I've played around with HHO. I can make fire from water. However, I must make it perfectly clear that this process can be extremely dangerous. I've had my explosion and got away with it. What you need is a Browns Gas generator. This produces HH02, which is implosive, much safer. I've got a good idea on how they get the extra oxygen atom in there, but not enough info to share it.
www.brownsgas.com is a very informative site.
www.browngas.com is the Korean company who produces the real deal.
www.bgaquapower.com are the UK based EU agents.
www.waterflame.co.th also produce decent gear, but I'm not sure if it's real Browns Gas as they use an electrolyte and don't quote it as Browns Gas.
www.waterflame.co.uk are the UK agents.
For a nifty Tesla turbine go to
www.gyroscope.com. They do a nice solar powered Sterling cycle engine as well.
Hope this helps.