4 cylinders pressurized alpha engine

[Chris_74_fr]

Hello,

Here is my last production :
4 cylinders
pressurized with air at 5 bars
water cooled (but it is not finished, the fan and the intercooler are not made yet)

[youtube]http://www.youtube.com/watch?v=fGRz9ujCtWc[/youtube]

[Ian S C]

chris_74_fr, good looking engine, It will go even better with a burner of its own so that the cylinders get heated evenly instead of just pointing the torch and hopeing.
Is the bit on top of the cold cylinders a water pump? Ian S C