Check this site out!

http://ultimateaircooled.com/ 

That is a nice engine on the front page.

Cool site Dave. Keep an eye on this one he?

they the same as your twin chargers Dave?

i will be happy to put this one straight to the top of my favourites,well close anyway.
cool site,
dave were do you find the time.

No day job helps.

Brian Watts who founded the site gave me the inside tip,
so was happy to share the site.
It has a fresh new outlook.

Blowers appear to be of the same brand as mine were 3150-2.3 Autorotors from Sweden.

A friend of mine uses those same huffers on their 8 litre engines in 10 tonne loaders...

And they only use one pump per engine!!!