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> Pics of 914-6 with AC, Soon to be history
Porsche Rescue
post Aug 29 2003, 02:41 PM
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Brad asked for some pics of the AC I am removing from my latest project, 1970 914-6 bought on Ebay from SoCal.
First I have seen on a six but looks much like the 4 systems I've seen. Firewall was notched for the compressor but it is a pretty good job. Here it is.


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Porsche Rescue
post Aug 29 2003, 02:44 PM
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Whoever installed removed the fresh air fan box, cut a hole below it (don't understand why) and plugged the fresh air grill on the cowl. Fresh air is fed to the underdash unit by two tubes, one in each front wheel well (Why not use the original fresh air feed, less holes for me to plug?).


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Porsche Rescue
post Aug 29 2003, 02:45 PM
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Here is the underdash unit, DPD.


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Porsche Rescue
post Aug 29 2003, 02:46 PM
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Then we have the real marvel, an oil cooler plumbed with copper sitting on top of the condenser.


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Porsche Rescue
post Aug 29 2003, 02:47 PM
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Only good thing about this installation is the hole in the front trunk floor, usually they are larger!


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tryan
post Aug 29 2003, 02:52 PM
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did the pilgrims use that compressor on the mayflower?
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URY914
post Aug 29 2003, 02:57 PM
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And the worst type of oil cooler to use. Those tubes do just about nothing to cool the oil.

Paul
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fiid
post Aug 29 2003, 03:05 PM
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Is it bad to use copper for plumbing automotive stuff - I am wondering about what I should use for water pipes for my watercooled conversion.

Fiid.
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Steve
post Aug 29 2003, 03:29 PM
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Well Brad...
So far it looks like we'll be notching our firewalls.

Steve
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ArtechnikA
post Aug 29 2003, 03:39 PM
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QUOTE(fiid @ Aug 29 2003, 01:05 PM)
Is it bad to use copper for plumbing automotive stuff - I am wondering about what I should use for water pipes for my watercooled conversion.

people do it. it's probably not a big deal when using substantial-size tubes for water.
the issue with copper (and aluminum) is that it work-hardens from the vibration flexing and cracks and breaks. little tubes can vibrate and flex; big tubes - not nearly as likely.

i'd think (but have no first-hand knowledge - so this is just armchair engineering...) that using lots of Adell clamps placed pretty close together would reduce and damp vibration.

the big-buck solution is AN-32 braided-steel line but i don't think very many people take that path. fewer after pricing it first :-) ...
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tryan
post Aug 29 2003, 03:52 PM
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saden and nippondennso compressors are mucho smaller than that york piston pump. you might not have to notch if you can modify the mount to get the compressor closer to the motor.
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ein 6er
post Aug 29 2003, 05:45 PM
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i have seen a foto of a 6 with a/c and the firewall was not cut. but i don't know what type of compressor it was.
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Steve
post Aug 29 2003, 07:25 PM
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The biggest problem with an air conditioned six is the AC compressor pulley on the crank.
The second belt is way to far forward.
I have heard of people using the non airconditioned pulley and using one belt to drive the compressor and fan.
I have not seen any pictures or details.

Steve
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Brad Roberts
post Aug 30 2003, 12:20 AM
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Steve.. what about the single belt serpentine conversion ??


The car I'm doing it on is a factory six.. I'll know in a few weeks whether or not it clears everything.


Thanks for the pics Jim !!


And ..yes .. If I have to I'll go to a Suzuki Samari style compressor (real tiny) but is effecient enough to cool a 914 cabin (to keep from notching the firewall)

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Brad Roberts
post Aug 30 2003, 12:22 AM
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Steve..

what about running it off one of the camshaft ala powersteering pump for 3.6 ??

Interesting thought...



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ChrisReale
post Aug 30 2003, 12:22 AM
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Just roll the windows down and save yourself the headache (IMG:style_emoticons/default/laugh.gif) Although, when I was driving back from a Portland AX and it was anoput 98 degrees out, and I had two hot VRacers on the passenger side seat, AC woulda been proper
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Brad Roberts
post Aug 30 2003, 12:23 AM
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When your 45-50 years old and have 70k to drop on a 914... you'll want AC.


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ChrisReale
post Aug 30 2003, 12:24 AM
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QUOTE(Brad Roberts @ Aug 29 2003, 11:23 PM)
When your 45-50 years old and have 70k to drop on a 914... you'll want AC.


B

Good point (IMG:style_emoticons/default/ohmy.gif)
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Mike9142.0
post Aug 30 2003, 12:53 AM
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A/C off the cam? That sounds like a lot of load for the cam when the clutch locks in.
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Brad Roberts
post Aug 30 2003, 01:03 AM
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Actually Mike... these high effiency compressors barely draw 4-5 HP (unlike the old one pictured that robbed 8-10hp) It was just a thought.. I know the power steering pumps carry a decent load (they have to pump fluid 13 feet to and from the front of a 993). I wouldnt swear to it.. but I think the 3.6 has a extra bearing or some kind of extra support for the power steering pump.


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