MechanicalDesign

This page is for info about drilling, welding, blowing :-) mechanical stuff,

http://www.millerwelds.com/education/library.html
http://www.lincolnelectric.com/knowledge/articles/

Various research papers regarding engine exhaust pressure and igntition timing effects:

http://www.cafefoundation.org/research.htm

Learn welding

http://www.lincolnelectric.com/knowledge/articles/content/twoguys.asp

Stainless Steel:

http://www.burnsstainless.com/TechArticles/Stainless_article/stainless_article.html

See also: ElectronicDesign, InTake?, TurboChargers, ValveTrain?

google: backyard metalcasting