International Full Size Jeep Association
Home Forums Reader's Rigs Tech Library Trail Stories FSJ-List
International Full Size Jeep Association  

Go Back   International Full Size Jeep Association > Tire Kickin' > General FSJ Tech

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 06-29-2011, 06:49 PM
deadironrat deadironrat is offline
Grease Monkey
 
Join Date: Mar 25, 2008
Location: Quinlan TX
Posts: 382
AC condenser upgrade

I'm in the process of fixing the AC on my recently acquired Wagoneer and I noticed the condenser looks like an over sized transmission cooler (tube and fin type). It seems painfully inadequate compared to the condensers you see on newer vehicles. Being that I live in Texas and it gets quite hot I'm interested in if anyone has ever upgraded to a newer style condenser? It seems like it should be fairly straight forward and would probably provide a huge boost to your AC.

Has anyone ever done this? If so what vehicle did the donor condenser come out of? And did you see a drop in inside air temperature?
__________________
Jacob Z

1984 Jeep Grand Wagoneer, work in progress
Reply With Quote
  #2  
Old 06-29-2011, 07:11 PM
deadironrat deadironrat is offline
Grease Monkey
 
Join Date: Mar 25, 2008
Location: Quinlan TX
Posts: 382
What about upgrading to something like this?

http://cgi.ebay.com/ebaymotors/Universal-Parallel-Flow-Condenser-14-1-4-x-25-_W0QQcmdZViewItemQQhashZitem3a66cd7c5aQQitemZ25083 2845914QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccesso ries#ht_1786wt_1165

It would fit in the same spot as the stock condenser and the tubes are on the correct side. Everything I've looked at says that parallel are hands down superior to the old tube and fin the Jeep used. Any opinions?
__________________
Jacob Z

1984 Jeep Grand Wagoneer, work in progress
Reply With Quote
  #3  
Old 06-29-2011, 09:22 PM
JeepinPete's Avatar
JeepinPete JeepinPete is offline
Bleedin' Gasoline
 
Join Date: Dec 09, 2003
Location: Quakertown, PA
Posts: 2,190
You are only looking at half the system. The stock condenser is plenty adequate for the stock evaporator. For a higher capacity condenser to do you any good, you will have to increase the capacity of the evaporator or push more air through what you have.
__________________
Pete

'55 Willys Wagon, the original FSJ
Sitting on a '77 Cherokee frame, Dodge D60's
Isuzu 6BD1, NV4500, NP241
Reply With Quote
  #4  
Old 06-29-2011, 09:29 PM
asphaltrockdweller's Avatar
asphaltrockdweller asphaltrockdweller is offline
350 Buick
 
Join Date: Jul 09, 2009
Posts: 1,165
Quote:
Originally Posted by JeepinPete
You are only looking at half the system. The stock condenser is plenty adequate for the stock evaporator. For a higher capacity condenser to do you any good, you will have to increase the capacity of the evaporator or push more air through what you have.

Yeap!

What he said.
The condenser is fairly inexpensive in comparison to the evaporator.
I am doing an upgrade on my AC system, and found this out last week. To upgrade the evap, you are looking at 300-400 just for that.
__________________
(Ristow) fram....that deserves a ratchet upside the head.
Reply With Quote
  #5  
Old 06-29-2011, 09:36 PM
deadironrat deadironrat is offline
Grease Monkey
 
Join Date: Mar 25, 2008
Location: Quinlan TX
Posts: 382
I agree it's only half the system. But the stock evaporator doesn't seem quite as inadequate compared to the stock condenser. My thinking is if my evaporator isn't anywhere near freezing up (which mine isn't) then there is probably room for improvement.

Maybe it's just wishful thinking that this might help combat the Texas heat a little. But I certainly think it's worth a shot while I have the system apart.
__________________
Jacob Z

1984 Jeep Grand Wagoneer, work in progress
Reply With Quote
  #6  
Old 06-29-2011, 09:37 PM
deadironrat deadironrat is offline
Grease Monkey
 
Join Date: Mar 25, 2008
Location: Quinlan TX
Posts: 382
Has anyone had any luck flushing their AC systems? Or perhaps know why you can't flush an expansion valve??
__________________
Jacob Z

1984 Jeep Grand Wagoneer, work in progress
Reply With Quote
  #7  
Old 06-29-2011, 09:41 PM
asphaltrockdweller's Avatar
asphaltrockdweller asphaltrockdweller is offline
350 Buick
 
Join Date: Jul 09, 2009
Posts: 1,165
Quote:
Originally Posted by deadironrat
Has anyone had any luck flushing their AC systems? Or perhaps know why you can't flush an expansion valve??

Are you going to change over to R134?

If so you should change that. Expansion valves are not that expensive anyways.
__________________
(Ristow) fram....that deserves a ratchet upside the head.
Reply With Quote
  #8  
Old 06-29-2011, 09:45 PM
deadironrat deadironrat is offline
Grease Monkey
 
Join Date: Mar 25, 2008
Location: Quinlan TX
Posts: 382
Quote:
Originally Posted by asphaltrockdweller
Are you going to change over to R134?

If so you should change that. Expansion valves are not that expensive anyways.


I already have a new one. I was just curious. I can understand not flushing an orifice tube but the expansion valve seems strange. Since as far as I know it has no filter inside of it.
__________________
Jacob Z

1984 Jeep Grand Wagoneer, work in progress
Reply With Quote
  #9  
Old 06-29-2011, 09:56 PM
deadironrat deadironrat is offline
Grease Monkey
 
Join Date: Mar 25, 2008
Location: Quinlan TX
Posts: 382
I stand corrected, there actually is a little metal screen down inside the expansion valve. At least there is in the old one I removed.
__________________
Jacob Z

1984 Jeep Grand Wagoneer, work in progress
Reply With Quote
  #10  
Old 06-29-2011, 11:19 PM
FSJunkie's Avatar
FSJunkie FSJunkie is offline
The Nigel Tufnel of the FSJ world.
 
Join Date: Jan 09, 2011
Location: Not The Hot Part, Arizona
Posts: 4,004
If you replaced the condenser and increased the system's efficency so that it suppied cooler refrigerant to the evaporator, it would overpower the inefficent evaporator and freeze it up. Then you have no cooling.
__________________
'72 Jeep Wagoneer Custom, 360 V8

I love how arguements end as soon as Ristow comments. Ristow is right...again.
Reply With Quote
  #11  
Old 06-30-2011, 03:20 AM
Thomas792's Avatar
Thomas792 Thomas792 is offline
327 Rambler
 
Join Date: Sep 16, 2007
Location: Woodbridge, VA
Posts: 622
Looking at that condenser I'm not sure it will work. I've been mocking up one based on dimensions on another site. The problem with the one in the link you provided is that the fitting is too close to the top. In my mock up I can put a 14 x 26 condenser in and the fittings are 2" from the top and bottom. At the top of the radiator support it dips down a bit on each side which is why the fitting 2" from the top will work well.
__________________
1974 J10 (401, Th400, Q-Trac, D44s, 28" tires)
Mrs Tickity - 1988 GW (360, 727, 229, D44s, 32" tires)
Reply With Quote
  #12  
Old 06-30-2011, 07:47 AM
Heavy_Metal_Thunder_81's Avatar
Heavy_Metal_Thunder_81 Heavy_Metal_Thunder_81 is offline
Cherokee Outlaw
 
Join Date: Jan 10, 2006
Location: Haze Gray
Posts: 7,267
Quote:
Originally Posted by asphaltrockdweller
To upgrade the evap, you are looking at 300-400 just for that.
Autozone has evaporators for ~$100, Napa and O'Reily has them for ~$160. The condenser I can only seem to find at one place online for ~$300+
__________________
-Jonny B.
1979 Cherokee Golden Eagle - UNDER CONSTRUCTION
7" Alcan springs, BJ's HD shackles - 35x12.5x15 BFG Mud Terrains
AMC 401 - Pro-FLo 4 FI
NV4500/NWF BB/NP205 - Triple Stick'd
F D44 - 4.10, Eaton E-Locker
R M23 - 4.10, Detroit Locker

1979 Cherokee Chief - Parts
1979 Cherokee Chief - Parts
1979 Wagoneer - Sold
1981 Cherokee Chief - Cubed
Reply With Quote
  #13  
Old 06-30-2011, 08:10 AM
deadironrat deadironrat is offline
Grease Monkey
 
Join Date: Mar 25, 2008
Location: Quinlan TX
Posts: 382
Buy a universal one like i posted a link too. Far more efficient and less then $70.
__________________
Jacob Z

1984 Jeep Grand Wagoneer, work in progress
Reply With Quote
  #14  
Old 06-30-2011, 10:47 AM
GW Fisherman's Avatar
GW Fisherman GW Fisherman is offline
327 Rambler
 
Join Date: Mar 28, 2005
Location: Austin Texas USA
Posts: 728
Quote:
Originally Posted by deadironrat
I'm in the process of fixing the AC on my recently acquired Wagoneer and I noticed the condenser looks like an over sized transmission cooler (tube and fin type). It seems painfully inadequate compared to the condensers you see on newer vehicles. Being that I live in Texas and it gets quite hot I'm interested in if anyone has ever upgraded to a newer style condenser? It seems like it should be fairly straight forward and would probably provide a huge boost to your AC.

Has anyone ever done this? If so what vehicle did the donor condenser come out of? And did you see a drop in inside air temperature?

How do you know what you already have is not adequate? The stock A/C works just fine as it was engineered. You would be throwing your money away unless you reengineered the whole thing. Your compressor only moves so much freon. Unless you replace everything matched to handle the volume of freon you can move through it, not gonna make a difference and may even hinder what you are after. That is why compressors, coils, metering devices, fan motors are matched for different tonnage.

Spend the money on insulating the roof.
__________________
2001 Subaru Outback 3.0 - Mamas assault vehicle
1989 Grand Wagoneer - DD and Boat Hauler
1985 Mercury 115hp inline 6 outboard
1989 Champion 184DCB - Bass boat

Last edited by GW Fisherman : 06-30-2011 at 10:50 AM.
Reply With Quote
  #15  
Old 06-30-2011, 10:53 AM
babywag's Avatar
babywag babywag is offline
out of order
 
Join Date: Jun 08, 2005
Location: Land of froot loops and cukcoo-nuts, CA
Posts: 9,682
Just refurb the stock unit. They work just fine.
No real need to "upgrade" the condenser. I just bought a stock type replacement in '05 when I redid my system.
Even in a high desert setting mine pumps out ice cold

Depending on ambient temp, etc. I get 34*-44* out of the driver's side vent (furthest vent from the evap.)

Still running R-12, and it works great.
__________________
Tony
Reply With Quote
  #16  
Old 06-30-2011, 11:26 AM
deadironrat deadironrat is offline
Grease Monkey
 
Join Date: Mar 25, 2008
Location: Quinlan TX
Posts: 382
Quote:
Originally Posted by GW Fisherman
How do you know what you already have is not adequate? The stock A/C works just fine as it was engineered. You would be throwing your money away unless you reengineered the whole thing. Your compressor only moves so much freon. Unless you replace everything matched to handle the volume of freon you can move through it, not gonna make a difference and may even hinder what you are after. That is why compressors, coils, metering devices, fan motors are matched for different tonnage.

Spend the money on insulating the roof.


We are talking about the same company that couldn't put on body panels straight and thought steel oil pump gears in an aluminum housing was a good idea right? Im not trying to gain increased flow but rather increased cooling via a better designed condensed. It seems to me that upgrading a condenser is a lot like upgrading a radiator, it might not be necessary but i wouldn't think it could hurt anything.


Maybe Im just thinking about this all wrong. But while I've got it all apart i am going to give it a shot. If it gives me problems I'll just put the stock condensed back in.
__________________
Jacob Z

1984 Jeep Grand Wagoneer, work in progress
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Universal Parallel Flow Condenser Installed (Warning- LONG and lots of pics!) Walt General FSJ Tech 10 06-16-2014 09:45 AM
Need for AC condenser paint Rod2 General FSJ Tech 1 08-16-2007 07:25 AM
AC Condenser Transmission Fluid Cooler 8379qtj10 General FSJ Tech 2 01-18-2007 12:27 PM
ac condenser and drier guy General FSJ Tech 2 07-05-2005 06:38 AM
GM HEI vs. Motorcraft/Duraspark ignitions (very long) Sycho15 General FSJ Tech 11 09-06-2002 07:46 AM


All times are GMT -6. The time now is 03:40 AM.


Powered by vBulletin Version 3.5.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
corner corner