REMOVING SMOG JUNK???
Burning Brakes
Joined: Oct 2001
Posts: 1,185
Likes: 0
From: New Wilmington PA
Re: REMOVING SMOG JUNK??? (SIGNGUY)
Welcome to the dark side. :lol:
Really about the only piece of emissions equipment that helps the engine is the PCV valve. Though EGR does reduce burn temps it always seemed silly to me to intentionally poision your intake charge.
Cat can go, so can exhaust manifolds if you're interested in switching to true duals.
You'll probably want to keep your charcoal canister.
Air pump can go.
TCS is something you want to ditch.
After removing all this crap you'll be amazed at how you can actually see an engine in that compartment. :yesnod:
Of course all of this is illegal on a federal level so if anybody asks I never really advocated removing this equipment. I just said that in theory the removal of such systems would benefit performance. :D
Take care! :cheers:
Really about the only piece of emissions equipment that helps the engine is the PCV valve. Though EGR does reduce burn temps it always seemed silly to me to intentionally poision your intake charge.
Cat can go, so can exhaust manifolds if you're interested in switching to true duals.
You'll probably want to keep your charcoal canister.
Air pump can go.
TCS is something you want to ditch.
After removing all this crap you'll be amazed at how you can actually see an engine in that compartment. :yesnod:
Of course all of this is illegal on a federal level so if anybody asks I never really advocated removing this equipment. I just said that in theory the removal of such systems would benefit performance. :D
Take care! :cheers:
Team Owner
Joined: Jul 1999
Posts: 65,492
Likes: 230
From: Orange Park Florida
Re: REMOVING SMOG JUNK??? (SIGNGUY)
Sign, Cooks is basically right, note in my previous post on anohter thread, that I advocated rebuilding carb, and enrichening the Off Idle Transferr Circuit slightly, that compensates for factory setting allowing for EGR operation....then it should run like an older muscle car....now problem is, the intake manifolds there are considered restrictive, so to change to something better...but now we getting into some fairly major changes...still make it look basically stock under the hood though...
as you read threads, you find more ideas and options for engine mods....the SBC engine is probably the most versatile auto engine ever made, can be redone in so many iterations it's amazing....
I think you should definately do something with the exhaust system also....
but all this depends on your budget....;-)))....don't it allways???
GENE
as you read threads, you find more ideas and options for engine mods....the SBC engine is probably the most versatile auto engine ever made, can be redone in so many iterations it's amazing....
I think you should definately do something with the exhaust system also....
but all this depends on your budget....;-)))....don't it allways???
GENE
Drifting
Joined: Jan 2002
Posts: 1,645
Likes: 11
From: Schaumburg IL
Re: REMOVING SMOG JUNK??? (SIGNGUY)
All the previous posts are right. Do check out your states emission inspection laws before you do anything. Some states have gone to "if it was there it has to be there inspection, even though you can pass without it.
Thread Starter
Safety Car
Joined: Mar 2002
Posts: 4,411
Likes: 1
From: Okeechobee Florida
Re: REMOVING SMOG JUNK??? (paul79)
first of all...i dont have a pump...
removed the EGR today...what is TCS ???
and i agree ...headers are next, along with an intake manifold...but AFTER Carlisle...$$$$$
:eek:
removed the EGR today...what is TCS ???
and i agree ...headers are next, along with an intake manifold...but AFTER Carlisle...$$$$$
:eek:
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Team Owner
Joined: Aug 1999
Posts: 30,995
Likes: 98
From: Ontario
Re: REMOVING SMOG JUNK??? (SIGNGUY)
Never heard of it. I believe the reference is to the Thermal Vacuum Switch (TVS) located in the thermostat housing. This is temperature and vacuum sensitive to open and close the exhaust heat riser control valve on initial start-up. Passenger side between the exhaust maniflod and the pipe. That butter-valve is closed (full vacuum) when cold and diverts heat across the intake manifold to operate the heat (non-electric) choke. When the TVS senses good heat the heat riser opens to exhaust flow. The danger with this type of system is that the TVS will fail and the heat riser valve will remain in a closed condition. Or it will be corroded to stay that way. I lubricate mine twice each year with a good penetrating fluid. Other owners just give up and gut the heat riser valve: take out the butterfly. Then JB Weld or weld the holes. That leaves you without a choke and heat start-up but in some areas of North America that is not an issue. If you need pics of these components, do let me know.
[Modified by paul79, 8:38 PM 6/22/2002]
[Modified by paul79, 8:38 PM 6/22/2002]
Le Mans Master
Joined: Mar 2002
Posts: 7,456
Likes: 2
From: Coming home from Luckenbach Texas
Re: REMOVING SMOG JUNK??? (paul79)
If TCS is working, it doesn't cause any problems. In fact, it helps warm up the engine faster. If it ain't working, bypass it. Otherwise, you can leave it alone.
Drifting
Joined: Jan 2002
Posts: 1,645
Likes: 11
From: Schaumburg IL
Re: REMOVING SMOG JUNK??? (page62)
TCS is Transmission Controlled Spark. It uses a vacuum control solenoid valve to allow vacuum advance to the distributor either by being in high gear or by temp sensing of the coolant. The sensor is the one in the rt hand head, the vacuum advance solenoid in on the intake and the delay relay is on the firewall. These were locations for 73/74 but I don't think they changed too much. If you pull this stuff the sensor in the rt hand head is a great place for one for either electric fans or an electric or mech. accurate temp gauge.
