Nope, with a 2-cycle engine, the faster you run the blower, the more air you push through the engine - the key word being through. To supercharge a 2-cycle engine, you have to keep the air you push in on the inlet side from escaping on the exhaust side. That's what a turbocharger does - in addition to compressing more air and discharging it into the blower inlet, the turbine side of the turbo creates back pressure (turbo drive pressure) on the exhaust side to keep the charge air from escaping so easily. With the turbocharger, the engine is indeed supercharged since, when the turbo is spooled up, the charge air is pressurized above atmospheric pressure at the beginning of the compression stroke.

Rusty

 

yup a 2 stroke with only a blower on it is considered Naturally Aspirated. Have you ever tryed to start a 2 stroke with a broken blower driveshaft? It will not start. It'll run without the blower.....BARELY. but they won't start.

and theres a bypass on the blower when the turbo hits a preset psi it bypasses the blower and blows straight into the airbox. ..........you can see it in the picture of the 8v-92 I posted. about the size of a 35mm film canister, on the front edge of the blower right in front of the turbo elbow.

 

Information Assimilated, thanks for straightening me out.

 

tee hee hee

 

nice 4-53T its set pretty far back though

 

SWEEEEEEEEET!

 

Man, that thing looks loud.

 

god I would love to cruise that thing around!!!!!

 

I'd want a set of ear plugs before going anywhere in that thing.

 

Y'all do know that Detroit Diesel is now a Diamler Chrysler company don't you? (he he he)
I saw on TV that they have an overhead cam 6. Looked sweet.

 

'Zactly, that why the Series 4000 Detroits I work on have MTU cast all over them

 

MTU Friedrichshafen GmbH, say that three times fast! (or even one time slow)

 

Its more like 4 days of use and 53 quarts leaked out.

thats all detroits do is leak oil.You cant keep a seal in them for nothing cause it blows em out everytime.Leaks,leaks,and leaks oil.

but oh yes they are bulletproof and last forever.They sound great when you have them rapped up high in rpms with straight exhaust.Extremly loud and annoying.You can wake up the neighbors a country mile.

They use detroits alot in water well motors and irrigation systems.They are easy to work on since theres not a whole lot to em.Good luck

 

THat's because the crankcase is under pressure from the blower... I MEAN "scavenge" pump!

 

there shouldn't be any real pressure in the crankcase [no more than any other diesel engine]. the oil control rings seal off the air box from the crankcase, and what does get by, is vented out the breather on the valve cover.
on emd diesel engines [overgrown ddc's] the engines shut down when they get a pressurized crankcase if equipped with the necessary control devices in series with the governor.

http://auto.howstuffworks.com/diesel-two-stroke1.htm

the detroit diesels just have too many gaskets on the engine, too many places for oil to leak from and poor gasket materals