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Group 9 - Accessories - Radio, Heater, A/C, Sound Systems Radio, Heater, Air Conditioning, Sound Systems

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Old 06-28-2006   #1 (permalink)
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Unanswered: a/c fan questions & m?c support

Putting in a GM a/c Drivers side a/c compressor.
Drive belt for compressor forces the fan to be spaced out from pully. Any idea how much.
Or am I better off putting in a electric fan with a thermal switch?
Also does some of the master cylinder support bar have to be removed?
Thanks for any help
Dave
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Old 06-28-2006   #2 (permalink)
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Dave, if you check out some of the pics in my Willit? Update thread you'll see pics of my engine compartment where the brake rod support has been cut specifically for the GM AC pump. As far as the fan pulley, if the AC compressor has been mounted using the correct bracketry, all you should have to do is line up the pulleys and make sure the fan clears the radiator.
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Ron
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Old 06-29-2006   #3 (permalink)
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Ron, The pully lines up. But is it better to use a specer for fan or put in elecric fan. How much of a spacer will fit?
Dave
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Old 06-29-2006   #4 (permalink)
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Given where you live you may want to add a pusher fan to go along with the stock fan. On my Datsun I found that to be a big help here. I have it wired to come on whenever the A/C is on and when the temps rise over a certain (I forget what) temperature.
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Next stop the Twilight Zone.....

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Previously:
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Old 06-29-2006   #5 (permalink)
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Dave, I can't say about the spacer, I've got the original engine in storage so I don't know about the size, if any was on it originally. I would suggest checking the fan blades to make sure they won't impact the radiator or the fan belts, that may be the only reason to have the spacer installed.
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Ron
72 GT 3.4L V-6/T-5/ZF posi - almost done - Just need AC installed.
75 Chevy monza 5.7L/TH350/Auburn 3.08 posi - Next
Old 06-29-2006   #6 (permalink)
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Ron,
The fan does hit the timing cover so it does need a spacer cant remember how much room is in front of fan for a spacer.
Don't want to hit radiator.
Dave
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Old 06-29-2006   #7 (permalink)
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Dave, don't know why your fan is hitting the timing cover, or why you need a spacer, I will have to look at your engine.
Not sure how the pulley system is set up on the stock ARA, my compressor is passenger side mounted and all custom as you know.

I mounted a condensor in the front of the GT nose with a pusher fan. This way the radiator gets full air flow. I have a stock 5 blade fan, no fan shroud, and water temp is always low, even in 90+ temp's!
I will mount the fan shroud someday.

Are you using the stock, large, GM compressor?
I use a little Geo Metro type and it works great, more room to mount.
The measurement from the water pump mounting surface to the radiator is about 5-1/8" on mine.
Lyle
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Old 06-30-2006   #8 (permalink)
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I am attaching a photo of some Opel a/c parts I have.

In the photo are an a/c pulley, four spacers, and a thermostat housing with an 'extension spacer'.

I believe it is all for the ARA a/c set-up that goes on the driver's side. The spacers are (from left to right):
#1- A good question. Doesn't look like an Opel installed piece, but it will fit.
#2- One I made for fan clearance. 1/2" thick.
#3- About 1/4" thick.
#4- About 3/4" thick.
Attached Images
File Type: jpg OPELAC.JPG (40.4 KB, 32 views)
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Old 06-30-2006   #9 (permalink)
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Originally Posted by opelbits
I believe it is all for the ARA a/c set-up that goes on the driver's side. The spacers are (from left to right):
In the pics is a different thermostat housing than original, so that would mount on the passenger side, which is where the ARA system was mounted on the GT. The GM system did mount on the driver's side and the compressor mounting necessitated cutting the brake rod support for clearance.
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Ron
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Old 06-30-2006   #10 (permalink)
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You are so right namba...I had a little dyslexic brain fart. I didn't transpose any letters, just which side of the car I was picturing in my mind. Everything I have is from the ARA *passenger* side a/c system.
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Old 07-01-2006   #11 (permalink)
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Spacer for GM AC

The 1/2" or the 3/4" spacer will work, the 3/4" is more common when using the 7 blade fan though on the GM set up. The 1/4" is for no AC.
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Old 07-02-2006   #12 (permalink)
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Originally Posted by opelbits
I am attaching a photo of some Opel a/c parts I have.

In the photo are an a/c pulley, four spacers, and a thermostat housing with an 'extension spacer'.

I believe it is all for the ARA a/c set-up that goes on the driver's side. The spacers are (from left to right):
#1- A good question. Doesn't look like an Opel installed piece, but it will fit.
#2- One I made for fan clearance. 1/2" thick.
#3- About 1/4" thick.
#4- About 3/4" thick.
Opelbits,
Is the 3/4" one available. If so how much do you want for it?
Thank
Dave
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Old 07-02-2006   #13 (permalink)
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mine has the double crank pulley on it and has the spacer on the fan and the fan only has about 1/16" from the radiator...im going to remove it and put on an electric one sometime, but need to pull the radiator just to get to the bolts for the fan...
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Old 07-02-2006   #14 (permalink)
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Originally Posted by D Wright
Opelbits,
Is the 3/4" one available. If so how much do you want for it?
Thank
Dave
I'm afraid none of the a/c parts are for sale. I have two a/c set-ups, one for a GT and one for a Manta and until I decide what to keep and build, I'd like to hang on to them.

I'd be happy to supply all the dimensions if you want to have one made. Or if one of our illustrious machinist members would like to do it. I could, but the lathe at work is maintained well enough to easily use it.
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Old 07-02-2006   #15 (permalink)
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Originally Posted by D Wright
Opelbits,
Is the 3/4" one available. If so how much do you want for it?
Thank
Dave
Dave, send me a PM on the spacer I have several, both plane and a crome plated, just let me know which one you want.
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68 Kadett 2 Dr 1.1 SR/Rallye Suspension
68 Kadett Rallye 1.9/4 Spd & AC
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70 GT 1.9/5 Spd,87 Impulse PB/MC/4 wheel 10.5" vented Disc/complete suspension/power assist & tilt wheel steering
71 Kadett 2 Dr 1.1/4 Spd/4 wheel drum brakes(project:to a 1.9 FI/Auto 75 Big Brakes/Impulse vented rr Disc, Factory AC from Buick/Opel by Isuzu
72 GT 1.9 FI/Auto 75 Big Brakes/Impulse vented rr Disc
73 Manta Rallye
75 Ascona 1.9 FI/5 Spd/Impulse rr Disc brakes
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