how important is EGR for a daily driver?

[pontiacgp]

I'll go with an EGR valve then. I wasn't about to delete the PCV system, it's kind of important.

GM performance has a low rise vortec intake with EGR, it's 325 bucks though.

vortec heads don't have an egr port...

 

[Clone TIE Pilot]

Maven that pretty much sums it up, dumping exhaust gas back into the intake track has obvious side effects, as far as the PCV system like I said a vacuum pump is optimum but is very pricey, I will allow a motor to dump into the atmosphere tho before I suck crankcase gases back into the combustion chamber, having a negative pressure in the crankcase is the best but as long as it never has positive pressure the motor will work fine

EGR also helps to fight spark knocking and reduces throttling losses. Also no state allows you to disable or remove any low emission part since it is against federal law. What some states do is they just don't bother to inspect your car anymore, but it doesn't make emission tampering legal at all. It just lowers your chance of being caught and fined $2,500. Even classic and historic tags do not make tampering with your emission systems legal, they only reduce the risk of being caught. Also removing the EGR sets off a trouble code in the CCC, though you can get ZZ4 PROMs that deletes EGR.

Well the other point of PCV is to make the crankcase a closed vent system to help keep moisture out of the crankcase. PCV was invented back during WW2 as a superior crankcase venting system for tank engines. Open venting will allow alot of moisture into the crankcase causing the oil to break down faster, the same downside as open gas tank venting but with the fuel. It was discovered in 1958 that the road draft tube was a major source—about half—of the hydrocarbons coming from the automobile. GM's Cadillac Division, which had built many tanks during WWII, recognized that installation of PCV on vehicles could bring the first major reduction in automotive hydrocarbon emissions. After confirming the PCV valve's effectiveness at hydrocarbon reduction, GM offered the PCV solution to the entire U.S. automobile industry, royalty free, through its trade association, the Automobile Manufacturers Association. PCV quickly became standard equipment on all vehicles worldwide because of its benefits not only in emissions reduction but also in engine internal cleanliness and oil lifespan. The one thing to look out for are the flow rates of different PCV valves. Different setups and engines require different flow rates. Sometimes the aftermarket like FRAM offers valves with a incorrect flow rate, which is wise to use OEM PCV valves.

 

[Clone TIE Pilot]

I'll go with an EGR valve then. I wasn't about to delete the PCV system, it's kind of important.

GM performance has a low rise vortec intake with EGR, it's 325 bucks though.

vortec heads don't have an egr port...

That is why with the Vortec EGR intake, you need to run an external EGR line from the exhaust manifold/header to the intake manifold. This is what factory vortec SBCs in trucks and vans do. GM offers an external EGR line kit but no one talks about them.

 

[pontiacgp]

I'll go with an EGR valve then. I wasn't about to delete the PCV system, it's kind of important.

GM performance has a low rise vortec intake with EGR, it's 325 bucks though.

vortec heads don't have an egr port...

That is why with the Vortec EGR intake, you need to run an external EGR line from the exhaust manifold/header to the intake manifold. This is what factory vortec SBCs in trucks and vans do. GM offers an external EGR line kit but no one talks about them.

I know that, I was pointing out the vortec intakes do not have an EGR. I don't use the EGR but I do have one jb welded to my intake so the emission enforcers stay happy

 

[Clone TIE Pilot]

I was just making sure the OP and everyone else reading know about the EGR line kit, I didn't mean to imply you didn't know about it . Inspecters do usually only check for that such items are in place but they usually don't check to see if the parts are indeed working.

 

[pontiacgp]

I was just making sure the OP and everyone else reading know about the EGR line kit, I didn't mean to imply you didn't know about it . Inspecters do usually only check for that such items are in place but they usually don't check to see if the parts are indeed working.

not a problem, here in Ontario they can only check to see if emissions parts are still installed. Heck I even got stopped once with a previous winter driver I had, a 1989 Pathfinder...

 

[gdouaire]

interesting post. thanks for asking / sharing the info.

 

[G_Body_Enthusiast]

I know that, I was pointing out the vortec intakes do not have an EGR. I don't use the EGR but I do have one jb welded to my intake so the emission enforcers stay happy

http://www.summitracing.com/parts/nal-1 ... /chevrolet It certainly appears to have an EGR provision...

 

[pontiacgp]

I know that, I was pointing out the vortec intakes do not have an EGR. I don't use the EGR but I do have one jb welded to my intake so the emission enforcers stay happy

http://www.summitracing.com/parts/nal-1 ... /chevrolet It certainly appears to have an EGR provision...

your right, it does have a provision for an EGR. They must have made that to trick the authorities. I have never seen that before.

 

[MightyCarlo86]

On my ZZ4 I thought it was funny that the intake has the egr port but underneath the intake who knew that there actually wasn't any egr passages besides the one in the intake lol