Ron, when I say waterjacketed I mean bearing center section. I didn't mean exhaust That has to be retrofitted as I'm sure many are available for boats. Powerboats are ideal for turbos because you have an unlimited supply of cool water for your water-to-air intercooler. This means you could produce even more power with lower grade fuels than you could in a car.

Roby[/QUOTE]


My point exactly. One off water jacketed exhaust housings will be expensive. Add several thousand per engine for the custom ehaust and turbo housing. The question was why isnt anyone doing it. This is one reason I see.

Someone made a system in the past. Is anyone making anything now?

Ron

I woudl love to have 2 of these int he back of my Nor-Tech.

http://www.fast-autos.net/lingenfelter/427tt15.html

Lingenfelter could probably marineize it. I know he made some 502ci marine engines.

I just don't see why a wet exhaust system would be such a big deal. You could pump the water through the manifolds just like you have. Then pipe the water from there to the exhaust after the turbine housing. You can't pump water through the turbine but you don't need to. Just insulate it or use a heat-shield

Roby

That is not your typical BBC. That is a new generation small block that shares nothing with the big block chevy.

Roby

Huh? You mean water cooled bearings right? Watercooled bearings are not coast guard approved. The entire turbo must be jacketed or wrapped with a blanket. The biggest problem with APBA is proably the exhaust cooling problem as it relatest to Coast Guard approval.

This man was pioneering Turbo's in Offshore until the sport took his life. Rest In Piece Tom Gentry.

Roby,
Turbos have an advantage in emissions over superchargers. Emissions are measured compared to crankshaft horsepower output and on superchargers you are creating extra horsepower that isn't measured so the effective emissions output measured is higher. Turbos don't have that problem, but there could be other items as you mentioned that come into play. An issue that does come into play in marine applications balancing the torque curve. You can make great hp with turbos and you can tune them for more bottom end torque, but it's easier with superchargers to balance the two. I think turbos will have a future in marine performance in the future, but it's going to take some resources and development time.

Please don't blast me on this, I am ignorant on the subject . What is the difference between a blower/supercharger, and a turbo?

basically...... superchargers are crank driven, turbo is exhaust driven....

Thank you for the simple explaination. So turbo's make more power because they are not slaving off of the engine? I didn't realize that gasoline and diesel turbo's worked on the same principle