Hey guys. I finally broke down and am installing a Classic Auto Air AC system. The system comes with the upgraded SPAL blower which uses the same circuity as the stock 308. I have, however, a Spal blower I purchased a while ago thinking I would just upgrade the blower. The blower I purchased has a built in 3 speed resistor. (see pic). I'm thinking I could move the three blower wires from the existing old style resistor and just plug them into the Spal unit as it appears to do the same thing albeit with later tech and large heat sink. My existing stock setup works OK but really gets hot to the point the connectors are cracked from the heat. I would try and pull the three wires connecting to the stock resistor through the front compartment firewall?. If I wanted to I could shorten the wires quite a bit which might be better. I looking at the wiring schematic It appears the AC blower does not use relays just 3 12v wires going to the resistor. Essentially the Spal resistor would replace the stock AC speed resistor. Anyway just a thought I would like to know what you guys think. Thanks Barry Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Yes, you have found the secret weakness, low ventilation air flow. Also solid state resistors have less heat and longer life Do you have Spal 008, 009 or 010 series fan with 260, 320 or 400 cfm maximum flow rate?
Yes its the 008 series that flows 407 cfm. I tested it this morning using the attached Spal resistor and it works great. So I'm going to use the Spal resistor not the stock GTS resistor. The kit also comes with a Sanden reverse rotation compressor and clutch along with a much more efficient condenser and of course all the bits and pieces to mount and hook everything up. I hope its worth it as its a real pita install.
Barry, anything will be better than the stock AC. Can't wait to see AND experience the final result. I was going to drive the car yesterday then decided against it because I prefer my skin on my face instead of melted on my shirt.
Yep. Final straw was coming home from the San Marino show. About 110 outside and it felt like a furnace inside. No matter what I do to the stock AC, and it works like new, It just can't keep up with So Cal's heat and blistering sun.. Just a word of warning, this "kit" leaves a lot to be desired. I've been on it for almost a week (working in mornings when its cool} and still have a way to go and I'm not changing the long AC hoses as mine have the correct fittings. Only thing left is reinstalling the blower / evaporator, A real pain. Will try again tomorrow.
the a008 series has 260 cfm if your evaporator has zero static pressure perhaps step up to a A010 series
