Emissions Removal Questions
Thread Starter
Racer
Joined: Feb 2002
Posts: 322
Likes: 0
From: Alexandria VA
Emissions Removal Questions
I have a mostly stock 74 L48. I got it registered as an antique, which means I don't have to pass emissions anymore. I know its time to ditch some hoses here and there, but is there any advice from those who have gone this route? Where do I start? There is this hose coming from the PCV in the Valve Cover to the Carb that says "EMISSIONS" really big on it. I wonder what happens when I unplug that? :lol:
Burning Brakes
Joined: Jun 2002
Posts: 792
Likes: 2
From: Norcross GA
Re: Emissions Removal Questions (pingdashf)
Even though you are excempt from State emissions testing (most of the country is) the Imperial Federal Government requires the emissions equipment to remain.
What does this mean to you? Nothing if you are very handy and can do most of the work yourself. If you can't, some shops won't work on a car without the emissions equipement because if the car is found in their shop it could mean a fine up to $10,000.
Bob
What does this mean to you? Nothing if you are very handy and can do most of the work yourself. If you can't, some shops won't work on a car without the emissions equipement because if the car is found in their shop it could mean a fine up to $10,000.
Bob
Melting Slicks
Joined: Jul 1999
Posts: 3,201
Likes: 0
From: Clifton Park NY
Re: Emissions Removal Questions (Ben Taylor)
If your Vette is a 74 L-48 automatic, then there's not much you can ditch. You don't have an AIR pump (big engine compartment clutter), you don't have a 2-1-2 exhaust, which is a major power robber, you just have EGR, Thermal Override (or whatever the heck that's called), PCV and a vapor canister. The former 2 could be eliminated, while the latter 2 are actually good things.
-Pedro
-Pedro
Pro
Joined: Apr 2001
Posts: 545
Likes: 0
From: Waukesha WI
Re: Emissions Removal Questions (Pedro'74)
Pedro, could you explain a little further on that. I just got a new engine put in...the mechanic missed one of the vaccuum lines (to the canister) but pluged the carb port. I just left it that way for now. What is the downside to this? All that is hooked up is the PCV? No other emissions equip remains.
[Modified by DollaGreen, 3:11 PM 9/5/2002]
[Modified by DollaGreen, 3:11 PM 9/5/2002]
[Modified by DollaGreen, 3:11 PM 9/5/2002]
[Modified by DollaGreen, 3:11 PM 9/5/2002]
Melting Slicks
Joined: Jul 1999
Posts: 3,201
Likes: 0
From: Clifton Park NY
Re: Emissions Removal Questions (DollaGreen)
Anthony,
If I understand how these things work, I believe that by leaving that line that comes from the vapor canister open you'd be releasing fuel vapor into the athmosphere (not environment friendly, and smelly anyways...), when you could be burning that fuel. If I remember correctly, the 73 vettes have a "T" at the PCV valve, to which that hose (from the canister) is connected, and one hose going from the "T" to the carb, that takes care of PCV and fuel vapor at the same time. Other 73 owners may confirm that...
-Pedro
[Modified by Pedro'74, 4:21 PM 9/5/2002]
If I understand how these things work, I believe that by leaving that line that comes from the vapor canister open you'd be releasing fuel vapor into the athmosphere (not environment friendly, and smelly anyways...), when you could be burning that fuel. If I remember correctly, the 73 vettes have a "T" at the PCV valve, to which that hose (from the canister) is connected, and one hose going from the "T" to the carb, that takes care of PCV and fuel vapor at the same time. Other 73 owners may confirm that...
-Pedro
[Modified by Pedro'74, 4:21 PM 9/5/2002]
Pro
Joined: May 2000
Posts: 515
Likes: 0
From: IL
Re: Emissions Removal Questions (Pedro'74)
Anthony,
If I remember correctly, the 73 vettes have a "T" at the PCV valve, to which that hose (from the canister) is connected, and one hose going from the "T" to the carb, that takes care of PCV and fuel vapor at the same time. Other 73 owners may confirm that...
-Pedro
[Modified by Pedro'74, 4:21 PM 9/5/2002]
If I remember correctly, the 73 vettes have a "T" at the PCV valve, to which that hose (from the canister) is connected, and one hose going from the "T" to the carb, that takes care of PCV and fuel vapor at the same time. Other 73 owners may confirm that...
-Pedro
[Modified by Pedro'74, 4:21 PM 9/5/2002]
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