Dual pass radiators only cool slightly better (less than 5%) than single pass radiators. Don't believe the sales pitches and big claims, its just a way to sell more expensive radiators. More efficient cooling is achieved by slowing the flow of the water through the radiators, not by sending the water twice through the same radiator. Some heat expelled through the first pass is absorbed in the second pass, and the warm air flowing through the vanes reduces the cooling of both passes, lowering the efficiency of the radiator and making it not much better than a single pass radiator . Dual fans on a single pass radiator will cool better than a dual pass radiator with dual fans. Its not an opinion, it just science. If you want to cool better, slow the flow through the radiator by increasing the size of the core, and guarantee smooth airflow by adding dual fans. That's how Rube Goldberg would do it.
I think if you really want to help increase cooling, use aluminum tubing as the plumbing. Aluminum disapates heat very quickly, and acts as a heatsink before and after the radiators. Just in the tubing alone you can expect about a 10 to 15 degree temperature drop overall. Rubber hose is an insulator, use as little as possible.
Ahhh, Murci-me you didn't disappoint!
It is so nice to have an expert on EVERYTHING right here at Lamboclone. What would we do without you?
You admit they give you additional cooling but go on to explain how heat from the first pass somehow heats the second pass. (?) The two sections of the radiator are not one in front of the other.
You want to slow the water through the radiators to increase cooling. That is what thermostats do BUT if you slow the water too much the engine will overheat. That is why there are thermostats. They control the amount of water based on temperature. It is still up to the radiator to cool the water. Larger radiator cores will help BUT, as every builder here knows, we are limited in the space available for our radiators and so must made the best of what space we have. THAT is why we are discussing this!
As for dual fans, some have installed them and it has helped BUT it shouldn't be needed. The two fans could end up fighting each other if they have different capacity. If you install one EFFECTIVE fan, you will do well. Besides, THAT it too complex and I am surprised you would suggest it. You like to keep things simple. Remember KISS? Keep It Simple STUPID. Calling your opinion science does not make it so.
If you use aluminum tubing for your water piping with the expectation it will help your cooling, it will dissipate the heat right back into your engine compartment where you will have to find a way to remove it. (Maybe more fans? That would be simple, stupid. [KISS]) Is that 10 to 15 degree temperature drop proven scientifically? If so, it MIGHT register on the water temperature gauge BUT it ends up back in the engine compartment! You rely on Rube Goldberg too much.
Maybe the entire answer is back in your super-simple batwings.
RT
