The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board > The 1973 - 1991 Blazers, Jimmys, and Suburbans Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 06-16-2018, 08:34 AM   #26
hatzie
Senior Member
 
hatzie's Avatar
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 2,961
Re: Suburban A/C fix + Vintage Air?

Rear AC Wiring Diagram



Rear window wiring diagram.

__________________
1959 M35A2 LDT465-1D
1967 Dodge W200 B383, NP420/NP201
1969 Dodge Polara 500 B383, A833
1972 Ford F250 FE390, NP435/NP205
1976 Chevy K20, 6.5L, NV4500/NP208
1986 M1008 CUCV
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8


RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...Please include at least the year and model in your threads. It'll be easier to answer your questions.
And please let us know if and how your repairs were successful.
hatzie is offline   Reply With Quote
Old 06-16-2018, 04:24 PM   #27
swissarmychainsaw
Registered User
 
Join Date: Jun 2009
Location: san francisco, ca (east bay)
Posts: 534
Re: Suburban A/C fix + Vintage Air?

Quote:
Originally Posted by hatzie View Post
Rear AC Wiring Diagram
Rear window wiring diagram.
This is awesome, I also noticed your "fundamentals of air conditioning" link!
Thanks a ton for making all that available!

Last edited by swissarmychainsaw; 06-16-2018 at 07:44 PM.
swissarmychainsaw is offline   Reply With Quote
Old 07-08-2018, 05:59 PM   #28
catch2otwo
Registered User
 
Join Date: Mar 2013
Location: SF
Posts: 283
Re: Suburban A/C fix + Vintage Air?

hey hey, noticed you were a fellow east bayer, care to share you parts guy? About to start restoring my wifes 73. Also plan on rear ac.
catch2otwo is offline   Reply With Quote
Old 07-11-2018, 12:27 PM   #29
swissarmychainsaw
Registered User
 
Join Date: Jun 2009
Location: san francisco, ca (east bay)
Posts: 534
Re: Suburban A/C fix + Vintage Air?

Quote:
Originally Posted by catch2otwo View Post
hey hey, noticed you were a fellow east bayer, care to share you parts guy? About to start restoring my wifes 73. Also plan on rear ac.
PM Sent!
swissarmychainsaw is offline   Reply With Quote
Old 07-31-2018, 07:52 PM   #30
phillipm
Registered User
 
Join Date: Oct 2014
Location: Scottsdale, AZ
Posts: 435
Re: Suburban A/C fix + Vintage Air?

I'm late to this as well. But 2 things. Definitely only use AC o rings. and 2, if you do 134a be sure to get the biggest parallel flow condenser you can fit. Okay, actually 3 things. I would use a compressor that's in the 9.5+ cubic feet / revolution area. I don't know if the trailblazer accessories allow it but something like a denso 10s17F or a 10s20F. Many of the compressor you find will be sized for a single evaporator system and will likely be a bit under sized. I suggested the 2 above as they are bigger than your typical Sanden from a cubic feet per revolution standpoint.
phillipm is offline   Reply With Quote
Old 08-01-2018, 09:53 AM   #31
swissarmychainsaw
Registered User
 
Join Date: Jun 2009
Location: san francisco, ca (east bay)
Posts: 534
Re: Suburban A/C fix + Vintage Air?

This is what I bought: https://www.summitracing.com/parts/HLY-20-142
Which comes wit an Sanden SD 7 (no real details on that page though).

I have the parts, but not installed them yet...
I can't even find details on what "cubic feet per rev" this unit puts out.
swissarmychainsaw is offline   Reply With Quote
Old 08-01-2018, 11:14 AM   #32
phillipm
Registered User
 
Join Date: Oct 2014
Location: Scottsdale, AZ
Posts: 435
Re: Suburban A/C fix + Vintage Air?

Quote:
Originally Posted by swissarmychainsaw View Post
This is what I bought: https://www.summitracing.com/parts/HLY-20-142
Which comes wit an Sanden SD 7 (no real details on that page though).

I have the parts, but not installed them yet...
I can't even find details on what "cubic feet per rev" this unit puts out.
SD7 is just the family of compressor. On the nameplate it should give the actual model of the compressor and you could look it up on Sanden's website. Something like a SD7H15 would be 154cc/rev and just under 9.5CI/Rev. That would be close. I know late model GM stuff uses 200cc/rev on dual evaporator orifice tube systems. I know the front system on the 73-91 Burb is an orifice tube but not sure if the rear is a TXV or orifice. I would think they would match them?
phillipm is offline   Reply With Quote
Old 08-01-2018, 11:20 AM   #33
phillipm
Registered User
 
Join Date: Oct 2014
Location: Scottsdale, AZ
Posts: 435
Re: Suburban A/C fix + Vintage Air?

I just looked at one of the review's on summit racing from the link you sent me, they put a picture of it mocked up on their Camaro. Name plate read SD7B10. Unfortunately that's a 100cc/rev compressor. My opinion, way too small for what you're trying to accomplish. Do you know if the Trailblazer SS is the same offset crank pulley as a standard truck drive?

http://www.sanden.com/pistoncompressors.html
phillipm is offline   Reply With Quote
Old 08-22-2018, 10:46 AM   #34
king-918
Registered User
 
king-918's Avatar
 
Join Date: Nov 2011
Location: Oklahoma City Oklahoma
Posts: 1,049
Re: Suburban A/C fix + Vintage Air?

Nice!
__________________
<----Christopher

Oh yeah I'm really a Toyota guy, but had some stuff sitting around.



Oklahoma
king-918 is offline   Reply With Quote
Old 09-11-2018, 08:46 AM   #35
justpball
Registered User
 
justpball's Avatar
 
Join Date: Dec 2008
Location: Silverhill, Al
Posts: 2,025
Re: Suburban A/C fix + Vintage Air?

I am in the middle of putting the vintage air in my dash and if it will not cool the Burb off I will be retrofitt a rear air, already grabbed all the parts from a doner... lots of good info on this post! Thanks
__________________
Fuzzy Dice Club Member

87 Crew SWB
Build for the crew
http://67-72chevytrucks.com/vboard/s...d.php?t=430082

http://www.cardomain.com/ride/3232925
90 burb 2wd

Build Thread For The Burb!
http://67-72chevytrucks.com/vboard/s...d.php?t=383055
justpball is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
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

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:18 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com