Ok so what do you guys think?

I have no need of emmision control and cant see that piping exhaust back through the engine can be any good. Yes I know it reduces engine temps but why would anyone put waste products back through the engine.....

When I bought my '78 the smog pump was missing anyway, so when I installed an Edelbrock intake I removed the EGR and its related components. In my case the car ran better and it cleaned up the appearance under the hood.

I believe that an EGR valves only come on at idle at all other times the're closed. So a properly operating EGR valve shouldn't have any effect on performance.

if you have more than a mild camshaft  valve overlap does the same thing as an egr valve,  look at a camshaft profile, the intake valve will open before the piston reaches TDC and the exhaust valve closes after TDC, generally the wilder the cam the more the overlap.

So If you have a wild cam, the EGR isn't needed since the camshaft itself is doing the job and the engine isn't generating a lot of vacuum to suck exhaust gassesthrough the EGR .So as gunslinger pointed out, removing it does clean up the engine compartment.

 

 

Actually, the EGR is closed at idle, then opens as throttle increases, and closes again at wide open.

It send exhaust gas into the cylinder.  The exhaust has already been burned, and can't burn again, so for all purposes, it's inert.

Inert gas won't change percentage of air to fuel.  It's not air and not fuel.  As a result it slows down combustion due to diluting the air fuel mix, with out changing it's percentage.  This makes it burn cooler.  Why?  at about 2500 deg F. the engine starts to ping and knock, and produces a lot of NOx.

There is not enough heat a idle to cause a NOx problem, and at wide open the engine burns richer.  Richer mixtures burn cooler, so the EGR is not needed.

Try plugging the hose to the EGR and going for a drive.  If it does not ping, knock, or run hot, you can remove it.   Provided the car is over 25 years old.  25 or less and the EPA doesn't like any one removing them.  Sort of illegal.  Over 25 years old has no federal restrictions.  Some states still complain.

Im in the UK so its not a problem to remove it. If I remove it then it will decrease my mpg....more fuel has to enter cylinder to fill space previously occupied by the 'inert' gas...

Will plug the hose and see what happens. Thanks for the replies.

Does anybody make a "aftermarket plate" that would cover the hole in the intake manifold where the EGR use to go?  THANKS

Why not just buy a complete performance manifold from the likes of Edelbrock or similar without the EGR port? You'd end up with better performance and another plate you wouldn't have to seal.

Thats what I did ,put a non EGR Edelbrock Performer manifold on looks good ,no ugly EGR Ron 7838892.7583333333