Coolest racing engine of all time???

**Tim Chance** · 11-06-2006

Originally Posted by Mark75H

I looked up "oil of merbane" all the results say it is nitrobenzene, very toxic stuff but a very potent power increaser. Nitropropane is a another oxidizer/power increaser (not as toxic as nitrobenzene, but almost nothing is), isopropanol is rubbing alcohol, which was probably included to keep all the weird ingredients mixed together

I remember guys running nitrobenzene, their exhaust smelled like shoe polish.

**Dancingbear1961** · 12-22-2006

Originally Posted by corin_huke

Have any of you guys (and girls) photos of the Yamato 500cc engines that were used by Neil LaRose and others in the pro class back in the 1990s?

The racing engines (as opposed to the stock 80s, 102s, 302s) never took off here in Europe, so for many of us they remain a mystery.

It will be interesting to see how the Yamato 500cc engine compares to the Rossi and VRPs engines of today, as a lot of the design features, 4 exhausts, reed valves, etc, I'm sure can trace their origins back to the Yamato

Any information you can provide for this (and the other Yamato racing engines) would be much appreciated

BTW does anyone race the Yamato engines in the pro class these days?

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This is Howard Anderson's and yes it still can be seen racing at the nationals.

**sheuninck** · 12-29-2006

Atatched is a cool mod 50 moter

**Mark75H** · 12-29-2006

Someone else has nominated the Merc 25xs:

**Thomas** · 01-23-2007

Outboard museum Berlin GER.

Photo Jarno Pirhonen.

**Fast Fred** · 01-23-2007

heard about one like that, is it supercharged?, dose it have a tractor drive,(pusher and a puller prop)

**corin_huke** · 01-23-2007

Moi Thomas!

Mitä kuulu?

Where in Berlin is the Outboard Museum?

D

**lilabner** · 01-23-2007

European Corvair...

American version below..

**Mark75H** · 01-23-2007

Originally Posted by Fast Fred

heard about one like that, is it supercharged?, dose it have a tractor drive,(pusher and a puller prop)

Push and pull is "tandem" ... "tractor" means puller prop on front only

Yes, it is supercharged. More about the Soriano at: http://www.soriano-outboard.com/4436/index.html