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In prep to turbo the 2.7 litre, I found these butterflies in the intake manifold to be nothing but a turbulence inducing menace. So, I decided to take them out. It seemed pointless to just unscrew the flappers and leave the shafts there, so I went all-out.
After disassembly of the vacuum actuator and shafts, I fired up the welder with some aluminium wire and filled in the holes left behind by the shafts. I ground everything flat, and now I have no obstructions in the intake.
I'm no machinist, but I think I did a pretty good job.:thumbsup:
Pic #1 is the before shot
Pic #2 is disassembled
Pic #3 is after welding and grinding
F.Y.I. these butterflies have something to do with EGR operation, but I'm not sure what. I'm using a full stand-alone engine management system, which is not going to use EGR, so this is what I did. I DONT KNOW WHAT WILL HAPPEN WITH FACTORY ELECTRONICS IF YOU DO THIS. It's possible that your engine could go too lean during EGR operation if this interfered with it, and you could end up melting something important.
After disassembly of the vacuum actuator and shafts, I fired up the welder with some aluminium wire and filled in the holes left behind by the shafts. I ground everything flat, and now I have no obstructions in the intake.
I'm no machinist, but I think I did a pretty good job.:thumbsup:
Pic #1 is the before shot
Pic #2 is disassembled
Pic #3 is after welding and grinding
F.Y.I. these butterflies have something to do with EGR operation, but I'm not sure what. I'm using a full stand-alone engine management system, which is not going to use EGR, so this is what I did. I DONT KNOW WHAT WILL HAPPEN WITH FACTORY ELECTRONICS IF YOU DO THIS. It's possible that your engine could go too lean during EGR operation if this interfered with it, and you could end up melting something important.
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