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Username Post: A/C condenser cooling        (Topic#355135)
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
02-07-19 08:50 AM - Post#2759286    

Has anyone tried using a pusher or puller fan on a condenser?
I’m considering adding one. The gap between condenser and radiator is very small. A pusher maybe the only option.

Two issues with my truck. First, mine has an 88-91 front end. Second, it still runs an R4 compressor. Once the compressor fails, an upgrade is planned. A SANDEN HD compressor will replace the R4. The LS dual Camero fans cool the ZZ4 to keep temps between 190 and 205. The ideal ZZ4 operating temp is 195. The temp is too high for a/c. I do need to check R134 pressures. A trinary switch does cycle fans when needed. A165 AMP alternator powers everything.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
2plus2 
Member
Posts: 1214

Loc: Mission,BC
Reg: 02-03-05
02-07-19 10:59 AM - Post#2759300    
    In response to gchemist

Wire 1 or both fans to turn on when the ac compressor runs
This is how most manufacturers do it

69 Canadian Pontiac 2+2
factory L48 350 Chev,TH350,PW,PT
99 Silverado RCLB 4.8 NV4500 14BSF 4.10's locker 6" Procomp 35 bfg m/t's 9k winch cutout flares
07 Town Car Loaded,Tinted,Getting Bagged


 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
02-07-19 03:52 PM - Post#2759329    
    In response to 2plus2

True. GM and Ford use straight air flow cooling. Newer models may be different. Dodge has separate fans for cooling and a/c since 2002. The condenser has a separate air path.

Both my fans turn on either by temp or a/c pressure triggers. My truck runs a 454 thick radiator. When a/c pressures trigger fans, engine temps drop too. The R4 is not the best compressor. Maybe after upgrading, dual fan activation may work better for a/c. If not, a smaller condenser fan will cool R134 faster.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
junkman104 
Frequent Contributor
Posts: 1381
junkman104
Age: 60
Loc: Murphy N.C.
Reg: 01-25-14
02-07-19 06:53 PM - Post#2759346    
    In response to gchemist

I owned a 91 R/V style suburban years ago that had a pusher fan factory.



 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
02-08-19 08:07 AM - Post#2759375    
    In response to junkman104

Interesting. Was it diesel or BB? A bolt on would be nice. I’m going to check around on eBay. RockAuto does not list a condenser fan.
Did it cover all the condenser or part of it? I’ll have to search or find a pic. With a pic, I would know where to place a 12” fan. Or the biggest I can fit.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
02-08-19 09:00 AM - Post#2759382    
    In response to gchemist

Cool! Found a part number!
Fan Assembly - GM (15717423)
https://www.gmpartsdirect.com/oem-parts/gm-fan-censored...
It’s on order. I’ll use a 100 amp relay to power it. I’ll remove the trinary signal to the dual LS fans. I’ll post pictures when it’s installed.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
junkman104 
Frequent Contributor
Posts: 1381
junkman104
Age: 60
Loc: Murphy N.C.
Reg: 01-25-14
02-08-19 06:35 PM - Post#2759437    
    In response to gchemist

It originally was a 6.2 diesel that I swapped over to gas and sold the boat anchor that was in it. It wasn't very large maybe 14-16 in diameter on the passenger side of the condenser .



 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
02-10-19 05:36 AM - Post#2759527    
    In response to junkman104

junkman104 thanks for the added info. The R134 condenser is cross flow. Having it on the passenger side is ideal. The passenger side is exit and entry for R134.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
02-12-19 05:59 AM - Post#2759702    
    In response to gchemist

The condenser fan arrived yesterday. I'm not too excited about the fan. I can hear it squeak. It's okay. What matters are the brackets. A 12" Spal can be bolted on later. Does anyone have a picture of their condenser without a grill? I found one for an 85 truck. Seems there are bolt holes there. Two on the center/hood latch brace. Two more on the passenger side. Next on order is a weather proof pig tail. Stay tuned for installation pics!

Attachment: Fan2.jpg (53.86 KB) 4 View(s)


Condenser fan.


Attachment: Fan1.jpg (136.58 KB) 3 View(s)




Attachment: Fan3.jpg (139.95 KB) 5 View(s)




'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
1983G20Van 
Super Senior Member
Posts: 3767

Loc: Bedford, Texas, USA
Reg: 11-13-02
02-12-19 01:25 PM - Post#2759754    
    In response to gchemist

  • gchemist Said:
The condenser fan arrived yesterday. I'm not too excited about the fan. I can hear it squeak. It's okay. What matters are the brackets. A 12" Spal can be bolted on later. Does anyone have a picture of their condenser without a grill? I found one for an 85 truck. Seems there are bolt holes there. Two on the center/hood latch brace. Two more on the passenger side. Next on order is a weather proof pig tail. Stay tuned for installation pics!



That fan is different than the fan I have seen installed on the square bodies. That fan is IDENTICAL to the fan that came factory installed on my 1999 GMT400 Tahoe.

1983 G20 Van, 350 TPI, Ported 906 Vortecs, Edelbrock 3817 Base, ASM oversize runners. Reed Custom Roller cam, 700r4, 12 bolt with 3.08 gears, Doug Thorley Tri-Y headers, true duals


 
gchemist 
Senior Chevytalk Moderator
Posts: 24894
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
02-12-19 02:48 PM - Post#2759762    
    In response to 1983G20Van

Part number crosses to '99 or so.
PRODUCT DETAILS
Other Names: Auxiliary Fan, Fan
Description:
C/K Pickup, 5.0 & 5.7L. 5.0 & 5.7L. 7.4L, ac condenser fan.

Notes: Aux Fan For 1996-99 Listed As An Assembly Only.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


Edited by gchemist on 02-12-19 02:49 PM. Reason for edit: No reason given.

 
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