car have that setup?
Exhaust tube (6/6)
 2/11/10 12:02am
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 20126

If your original did NOT have the tube connected, then just transfer the rubber cap over to the new converter.

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Joel Adams
C3VR Lifetime Member #56    

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(click for Texas-sized view!)
             NCRS

"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"

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