I seek to locate Pricing to purchase 1,000 to 10,000 complete
assembled engines that cost effective and ultra light approx. 5 lbs.
to 8 lbs. and atleast 4 hp or 65cc operating at approx.7000rpms. The
only engines that I have located that will work perfectly is on
Commercial Backpack
blowers.Echo,Shindaiwa,Stihl and Redmax are all between 63cc and 80cc
in size and ultra light weight.They will not sell engines seperate from blowers.
In order to build my apparatus I require a Manufacturer that can build
and sell a light durable comprobable style engine at a great price.
Thanks and God bless all.      Twinds

Hi

I don't know what constitutes a great price, but this seems to meet
your other specifications
http://www.zenoah.net/products/hobby/g620pu.html
and this one even smaller and lighter comes close
http://www.zenoah.net/products/hobby/g450pu.html