| Author |
Message |
James Selevan (Jselevan)
Junior Member
Username: Jselevan
Post Number: 204
Registered: 6-2002
| | Posted on Tuesday, November 05, 2002 - 7:28 pm: | |
Frank - my experience parallels Drew's. There is plenty of air flowing through the dash vents. The little guys under the dash are not sufficient. Open the dash vents and you really get a great deal of air. If you notice fans changing speed with the introduction of other loads (lights, brake lights, etc.) then you have either a bad ground at the battery, voltage regulator difficulty, or bad battery/altenator. You should not need to re-wire a dedicated circuit for these fans.
Jim S. |
J. R. Vallandingham (Jrvall)
New member
Username: Jrvall
Post Number: 19
Registered: 11-2002
| | Posted on Tuesday, November 05, 2002 - 4:50 pm: | |
I think that's likely the best most direct solution to bring an old car up to newer specs...I just installed a nice new unit in a '70' Daytona..behind the cover, invisible....worked Sooooooo much better than the old unit. Those units are pushing 20 years old and weren't that swift when new ;0(.
Here's some sources for units...
http://www.air-tique.com/
http://www.vintageair.com/ |
david a haney (David512bb)
New member
Username: David512bb
Post Number: 16
Registered: 1-2002
| | Posted on Tuesday, November 05, 2002 - 3:21 pm: | |
The fellow who started the Stainless Brake Co. had a BBi. His name was George and he was a really nice guy. He modified his car with an aftermarket evaporator unit from a place called Old Air Co. out of Texas. They had an underdash unit which he installed on the passenger side, and he told me it was not "concours" but really did the job. He used his stock compressor, and condenser. I plan to do the same to my BB. |
J. R. Vallandingham (Jrvall)
New member
Username: Jrvall
Post Number: 16
Registered: 11-2002
| | Posted on Tuesday, November 05, 2002 - 12:35 pm: | |
I agree many I've worked on (and 308-328's)had slow running fan motors. That is definately a problem with many cars imo. The other of course 1)is lack of re-circ air flow 2) Air leaks in the ductwork is also a common problem (I seal the lower hoses and the holes on the sides of the plastic snorkel). 3) Lack of proper service and replacement of Dryer & Expansion valve. Plus-All modern AC's recirculate the air (Flow cooled air back across the evaporator)to speed up the cabin temp drop. Most evaporators can only achieve a 20-22 degree temp drop across the evap core, so 90 going in is 68-70 at best coming out.
But with the huge windshield and black dash Boxers probably just need a bigger better Evaporator/Blower unit to produce the results we have grown acustomed to imo. |
Drew Altemara (Drewa)
Junior Member
Username: Drewa
Post Number: 75
Registered: 2-2002
| | Posted on Tuesday, November 05, 2002 - 9:22 am: | |
Frank, I have never noticed this. I seem to have plenty of "fan power" however the air coming from the small central vents is just not enough; maybe this is what you are refering to. I think it is more of an air dispursement issue. I wish there were some way to direct the air to the sides. If you open the top three dash vents and angle them your way it helps.
The biggest problem is the coolant pipes running under the car and the rake of the windshield. I have a red car and live in Tuscaloosa, AL. In 90 degree weather the AC is marginal.
I would like to hear what some of the other owners think. |
Frank Parker (Parkerfe)
Intermediate Member
Username: Parkerfe
Post Number: 1476
Registered: 9-2001
| | Posted on Tuesday, November 05, 2002 - 8:19 am: | |
As I have been looking for a Boxer I have spoken with many people with knowledge about them. According to a Ferrari dealer service manager I know, one of the main reasons that the Boxer A/C is so weak is because the fan volume is weak. According to him, that is because the A/C fan is on the same circuit as the ignition and when the engine is running the ignition takes all the amps causing the fan to run slow. The slow fan causes the system to work inefficiently and thus results in a toasty cabin. He claims if you rewire the A/C/ fan on a circuit of its own that the cooling increases dramatically. It makes sense and is certainly worth a try for all you hot Boxer owners out there. |