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Jim78

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    Lake Monticello, VA

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  • My Avanti
    1978 RQB-2758

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  1. On my '78, the hose is connected to the fitting on the center of the top of the charcoal canister.
  2. You might find the tint shops less afraid of the rear window if you were to remove the rear shelf (not a big deal). The additional access through the trunk would make the installation a lot easier.
  3. My '78 doesn't have cruise control, so I'm guessing here. Typically, the cruise control is cancelled by application of the brake, via a second switch on the brake pedal. It almost sounds like your CC is somehow wired to the stoplight switch, and there is feedback when the turn signal is on. Does your pedal have a second switch, or a switch with two sets of contacts? Could it be possible that someone has the wires mixed up? FWIW, there is a sketch of the circuit on Bob Johnstone's page. https://studebaker-info.org/Tech/Diagrams/AEC/aec.html
  4. The temperature out of the evaporator will vary with the ambient temperature. During the charging process, we were seeing a temperature drop of about 30-35 degrees.
  5. I am running an S6 from Old Air Products with R-134a in my '78. Otherwise, the rest of the system is still factory stock, which was originally R12. That said, the system cools very well. I am no expert in A/C, but I am told that unlike the R12, the R134a is very sensitive to having the correct charge. Too little or too much is bad. Unfortunately, since it is a conversion, there is no sticker under the hood that would tell us the "proper" charge. The shop that charged mine has the latest equipment and a very competent tech. He took his time and charged the system in small increments letting it stabilize, checking the pressures and the temperature of the evaporator along the way. The whole process took about an hour, but the results were very good. Might it be possible that there may be a problem with your expansion valve? Again, I'm no expert, but wouldn't a restricted expansion valve cause the high pressure differential and poor cooling that you describe?
  6. Yep, that's a factory butcher job. My '78 is the same way. I suppose if one were looking for true "authenticity", he should hack his frame. 🙄 Others might see this as a good opportunity to lose the cat entirely and use straight dual pipes. The more environmentally conscious owner might consider two in-line aftermarket converters. https://www.jegs.com/webapp/wcs/stores/servlet/SearchResultsPageCmd?q=catalytic+converter+universal&storeId=10001&catalogId=10002&langId=-1
  7. As a quick and dirty alternative, I purchased a bluetooth adapter that simply plugs into the lighter socket. It converts the bluetooth signal to a chosen FM frequency on your existing radio. For less than $20 and no labor I can listen to my tunes from my phone. https://www.amazon.com/gp/product/B07V27CYPT/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
  8. To avoid the issue with tightening mounting nuts under the dash, use "well-nuts" like those that hold the mirrors to the door skins. https://www.amazon.com/RUBBER-NUT-THREADED-INSERTS-THREAD-SIZE-030-227/dp/B015EVZ6IK/ref=sr_1_11?crid=35TS2RX1C1EYN&keywords=well+nuts+10-32&qid=1645367369&sprefix=well+nuts%2Caps%2C244&sr=8-11
  9. I suppose that another option is to remove the stacks of spacers between the body and frame that were used eliminate the rake in the first place.
  10. I would guess that the DEC 1989 might be a date when the compressor was rebuilt. I would run the system with the dye until it leaks down again. Then park the car in a very dark garage (or at night), with the engine off. Use a good ultraviolet light to check all over the system, including the condenser behind the grille. You should see a fluorescent residue where the freon is leaking.
  11. Kodjo, Recharge the system adding some compatible A/C fluorescent dye. Then leak check with a UV "black" light in a dark garage. Odds are that it is the compressor that's leaking, but better to be sure before you start spending for parts. Which model compressor is on your system?
  12. The dryer that I used (Amazon link above) has the correct flare fittings for the Avanti, no adapters required. Yes, any adapter is a future leak.
  13. That would be the location for the drier. These are available from several sources. I found mine on Amazon. https://www.amazon.com/gp/product/B003R3VKI8/ref=ox_sc_act_title_1?smid=ATVPDKIKX0DER&psc=1 If your system uses a binary pressure switch in the compressor clutch circuit, the switch would be ordered separately. My '78 did not have one, but I added it to protect the compressor.
  14. Don Simmons at Silvertone Exhaust Systems has been doing Studebaker and Avanti stainless exhaust systems for many years. I used his system on my '78 to replace the factory cat system with plain old duals. The quality is excellent, and he does offer 2-1/2" if you are so inclined. Personally, I feel that the 2" is more than adequate for an L48. While his ads don't list '75-'83 because they have the cat system, he was able to provide the proper exhaust pipes (essentially a '65-'74 system) once we identified which manifolds were on my engine. I would suggest that you give him a call.
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