Well about the money, I am willing to spent a lot if it can be done. I am allied with a auto mechanic in this project, and if it is necessary to change the camshafts he can do that.
We was thinking of using an older car with 1.3 to 1.6L motor.... No turbo... These engine's runs about 3000rpm going about 100km/hour.
To start I am interested in making a electrozyzer that can make enough hydrogen to run this motor size.
In Denmark small cars goes from 1-1,5L medium: 1,6-1,9L large:2,0-and over.
If you have a car with "large" motor size you also pay taxes because of the greater pollution

If I can make an electrolyzer that can produce enough hydrogen, then we will find the right car with this motorsize and modify to fit the system.
I was thinking of the highvoltage type described in this file on page 10
But I am not sure! I am working as electronic engineer, so the electronic part will not cause so many problems...
My problem is that I think many of the people in the forums around are theorist... I mean they have not tried to make a big electrolyzer for real.
I also see that some make reactors and others make electrolyzers, and the reactors make most hydrogen... I kont know exact what the difference is!
I really hope you can help me making enough hydrogen !
Tue