Ok, here are some more details:
1) The engine tested was a Nissan RD28, 3000cc, 6 cil in line, naturally aspirated, 18 valves. Made in Japan in 1996. This was about 6 years ago. The engine is still working in very good condition, was perfect then. You can see it here:
https://sites.google.com/site/rd28engineswap/
2) From what I recall, the current draw from the car was about 20 A, but variated up as the wáter warmed up, reaching 25 A aproximately.
3) Gas production was so high that pushed wáter down, diminishing the production surface covered with wáter. To solve this and use all surface in production, I added a small 12V electric pump which blew the gas to the bubler. This solved the problem.
I am attaching a couple of pictures of my HHO generator.
It is made of very heavy and non corrosive Steel, which is very hard to make holes on it. I broke many perforing elements to make the holes. I couldn't cut Steel, so make them cut it with special machinery.
Even so, as I said in previous email, car didn´t benefit from the gas, which I injected at the air income of the engine, after the air filter.
Oldbeaver