308 QV Radiator

If your core is still good, you can just resolder the tank or, not cheap but Nick Forza has the aluminum direct fit that I heard a lot of good things about it.
https://www.nicksforzaferrari.net/nff-performance-radiators.html

 

Common common common common

When I bought mine in 97 it leaked. It was repaired. It leaked again, repaired again. The one day on the way to work, coolant was actually blowing on my windshield thru the hood vents (it's a QV).

I put one of those oversized aluminum ones in.

 

that is how it is wired from the factory

I jumped mine so they both come on now.

 

The fan switch kicks them on about 195. BTW, it is the SAME two pole switch used in a 1980 VW Rabbit etc. Not similar - SAME.

I jumped them on my 84 in the fall of 1997. I live in the south and I have put about 70,000 miles on it during these past 25 years. Lots of HARD track days and getting stuck in Atlanta traffic on 90 degree afternoons. I put a 180 degree switch (or something around that number) in there at the same time. It was an aftermarket VW part.

I'm not making any claims here. I am simply reporting that both my fans come on 15ish degrees sooner than stock and pretty much run continuously and have been doing so in the deep south climate for a quarter century and 70,000 miles without a single problem on the circuit. Never. None. Zero.

 

I am 99.9% certain one comes on until you switch on the a/c, then both blow

 

Sounds right.

BTW, in case you don't already know this, the QV model's cooling system was a tad under-engineered from the factory. They just tend to run on the warmer side which Ferrari cleared up with the 328 model. You are going to see your needle swing to the right more than straight down down there in Florida.

 

FWIW, I just ordered this switch for my 308 QV. Found the part number in a thread here.

https://www.fcpeuro.com/products/audi-vw-engine-cooling-fan-switch-82395948182

 

Both radiator fans should come "on" when the thermoswitch in the radiator closes (i.e., coolant hot). If your RH radiator fan doesn't run when the water temp is hot and the AC is "off" (but does run when you turn the AC "on"):

1. Try a different ...113 relay in the relay C position "relay for right radiator fan". If no joy,

2. Check that you have two large V (green) wires connected to the bottom of fuse #17 and that both are at +12V (they should be even with the key "off", but best to make this measurement when the coolant is hot and both fans should be running -- i.e., under load). One of these green wires goes to relay C to be the +12V power source to run the RH radiator fan when the coolant is hot, and the other one goes to Relay D, "relay for radiator right fan with operating air conditioner", to be the +12V power source to run the RH radiator fan when the AC is turned "on".

 

Yes. Bottom passenger side.

The lower temp thing was just something I knew about since I grew up driving a Scirocco. I had all the catalogs. It was an aftermarket thing like stiffer springs, larger throttle bodies, etc.

But that was 25 -35 years ago. I wouldn't even know where to look for one today. I put it on my QV to see if it would run cooler but it didn't.

 

Both. For the test, just temporarily borrow another one with the same part number from some other function (like the horn relay or the window motor relay). If you do need a new relay, it's a very common auto relay that any auto parts store should be able to match up. I believe the metal case Bosch relays are now unobtanium so today's Bosch (or TE connectivity) equivalent would be a little different appearing (plastic case), but other brands, like Standard, are readily available, too. My notes have:

Ferrari 40130007
Bosch 0332014113 (metal case) = Bosch 0332019151 (black plastic case) = Tyco V23234-C0001-X006 (brownish orange plastic case)

 

Glad that it was a simple fix for you.

For the aluminum radiator, another source that has come up here before is Wizard Cooling:

https://wizardcooling.com/c-1391450-radiators-ferrari.html

Couldn't find any product/pricing information on the NFF website, but at least you'll have two sources to compare.

 

I got a radiator from Nick's Forza, it's fabricated by Wizard so same thing as linked above. Aluminum radiators are much lighter but have to be about an inch thicker than the equivalent copper radiator to achieve the same performance. They are notched at the ends of the lower section so they will fit into the existing mounts without modifying anything. I replaced the original fans at the same time with some more modern ones that have built in shrouds but I'm pretty sure you can use the originals if you want. If so it might be advisable to replace the bearings or bushings.

 

It's quirky

Some seem more prone than others and it appears to only be the QV model. If I get caught in stop and go traffic on the highway I start getting really concerned watching that needle. Typical driving is just not an issue. Neither is the track in Aug.

Weird, but I have learned to make it work.