The USA - NOA class D - 644cc Twin Block coupled engine platform and engine coupler transmission is pictured. Sorry that it is very dark as well, better pictures will be done in the spring of 2010. The Anzani mounting plate engine adaptors are clearly visible putting both Anzani engine blocks over t...

"Ramshorn" twin tube exhaust engineering. They kind of look like the name. The prototype exhausts leading to the trying of expansion chamber exhausts were done with exhaust gas directional mechanical switching via cable hookup for the driver to actuate from a throttleside kneeling position next to a...

ALL ABOUT DUAL EXHAUSTS PER CYLINDER ON ANZANI RACING OUTBOARDS: The other things I was sent was a "Rams Horn" dual exhaust system for Anzani WHERE Ron Anderson from Region 10 (west coast) USA developed to use. They used megaphones to start off and then the driver would mechanically switch a gate wo...

Jim Hallum sent me the Anzani twin block D engineering platform that they used identical dual Anzani 322cc 2 carb engines on it with both blocks tuned sideways and blocks-cylinders swung 180 degrees and over the transom inside the raceboat to deal with overhang weight with the exhausts in effect mak...

The venerable Quincy Flathead 6 cylinder loop engine. These Quincy Welding engines came in a 15, 20, 30, 44, 60, 66 and 99 inch bores in 2, 3 and 6 cylinder engine versions for various classes. The Quincy Flathead 6 cylinder looper engine being prepared here with its raceboat in 2008 for 2009 runs w...

I find them from a whole lot of places including various websites and my own photo books as well as contributions from a whole host of enthusiasts that want history entered and maintained anywhere possible. Its alsmost like creating a virtual museum for all to see. I have so many people to thank and...

From the ones I looked at in the 1960s and they were not plentiful the rotary valve was part of the crankshaft that rotated in what looked like would have been a type of crankcase block that surrounded the crankshaft not that dissimilar to the Hot Rod crankshaft. The crankshaft itself has wedge type...

Featuring a cluster of Mercury Modified Racing 4 and 6 cylinder engines courtesy of Charlie Williams at http://www.outboardracing.com . Can one imagine the racket all these running at once would case with both 60 and 90 degree firing orders all running at once on open pipes! Enjoy the picture.

Another view of the same Mercury 4 cylinder Modified Outboard for hydro and runabout racing. Enjoy the picture.

The smaller Mercury 44 cubic inch engines were not to be counted out either. In the USA and Canada these engines with the same basic block casting from 30 to 40 and 44 cubic inch for class C,D,E and FE Modified are very much part of the North American racing scene in both hydro and runabout classes ...