To De-Smog or not to De-Smog...
Since I started this crap about EGR, I need to say that I stand corrected. Exhaust gas has always been present at the base of the intake manifold for the purpose of heating the fuel air mixture. Installing an EGR provision on the intake under the carburetor taps this source of exhaust gas for the emission reduction purpose. Photo from parts manual included.
At the same time, I know what I did. To defeat EGR, I hogged out the hole under the carburetor in the intake and pounded an oil gallery plug into it. I then replaced the exhaust manifold with one that can not provide an exhaust gas source for EGR, nor for carb heat. I also made sure the vacuum source to the EGR valve I had disabled was plugged. Due to the removal of the exhaust manifold, I had to fabricate stand-offs in order to retain the factory throttle & kickdown linkage. Photos attached.
You OK with this, Dan?
Since I started this crap about EGR, I need to say that I stand corrected. Exhaust gas has always been present at the base of the intake manifold for the purpose of heating the fuel air mixture. Installing an EGR provision on the intake under the carburetor taps this source of exhaust gas for the emission reduction purpose. Photo from parts manual included.
At the same time, I know what I did. To defeat EGR, I hogged out the hole under the carburetor in the intake and pounded an oil gallery plug into it. I then replaced the exhaust manifold with one that can not provide an exhaust gas source for EGR, nor for carb heat. I also made sure the vacuum source to the EGR valve I had disabled was plugged. Due to the removal of the exhaust manifold, I had to fabricate stand-offs in order to retain the factory throttle & kickdown linkage. Photos attached.
You OK with this, Dan?
