<VV> A/C Condensers & Fans

[Mikeamauro@aol.com]

Snip...I guess I don't quite understand what's going on here. I've had my '67 

A/C Monza for twenty years. I've never had a problem with the A/C that 
helper fans would have solved. Why, when you have all the inlet air for 
the engine flowing through the condenser, do you need any more fans?...Snip

If you are still using R-12, no problem.  However, if converting to 134a, you 
will not have enough (stock) condenser (at least not in warm southern 
climates). 134a head pressures--even with modern parallel flow condensers--run head 
pressures about 30% higher than R-12.  Add that reality to a less than adequate 
stock R-12-type condenser, and a stock Corvair system will not cool 
consistently well with 134a.  The key is to insure good subcooling at the 
TXV...subcooling means there is nothing but liquid refrigerant being fed through the TXV 
into the evaporator....liquid refrigerant absorbs bunches of heat,,,flash vapor, 
next to none. The easiest way to insure good performance using 134a with a 
stock condenser: move more air across the condenser (via electric fans), thus 
removing more heat from the condenser.
Mike Mauro