Yeah It does use valve springs. I kinda want to start the engine w/o its valve cover..

http://www.osengines.com/engines/osmg2092.html

here's a 0.4 ci one

http://www.osengines.com/engines/osmg2096.html

I loved bringing that thing to the 'track' and drive it among the 2-stroke rockets Those 2-stroke rockets sounded like honda civics compared to the 4-stroke that sounded more car-like.

here's my "Viper"
http://www.nitroreview.com/reviews/viewreview.cfm?reviewid=154

somehow nbci closed my website damn.. miss that car. I think I'm gonna have it shipped from wherever it is now (Singapore or Jakarta)

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2008 BMW 335i Coupe