Smog/AC Delete Questions
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Old June 16th, 2010, 07:50 AM   #1
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Smog/AC Delete Questions


HI,
Looking to delete the smog sh*t on my 95 GT along with the AC unit. My car doesn't need to pass emissions in my state. What parts can be removed without having running issues? I have underdrive pullies and will need a much shorter belt when bypassing the Smog and AC.. Any suggestions on belt size ? Also looking into buying a set of FRPP P headers for this car as I have installed GT40P heads.. Will the header tubes bolt up in the same location as my existing exhaust or will I have to have it made up custom ??? Can I eliminate the emissions tube and EGR setup or will it be used on the FRPP headers ??
Thanx, tom

Last edited by lakefrontlivin; June 16th, 2010 at 07:52 AM.
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Old June 16th, 2010, 11:14 PM   #2
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Just get rid of the smog pump with associated piping/valves and plug off the vacuum lines. You can do the same with the EGR valve and pipe to header but you'll need an EGR eliminator simulator to prevent the "Check Engine" light from coming on. Belt size will probably be about 80" but it's only by trial and error where you'll find the exact size.
You could go for long tubes (more power) instead of shorty headers, and fabricate a threaded nut to plug off the passenger side header EGR bung.
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Old June 17th, 2010, 05:38 PM   #3
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Originally Posted by Bullitt95 View Post
Just get rid of the smog pump with associated piping/valves and plug off the vacuum lines. You can do the same with the EGR valve and pipe to header but you'll need an EGR eliminator simulator to prevent the "Check Engine" light from coming on. Belt size will probably be about 80" but it's only by trial and error where you'll find the exact size.
You could go for long tubes (more power) instead of shorty headers, and fabricate a threaded nut to plug off the passenger side header EGR bung.
Everything that he just said.

I don't have underdrives, and mine took an 82.7" belt, so like Bullitt said yours will be trial by error. You could also try the string measuring method too. I didn't block off my EGR, as my long tubes have an EGR bung.

You will also need to plug the holes in the back of the heads.
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Old June 18th, 2010, 05:09 AM   #4
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9/16 bolt by 1/2 or 3/4 long is what I used to plug back of heads when I ran e-7's, was not exact thread match, but screwed in easy and never leaked
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Old June 18th, 2010, 09:45 AM   #5
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If you've taken the car apart already, the damage is done. I'm no tree hugger, but
the air pump mearly pumps cold air onto unburnt hydrocarbons (gasoline) and burns them. This reduces air pollution. The power loss caused by the air pump is negligable at any RPM. You would get more power from your engine by deleting the power steering pump. This is not a very popular option. Anyway, if your hell bent on your project,
try Gates belt # K060795 (6PK2020) or Goodyear belt # 4060795. Good luck...anfojo
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Old June 20th, 2010, 11:56 PM   #6
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My new headers don't have the provision for the Emissions on them.. My heads are the GT40P's and they don't have the holes in the back of the heads either.. Sorry about the emissons
Tom
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