Paul,
Mazda has announced that will producing a hydrogen based renesis
engine/vehicle soon.
Presently I am researching this in-depth.
With your massive knowledge base, could you make some suggestion on:

1) Fuel injector size, type? Because of Hydrogen's lower density mazda
is using direct dual injection in the intake chamber.  I read some where
on using deseal injectors?

2.) As a starting point I am considering a direct injection maybe a
pineapple racing ported 13b?

Any suggestion whatsoever on material to read, people to contact, or
website to read would be greatly appreciated!

Thank you!!!
John Fair

Mazda have been producing hydrogen rotary powered RX8s and other vehicles since 1992.
 Power is down to 2/3rds and range is very limited
due to the huge tank volumes required to store hydrogen. Certain Japanese
government agency's are using them. Hydrogen makes some sense in Japan where
most electricity is generated by nuclear reactors. It takes more electrical
energy to make hydrogen than you get back by burning it. In the U.S. most
electricity is generated by burning coal. Not a good thing. The same
principle applies to electric cars and trains. Hydrogen has been called
"one of the least efficient, most expensive ways" to power cars. Generally
it is probably more efficient and better to convert the coal to gasoline or diesel
fuel and use that to power the cars airplanes and trucks. There is no beating
gasoline for energy stored per pound or per gallon.

Paul Lamar