so if u eliminate egr- what do u get - added power or what i noticed if u eliminate something that is using vacumm the engine sounds more powerfull
All the pollution junk has been removed from my 77' Maverick, but the EGR valve is still there. It's sealed off on the inside. It did'nt work anyway. There is a noticable increase in horsepower without all the smog stuff on the car.
will a car in california pass the state inspection standards with the smog crap removed?that's the big question you should ask about.
Properly working the EGR is only open at idle or during high vacuum. And from the size of the hole it only puts a small amount of exhaust gas in the mix,lowering the burn temp . . for what ever reason. IF there is too much exhaust in the mix the Hc (Unburned gas) goes up and I fail. . .I mean the car will fail the test. . stupid emissions. . . I'm looking for a picture of the stock vacuum hose connections for the EGR and Dist. as IL is requiring a visual inspection befor they will test. . .stupid emissions!
i have the vacum diagrams for a inline 6 but not in a digital picture i can draw them on [paint] or something if u want them i think they are for 74-45
If you could draw it out that would be great. I've got a 302, but I figur how much different could there be between 6 and 8. The key seems to be a 2 port vacuum switch , a 3 port vacuum switch ,a single vacuum distributer, and no amplifier. The other problem I have is there are 2 vacuum T's. Thanks
i'm almost finished with the first page when i'm done its gonna be posted on here http://www.angelfire.com/blues2/frdmaverickca/index.html
I checked the site. Not sure that is what I need. I see AC and Heater stuff, what I have does not connect in to that.
What is EGR, why and how is it supposed to work. EGR is exhaust gas recirculation. During cruise rpm and road speeds where the car spends most of it running time, the EGR is operated to cool combustion temps thereby lowering oxides of nitrgen emmisions. The same operation and hardware still remains today on most all v6 and v8 and v10 Ford cars and trucks but under electronic control and various versions of design. The old carbed cars run the system with ported valve arangements to make the EGR system operate in the proper cruise and rpm ranges. Normally this system never operates at or near idle nor at heavey throttle opening so it normally does not have any effect on WOT power. Any operation at other times will cause drivabilty problems. A benifit in fuel injected cars that cannot be done in a carbed car is when operation is initated in an FI car, the fuel is cut back and the ignition timing is advanced allowing better fuel mileage. Some models on carbed cars were able to advance the timing by dual diaphram distributor controls combined with port switches and check valves.
It's weird isn't it? Putting hot exhaust gas in your car's intake makes the cylinder temps lower! The reason it works is because the exhaust gas is already burned, so putting it in there means less space for everything else- clean air and fuel. So you can say EGR basically reduces the displacement of your engine. It takes less fuel to have the same A/F ratio. This means for the same amount of fuel, your car burns cooler, and NOx emissions are less with a cooler burn. EGR, if it functions properly, shouldn't hurt WOT performance because it's shut during that time. It should lower NOx emissions and give you a bit better cruise MPG.
