How much detail? A quick google of "Steam engine plans" (minus quotes turns up quite a few hits - some free, some not. They don't seem totally complete but there's a fair bit of info there:
http://npmccabe.tripod.com/steam.htmhttp://www.john-tom.com/html/SteamPlans.htmlhttp://www.vintageprojects.com/machine-shop/steam-engine-hobby.html (looks fairly detailed)
http://www.modelsteamplans.com/ (not free but only 10 pounds)
http://www.geocities.com/steammodel/engineplans.html
Edited by Shonky (17/06/2008 08:23)
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Christian
#40104192 120Gb (no longer in my E36 M3, won't fit the E46 M3)