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Originally Posted by c1apton
PROS:Running an aluminum radiator disipates heat better - you can run a smaller radiator, smaller amount of coolant to get by for the cooling side of eng needs. Weight would greatly be decreased
CONS:Usually have to change thermostat and your heater efficency will suffer (like little or no heat) and they are very fragile (bugs, rocks, etc ) punture very easy.  |
Maybe it's just me, but wouldn't the AC condenser take the grunt of all the bugs and rocks and all? The only way this would happen if you deleted your AC, but I don't recommend that for a street car either.
Aluminum radiators also add higher flow capabilities to the mix. They are overall much better than anything BMW provides via OE/OEM. There is also a high performance water pump available that will create 15% or more flow through your cooling system. The water pump + the aluminum radiator = perfect cooling. Cooling has always been an issue with the E36 and so on, so this would be a perfect upgrade.