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Discussion Starter #1
I'm topping off my rebuilt motor with GT40 heads and an Edelbrock Performer upper and lower intake, and I'm confused about the water passages through the intake and EGR spacer. On my old stock lower intake, there's a temp sending unit in one of the ports, a hose fitting in one of the others, and one is plugged. In the Performer lower intake that I bought recently, there are two temp sending units and a plug (one of the temp sending units is being used as a plug apparently). It looks like they weren't running water through the EGR spacer. What does feeding the EGR spacer with water DO, exactly? I don't think it's trying to cool the intake with hot coolant... What should I do with this? Should I run the coolant hoses and make the new intake match my stock setup, or should I plug the input and output lines on the spacer?

Second question, where is the orifice tube in the A/C system? I bought the replacement, and I can't figure out where it goes!

Thanks to all of you who know a heck of a lot more than me! :worship
 

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heres the how to out of alldata hopefully it helps
Line & Tube Assembly Replacement


  1. Discharge refrigerant from system.
  2. Disconnect refrigerant line at condenser outlet connection.
  3. Disconnect refrigerant line at the tube-O end using a wrench on each side of tube-O fittings and remove line from vehicle.
  4. Route new refrigerant line, and integral fixed orifice tube, with the protective caps installed.
  5. Remove protective caps and connect new refrigerant line into the system using new O-rings lubricated with refrigerant oil.
  6. Leak test, evacuate and charge refrigerant system.

  1. Disconnect refrigerant line at the tube-O end using a wrench on each side of tube-O fittings and remove line from vehicle.
  2. Route new refrigerant line, and integral fixed orifice tube, with the protective caps installed.
  3. Remove protective caps and connect new refrigerant line into the system using new O-rings lubricated with refrigerant oil.
  4. Leak test, evacuate and charge refrigerant system.
Orifice Tube Replacement



  1. Remove refrigerant line from vehicle as described under ``Line & Tube Assembly Replacement.''
  2. Identify location of orifice tube by three indented notches or a circular depression on metal portion of tube.
  3. Note angular position of ends of liquid line for assembly reference.
  4. Cut a 2.5 inch section from tube at orifice tube location. Do not cut any closer than one inch from start of bend in tube.
  5. Flush out two lengths of refrigerant line to remove any contaminants.
  6. Lubricate O-rings with clean refrigerant oil, then assemble orifice tube kit to line. Ensure flow direction arrow points toward evaporator end of line and taper of compression rings is toward compression nut. When properly assembled, the inlet tube is positioned against the orifice tube tabs.
  7. With tube hex nut secured in a vise, torque compression nuts to 65-70 ft. lbs.
  8. Install liquid line using new lubricated O-rings.
  9. Leak test, evacuate and charge refrigerant system.
 

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Wow, I wasn't expecting that. I thought since they sold just the orifice tube at discount, that it would be a normal fitting that could be removed, insert the orifice tube, and bam, there you go.

The instructions aren't so clear. Can anyone expand on the directions and tell me how to do this right? I'm not sure how to reconnect the A/C hose after I cut the orifice tube out, and not have it leak.
 
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