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| Group 9 - Accessories - Radio, Heater, A/C, Sound Systems Radio, Heater, Air Conditioning, Sound Systems |
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#1 (permalink) |
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Opeler
Join Date: Oct 2005
Location: Largo, FL
Posts: 12
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Unanswered: a/c fan questions & m?c support
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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#2 (permalink) |
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6,000 Post Club
Join Date: Aug 2002
Location: Imperial Beach, CA South of San Diego
Posts: 6,054
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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 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 |
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#4 (permalink) |
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Member
Join Date: Nov 2003
Location: Las Vegas, NV
Posts: 494
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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..... 1973 Opel GT 1977 Datsun 280Z Previously: 1971 Opel GT 1973 Opel Manta |
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#5 (permalink) |
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6,000 Post Club
Join Date: Aug 2002
Location: Imperial Beach, CA South of San Diego
Posts: 6,054
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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 |
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#7 (permalink) |
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1970-GT
Join Date: Sep 2005
Location: Clearwater, Florida
Posts: 1,237
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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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#8 (permalink) |
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Detritus Maximus
Join Date: Jul 2002
Location: St. Louis MO
Posts: 1,160
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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.
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"No, it's not fiberglass." "No, the motor is not in the back." "No, your friend in high school did not 'peg' his speedometer." |
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#9 (permalink) | |
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6,000 Post Club
Join Date: Aug 2002
Location: Imperial Beach, CA South of San Diego
Posts: 6,054
![]() Provided Answers: 6
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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 |
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#10 (permalink) |
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Detritus Maximus
Join Date: Jul 2002
Location: St. Louis MO
Posts: 1,160
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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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"No, it's not fiberglass." "No, the motor is not in the back." "No, your friend in high school did not 'peg' his speedometer." |
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#11 (permalink) |
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Senior Contributor
Join Date: Jan 2003
Location: Leonard, Texas
Posts: 888
![]() Provided Answers: 1
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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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rk 68 Kadett 2 Dr 1.1 SR/Rallye Suspension 68 Kadett Rallye 1.9/4 Spd & AC 69 GT 1.9/4 Spd 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 OPEL WERKS |
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#12 (permalink) | |
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Opeler
Join Date: Oct 2005
Location: Largo, FL
Posts: 12
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Is the 3/4" one available. If so how much do you want for it? Thank Dave |
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#13 (permalink) |
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1000 Post Club
Join Date: Dec 2002
Location: Akron, OH
Posts: 1,734
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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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Adam |
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#14 (permalink) | |
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Detritus Maximus
Join Date: Jul 2002
Location: St. Louis MO
Posts: 1,160
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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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"No, it's not fiberglass." "No, the motor is not in the back." "No, your friend in high school did not 'peg' his speedometer." |
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#15 (permalink) | |
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Senior Contributor
Join Date: Jan 2003
Location: Leonard, Texas
Posts: 888
![]() Provided Answers: 1
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__________________
rk 68 Kadett 2 Dr 1.1 SR/Rallye Suspension 68 Kadett Rallye 1.9/4 Spd & AC 69 GT 1.9/4 Spd 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 OPEL WERKS |
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