Aftermarket AC Condenser Install

jonn6464 said
Hey FABO,

I'm looking for some advice about installing an aftermarket AC system.

Car is a 70 Duster.

I have an AC system that came with a 12" electric fan for the condenser. The condenser fits, with no trouble, in front of (towards the grill) the radiator.
The radiator is also aftermarket with electric fan.

Is the condenser fan absolutely necessary, or will the rad fan and the position of the condenser on front of the rad be enough cooling?

With the fan and condenser, it extends into the space for the radiator about 2".

Alternately, I guess I can make 2" spacer brackets for the radiator mount to push it back. But I don't have the engine in yet so I can't check for clearance.

Thanks for any replies.

Can't tell you for sure about your particular set up, but here are a couple general points.

One, the pusher fan (front mount) is not as efficient as a puller ( rear mount).

It is entirely possible to run only the pull rear mount style fan provided it has enough CFM of air flow. You can reduce CFM requirement by making sure the fan shroud seals well against the radiator, and that the radiator to core support opening is sealed in some way as well.

I have used Dodge Intrepid dual fans on several set ups with good results. Fit 26" radiators like they were made for it. Used old trunk weather strip to seal against the radiator.

If you are going to run r134 for freon, make sure your condenser is a modern design with increased cooling capacity to make sure your AC will cool well at idle or sitting in traffic.

I would only run the front mount fan if you cannot get the cfm air flow you need from rear mount fans due to space issues.

Also that 110 amp alt should be plenty to handle the system provided you set up the fans on a relay.