ZDriver.com - Aluminum block Vs. Iron block.

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Aluminum block Vs. Iron block.

The answer is TENSILITY and HEAT!!! like i told you guys before. :)

That's why EVO X will better than any EVO from the engine to suspension because better technology, materials, research and development. :unibrow:

Quote:

Pound for pound, aluminum is four times stronger than steel. It has greater tensility (the greatest longitudinal stress a substance can bear without tearing apart) and yield (how much stress a material can tolerate before permanently deforming).

Apparently in a crash, aluminum absorbs two times the energy compared to steel.

Aluminum can replace iron and steel in automobiles with weight savings of 45 to 50 percent with increasing performance and no safety loss.

http://www.aluminum.org/ANTemplate.c...ContentID=9015 <<<<<<<Link

http://www.autoaluminum.org/main/ind...0&ArticleID=20

http://www.streetrodderweb.com/tech/...aluminum_axle/

well even I knew that...

Quote:

Originally Posted by Stealth

That's why EVO X will better than any EVO from the engine to suspension because better technology, materials, research and development. :unibrow:

I'm going to have to disagree. Pound for pound, aluminum is better than iron. However, an iron block has many more pounds of material than an aluminum block. To make an aluminum block as strong as an iron block it need to be much larger with greater bore spacing. In the case of the EVO X, not only did they switch to an aluminum block, but the also went to an open-deck design whereas the old 4G63 was a closed deck. The new EVO will be a better car in stock form than the EVO IX, but it won't take to mods as easily. Like the Honda motors, in order to make big power numbers, the block is going to have to be resleeved with ductile iron sleeves.