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Jameel's Avatar
 
Join Date: Oct 2015
Location: Iowa
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Quote:
Originally Posted by thefaculty View Post
I agree - perhaps my parts list for this project is wrong. This is what I have been told I would need but it does feel expensive. Can you let me know if this looks correct?

Left hot air duct, 930.106.321.02,
4 plastic nuts, 999.591.592.40,
2 rubber plugs, 999.703.044.50,
Right hot air duct, 911.106.327.00,
Right engine cover plate, 911.106.036.00,
Right engine cover, 911.106.827.00,
Right air duct support, 911.106.331.00,
I did a pretty thorough post on backdating the heat on a '79 SC and an '83 SC. The '79 we also deleted the A/C and smog pump, but kept the A/C on the '83, so you can compare. Definitely remove the hoses, they are long and weigh a lot. We also removed every A/C component from the '79, there is no remnant of it anywhere. It all adds up. These cars are spec'd pretty much exactly the same (sunroof, power windows, in other words, heavy stuff) and the '79 weighs 74 pounds less than the '83.

Here's the post. Backdated Heat Tech Article

And here's a pic of the '79 before we did the work, and after.
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Old 06-16-2018, 06:42 AM
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1983 SC Coupe Chiffon White
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Old 06-16-2018, 06:44 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #42 (permalink)
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Jameel- great backdate post, it's been a huge help. I had all the major pieces but the part numbers for the fasteners made life easier.

I removed the last of my AC components last week. Looks like a total of almost 70lbs.
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Last edited by QueWhy; 06-16-2018 at 08:02 AM..
Old 06-16-2018, 07:57 AM
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Quote:
Originally Posted by Bob Kontak View Post
If you are considering the backdate heater setup there is a downside in that the heat is blown with the engine fan. Cruising no issue. Get into a peppy run and forget to turn down the heater and your shoes melt.

That electric blower fan does a pretty good job despite it's appearance with the hoses.
So, I checked out the electric blower fan. The airflow is anemic by itself, especially so to the passenger side where it would be most needed in my case, so it's an assist to the engine fan. Probably going to delete it.
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Old 07-10-2018, 11:52 AM
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the reason for the blower was to defrost / defog the windshield at idle ( safety add ) when the car was cold as there was not enough pushed. I really doubt its needed.

Mine is there but is gutted ( I actually like the original look and prefer it over backdated look )
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Old 07-11-2018, 07:31 AM
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Personally, I like A/C...In a 911 or a Ford. From an old thread:
Quote:
Originally Posted by fintstone View Post
This article addresses weight. The author built an durable, attractive, modern, working system that weighed @ 70 lbs from readily available used and aftermarket parts.
Obligatory 32F AC vent image
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Old 07-12-2018, 03:27 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #46 (permalink)
 
82 911 SC - Ancora Imparo
 
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OP, were these the parts you purchased? Why are there so many parts for the right side? For some reason I thought it was just one duct for each side.


Quote:
Originally Posted by thefaculty View Post
I agree - perhaps my parts list for this project is wrong. This is what I have been told I would need but it does feel expensive. Can you let me know if this looks correct?

Left hot air duct, 930.106.321.02,
4 plastic nuts, 999.591.592.40,
2 rubber plugs, 999.703.044.50,
Right hot air duct, 911.106.327.00,
Right engine cover plate, 911.106.036.00,
Right engine cover, 911.106.827.00,
Right air duct support, 911.106.331.00,
Old 07-20-2018, 06:21 PM
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'79 OUTLAW
 
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Quote:
Originally Posted by Gretz View Post
OP, were these the parts you purchased? Why are there so many parts for the right side? For some reason I thought it was just one duct for each side.
No - After a lot of research I realized that these were the parts you needed if you wanted to literally build the ducts from scratch which I found from an old thread here from a while back. The only parts you need are:
  • Right Side Heater Duct, 911 1965-74 1975-89 for backdated heater NOTE: Will require modification for cars with air conditioning, 7-1/2"
  • Left Side Heater Duct, 911 1965-74 1975-89 for backdated heater 11-1/8"

The ducts cost me $195.95 from our host. You'll also need some 2.5" sceet hosing which I got from Aircraft Spruce. I got 4' and had about a foot left over. I wouldn't buy 3' though - allow yourself a little room for error. All in all the whole job cost about $250 and took about 1.5hrs if you were to do in one sitting (which I didn't because of work - I was literally pulling parts in between client sessions!)

You can check it out on the build thread I started recently for my '79 SC: '79 OUTLAW // Build Thread

Hope that helps!!
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Last edited by thefaculty; 07-20-2018 at 06:30 PM..
Old 07-20-2018, 06:26 PM
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82 911 SC - Ancora Imparo
 
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Perfect- thanks very much. No additional hardware/bolts etc? Just the ducts and the SCEET?
Old 07-20-2018, 07:46 PM
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TF... sent you PM.
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Current: '80 Silver Targa w /'85 3.2, '79 Anthracite 930
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Old 07-21-2018, 04:02 AM
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A/C yes or no

Hi The faculty,
I would leave it for about six months to a year,then make a decision.
funny over time some times you change your thinking, and you never know
you may decide to sell it later to upgrade, and to some one that would love it to have its original A/C, that lives in a warmer area.
Pmax i know what you mean Nor Cal,Bay area, but you only have to drive back
towards Vallejo 30 miles ,and the temp goes up 25 - 30 degress
i did that for years, 15 years ago. regards.
Old 07-21-2018, 04:14 AM
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Does not cost that much to repair an original system. I converted to 134, bought rebuilt compressor on eBay, new dryer, expansion valve from pelican, gauges and pump from harbor freight , 134 from Walmart
Ester oil from auto zone. Cost me about $400 to get my original 85 Carrera up and running for two years now. Not great but 55 degrees average on a warm San Diego day. Does not cost $2000 to make these systems work.
Old 07-21-2018, 07:33 AM
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Oh, also bought new thermostat switch from griff. Got it all going for cheap!!! I also bought an oring kit and replaced those as I went along. I just did some math, I think was closer to $450. Still not bad.
Old 07-21-2018, 07:42 AM
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Of course to depends on how you define "working". 55 degrees is about normal for the factory air...but it is worthless/useless for very many people. Vent temps over the mid 30's will not result in a comfortable car in the summer in much of the US. The low amount of airflow/poor vents, large amount of glass (especially in a targa) makes it useless. I can get 55 agree vent temps from my original, factory system in my '89 any time...but it is useless. It will not even cool a car down in the shade/at night when the temps and humidity is high. The 32 degrees in my targa with a full cup solution from Griffiths did the job and cooled the car down (even then, it could have done better...was not comparable to a modern system.
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Old 07-21-2018, 08:02 AM
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If I was going to spend $45,000 on a 911 I would want the AC installed and working. Even with our crappy AC systems.
Old 07-21-2018, 12:12 PM
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