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#1 |
Registered User
Join Date: Nov 2012
Location: melbourne australia
Posts: 196
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86 silverado air cond upgrade.
I am moving to a much hotter climate and the stock air cond in my truck has never been that great.
It has a new four seasons compressor. New dryer. Shut of tap for the heater. Re gased. When engaged it sends a vibration through the truck at idle even with the solenoid idle kicker is engaged. Not sure if this normal as it did that with the old pump as well and I thought the new one would eliminate that? It also kills my gas mileage by way more than I would expect but maybe that's normal also? Is there a more efficient modern compressor or complete set up I can install ? |
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#2 |
Registered User
Join Date: Mar 2010
Location: Aledo, Texas
Posts: 803
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Re: 86 silverado air cond upgrade.
Vintage Air.
__________________
84 step side 87 swb |
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#3 |
Registered User
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 1,526
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Re: 86 silverado air cond upgrade.
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#4 |
Registered User
Join Date: Aug 2012
Location: Oklahoma City, OK
Posts: 2,541
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Re: 86 silverado air cond upgrade.
What refrigerant? How much? Was it vacuum pumped before being filled? If the refrigerant was changed, was the old oil flushed out?
R-134 is a lot less tolerant of air in the system and being either over or under charged. My 75 has the older style long compressor and I don't notice much vibration and I don't have the idle solenoid. Mine costs me 1~2mpg at speed. |
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#5 |
Registered User
Join Date: Jul 2011
Location: SW Ontario
Posts: 1,204
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Re: 86 silverado air cond upgrade.
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#6 |
Registered User
Join Date: Dec 2010
Location: Burleson, Texas
Posts: 596
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Re: 86 silverado air cond upgrade.
I live in Texas.. After talking to a lot of people here, instead of rebuilding the original system, I am going vintage air!
__________________
Allengator Outta the Blue (my band - available for hire in the DFW area!) 1980 Chevy SWB Pickup (build thread) 1951 Chevy Sedan Delivery 2004 Chevy Tahoe Z71 2011 Harley Davidson Street Glide 2018 Silverado Z71 Crew Cab |
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#7 |
Registered User
Join Date: May 2013
Location: Post Falls, ID
Posts: 885
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Re: 86 silverado air cond upgrade.
I work for a refrigeration company. Our shop truck is a '79 C30 with a 454 and original AC still in place. I went through the system, replaced all the O-rings and both rubber hoses.
Pressure tested it over night, then pulled a vacuum on it with our big Appion vac pump. After it achieved a nice, deep vacuum (500 Microns), I installed the proper amount of R-12 back into the system. That thing will FREEZE YOU OUT! Even when it's triple digit temps, it's always cool in The Dually. The point being, there is nothing wrong with the design of the factory AC, and parts are still available. My opinion is worth exactly what you are paying me for it. -Russ |
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#8 | |
Registered User
Join Date: Dec 2012
Location: Temple City
Posts: 3,587
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Re: 86 silverado air cond upgrade.
Quote:
Alot of mechanics dont vaccum, and noncondensibles stay in. Ruining the performance. My sister's husband was looking at me like I was a freak using nitrogen on a friends truck. The compressor was changed, but I spent time blowing R11 flush through it since it had several dye packets added in its life time. |
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