Some manufactures (Kia, Hundai) use Iron blockswhileOther manufactures (Nissan, Chevy, ect.) use Aluminum blocks*****Is the point of using Iron blocks to increase long-term durability or temperature endurance??ORIs the use of Iron blocks simply an older, simpler technology (as compared to using Aluminum), the manufacture of which costs less money??And you would think that Aluminum weight savings would transer to better MPG, but the Kia gets very comparable mileage anyway.Thank you
The latter points were right. Iron blocks are heavier, although much cheaper to make. Aluminum ones are significantly lighter and handle heat better, but it is a bit more expensive to make them.
Aluminum's main advantages are weight and increased mpg for CAFE regulations. If you are going to keep your car to 150,000 miles eitheir block material will do. But if you are going to keep it 300,000 to the bitter, bitter end, you are better off with iron.
