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Okay Mark, just put the package together with some instructions, start marketing, and sell the darn thing. For those in the warm (HOT!!!) weather regions, it will be a no brainer to purchase the upgrade as a kit. Especially coming from you, we know it would be a great end product.
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Old 03-18-2005, 09:28 AM
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Just got off the phone with Ron from Rennaire (ProCooler), what a great guy! Didn't try to sell me anything, just willing to talk 911 AC.

Mark, You'll have to keep us posted on how well the AC works when things get hot and humid.
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Old 03-18-2005, 12:18 PM
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mark,
Does your system also include the front condenser/fan assembly?
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Old 03-18-2005, 10:29 PM
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Ron is a great guy. He's been very helpful with me.

Mark: Is the evaporator an exact drop-in replacement? In other words, do the hoses line up? Does the temp control bulb fit correctly? Does it come with the tarry tape?

Nice work! Congrats!
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Old 03-18-2005, 11:25 PM
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Ron,
Yes,
My system has both frnt and rear factory condesors.

Scott,
The new evaperator is a direct replacement - just the more efficient serpentine tube configuration. The hoses line up perfectly. It's really a very easy/straightforward replacement. Ron is including a new expansion valve with the evaporator.


Mark
Old 03-19-2005, 04:33 AM
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Quote:
Originally posted by 911pcars
Mark,
Why the prop rod? Did you add anything heavier to the lid or is it just a worn gas shock? I've got a solution in case you're interested.
Sherwood
www.seinesystems.com
Sherwood,
I may be interested in your solution...Could you email direct or PM me?
Thanks,
Paul
pakoury@sbcglobal.net
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Old 03-19-2005, 08:38 AM
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Quote:
Originally posted by Tyson Schmidt
One of the most important upgrades we did to Jack Olsen's car to get the 37 degree vent temps on high fan speed, was to update the evaporator to the '86 and later unit. I'm very interested in that unit you've got there.
How are the earlier and later evaps different?

I have the later evap, but the 229 price certainly could fit on the "while your in there" list. I'm adding 993 condensor up front so it would be nice to upgrade everything necessary to check this A/C upgrade completely off the project list.
Old 03-19-2005, 11:29 AM
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Quote:
Originally posted by 89turbocabmike
How are the earlier and later evaps different?

I have the later evap, but the 229 price certainly could fit on the "while your in there" list. I'm adding 993 condensor up front so it would be nice to upgrade everything necessary to check this A/C upgrade completely off the project list.
Mike,
That's the setup that I want to eventually go to. I think going to the 993 condensor would allow removal of both front and rear stock units.
Old 03-19-2005, 12:39 PM
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Okay...what's the collective aopion on which would be the best/first upgrade?
Underbelly condensor
New Evaporator like Marks
Pro Cooler
I switched to HC12 (?) last summer and my ac's working pretty good...unless the car sits in the sun for too long.
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Old 03-19-2005, 01:03 PM
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Quote:
Originally posted by Mark Wilson
Mike,
That's the setup that I want to eventually go to. I think going to the 993 condensor would allow removal of both front and rear stock units.
That would be ideal Mark.

I guess that's what a 964/993 runs I'm just paranoid about enough condensor area as that is always harped on in every thread I've read over the years. I was considering eliminating my small turbo decklid condensor in future preparation for a full IC to replace the kokeln. The front factory one seems quite small but does have a fan.

So perhaps the plan would be this:

1. 993 condensor/fan (front and rear stock eliminated)
2. Procooler
3. Upgraded evap.
4. New hoses
5. Griffith vent

It would certainly tidy up and simplify things.
Old 03-19-2005, 01:24 PM
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Mark, I'm envious as I have pretty much the same set-up in my '88. Procooler, fancy evap and stock condensors. Did the charge yesterday and only got down to 41 degrees with 82 or so ambient. I'm happy but every degree counts in Houston. Do you have any data on your pressures and how many ounces of 134a were used? Thanks, Ken
Old 03-27-2005, 08:28 PM
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Mark,

So has the A/C working out?
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Old 04-09-2005, 05:35 PM
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I wanna see a measurement in traffic when it's over 90 degrees outside, not in the shade of your garage.
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Old 04-09-2005, 06:06 PM
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Mark,

Anything new on the system?

JoeA
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Old 04-23-2005, 08:30 AM
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Hi Joe,
Temps around 80 and sunny yesterday. Interior got to 110 after sittinf outside. Vent temps in mid 30's and very comfortable in the car. I'm really pleased with the results.
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Old 04-23-2005, 12:09 PM
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Just curious, if vent temperatures are in the low 30's just with the Procooler and the new Evaporator, is there any further reason to look at condensor upgrades etc?

Simon
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Old 04-27-2005, 06:54 AM
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Dr Wong: Condensors, not so much. But definitly Barrier Hoses!!!
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Old 04-27-2005, 07:06 AM
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FL Ted,

Ah yes, I keep forgetting that cars earlier than my '85 don't have the barrier hoses.
That also reminds me that my electrician mentioned that one vital step for long lasting AC was to totally flush out the system of old gases. Apparently if there is any mixing of the different types of AC gas then over a period as short as a month they react and become inert.

Simon
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Old 04-27-2005, 06:29 PM
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I have a 1985 Carrera Cab which had the A/C serviced last summer. The system which is factory worked great (38 degrees at vent) for three weeks and then just hot air. My technician said he could not detect and leaks. I am assuming he checked the obvious parts, compressor, codenser etc. My question is are there sections of hose that are not accessible for testing for leaks. The A/C worked sooo well I have to believe there is a leak which can't be reached. What would the solution be? New Barrier hoses through out the vehicle and is this a difficult job if anyone knows. Thanks Mike
Old 10-06-2010, 05:26 PM
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Mike,

After checking for leaks, did he put more freon in and did it last another 3 weeks? If he added a leak detector and didn't find leaks at the main components (hoses, evaporator, compressor, condensers, dryer) then it's probably the hoses. Did he convert from R12 to R134a freon? As you mentioned and in the postings above, our older 911s have non barrier hoses that leak R12 slowly and will leak R134a faster but 3 weeks is much faster than I've experienced. There is a lot of hose to follow from front to back but you should be able to view it all with a little work.
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Old 10-06-2010, 07:27 PM
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