Search found 8 matches

by Bailey28
Sat Jul 18, 2020 7:00 am
Forum: Automotive Air Conditioning Forum
Topic: Minimum compressor RPM
Replies: 14
Views: 1775

Re: Minimum compressor RPM

I also plan on getting a higher quality turnbuckle in the future.

The turnbuckle you see is an el cheapo from the hardware store and was for experimentation purposes.
by Bailey28
Sat Jul 18, 2020 6:58 am
Forum: Automotive Air Conditioning Forum
Topic: Minimum compressor RPM
Replies: 14
Views: 1775

Re: Minimum compressor RPM

This is how I have the turnbuckle attached. I set the belt tension first. Then preloaded the turnbuckle slightly. After purchasing the Alan Grove bracket I noticed another bracket I could have bought that has a turnbuckle included but attaches to slightly different points on the head. I read that Sa...
by Bailey28
Wed Jul 15, 2020 6:06 pm
Forum: Automotive Air Conditioning Forum
Topic: Minimum compressor RPM
Replies: 14
Views: 1775

Re: Minimum compressor RPM

An update for you all: I removed the underdrive pulley and installed the stock diameter crank pulley. The compressor now turns faster which allows for better cooling at low rpm. HOWEVER the vibration was still there with the car in drive at a stop. Since the rear of the compressor is supported only ...
by Bailey28
Sat Jun 27, 2020 4:47 pm
Forum: Automotive Air Conditioning Forum
Topic: Minimum compressor RPM
Replies: 14
Views: 1775

Re: Minimum compressor RPM

No worries as the car is not a street racer. If the engine goes past 3,500 rpm with me driving it something is wrong! With 2.73 gears cruise rpm at 60 is 2200. The engine pulleys will handle a 10mm 3/8 belt. Any larger and the belt rides up out of the pulley outer circumference. That's good to know ...
by Bailey28
Fri Jun 26, 2020 5:51 pm
Forum: Automotive Air Conditioning Forum
Topic: Minimum compressor RPM
Replies: 14
Views: 1775

Re: Minimum compressor RPM

Great suggestions so far. Getting a new compressor is not going to happen unless this one breaks. If I reinstall the stock diameter 8" pulley I will turn the compressor 1040 rpm with an engine rpm of 650 in drive... If I bump up the idle in drive to 700 the compressor will turn 1120 rpm. Also.....
by Bailey28
Thu Jun 25, 2020 6:03 pm
Forum: Automotive Air Conditioning Forum
Topic: Minimum compressor RPM
Replies: 14
Views: 1775

Re: Minimum compressor RPM

I do in fact have a solenoid installed and it does kick up the throttle to where it idles at 650 in gear. If I go higher on rpm the vibration gets worse before it gets better. I can only go so high on engine rpm in drive before the brakes won't hold the car stopped in traffic. 900 is about the max b...
by Bailey28
Thu Jun 25, 2020 2:30 pm
Forum: Automotive Air Conditioning Forum
Topic: Minimum compressor RPM
Replies: 14
Views: 1775

Minimum compressor RPM

I installed a Sanden SD5H14 heavy duty into an El Camino with a stock small block Chevy 350. The a/c works well and I get vent temperatures of 38 degrees F driving down the road. However when I come to a stop the idle is very rough with the compressor engaged. Some kind of vibration is happening whe...
by Bailey28
Tue Apr 03, 2018 6:32 am
Forum: Automotive Air Conditioning Forum
Topic: Help with new AC system 1984 El Camino
Replies: 2
Views: 3243

Help with new AC system 1984 El Camino

Hey guys, I've rebuilt my 84 El Camino and I have installed a brand new A/C system from store bought parts. New R4 compressor, new evaporator, new condenser, all new lines, new accumulator, etc. I used a new white GM orifice tube. I put 4 ounces of PAG 150 into the compressor, 1 ounce into the accum...

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