turbo charged honda

[POS 250sx]

http://www.youtube.com/watch?v=Kv9kdIv4rQw&feature=related

wow what an idiot, that turbo is so huge i bet it isnt even hitting 3psi. Nice idea but i bet you cant even find a turbo small enough for a 250cc engine, let alone make it work correctly.

[cr480r]

Yeah that thing is a joke, But I bet it was fun to tinker with... It would be sweet if the thing spooled up..

[Hoosier_Daddy]

Looks slow doesn't it? Maybe the weight of the turbo countered any little bit of boost it created?

[Gag_Halfront]

I'm actually thinking that a turbo would rock behind the expansion chamber of a two stroke. :D Granted, you'd have to have an awful small turbo, but you could pack more mix into the motor in the same power band and probably produce a fair shake more power. It might only really work on the 500s due to the size of the turbo, but there's a chance you could find something small enough. I've seen video of a turbo Hyabusa and that thing was seriously sick.

[brapp]

hey gag its already been done but verry hard to tune i had the best luck with the fuel injection system from rpm to get it to run at least remotly decent.

[brapp]

http://w1.bikepics.com/pics/2005/04/28/bikepics-342705-800.jpg


http://w1.bikepics.com/pics/2005/04/28/bikepics-342703-800.jpg

[Erics350x]

Trying to keep the crank seals intact would be a task in its self

[fabiodriven]

That is quite possibly the worst video I have ever seen and I now feel dumber for having watched it... Good thread, though!

[brapp]

the crank seal issue was solved by cuttign a snap rign grove in the banshee cases to help hold the pressurized crankcases. and i think we were abel to sucessfully run up to 14 or so lbs of boost and be semi reliable.

[Hoosier_Daddy]

Did the turbo make much of a difference on the 2 stroke though? It seems like having a turbo would defeat the purpose of the expansion chamber. Since the expansion chamber already stuffs the gases back into the cylinder if it is done properly, what kind of advantage would the turbo add? That is why it was so hard to tune I guess but didn't you have to basically tune the turbo 'out of it" so to speak to get it to work properly?

[bad350]

my question is why turbo a 200 big red? thats like dropping a big block into a pinto

[ATC-Eric]

That guys a member here on the boards. I respect him for his effort. He got board, did some research, and decided to take a chance. I think its cool.

And I would LOVE to drive a Pinto with a big block! I dare you to find anyone ELSE who wouldnt!

[Gag_Halfront]

The purpose of the expansion chamber is to optimize the _flow_ of gasses through the engine at a specific RPM. It has nothing to do with the _volume_ of gasses. Once the exhaust gets past the expansion chamber it is just like any other exhaust. Catching it to spin a turbo, and using that to get a bigger BANG each revolution still works like it would in a 4 stroke. I'll agree that the bigger bang would try to spin the motor faster and thus get it off the pipe quicker at the top of the power band, but some gears would take care of that. In other words, you could tweak your gearing a tooth or two and gain a crapload more speed at the same RPM because the bike would have enough huff to turn the bigger gears.

You'd probably have to drive it like a ricer though and make sure you had the turbo spooled before you dumped the clutch or else it would bog from the taller gears.

[The Goat]

wait, i've seen turboed banshees before....I saw one putting down over 100 hp at the wheels back in the mid 90s or so.

[factoryX]

here is a turbo vespa putting out 42hp to the rear wheel.

http://uk.youtube.com/watch?v=GGXcM9evUpo


turbo banshee

http://uk.youtube.com/watch?v=zbwuT6OuAdo&feature=related

here is another(I think)

http://www.metacafe.com/watch/326086/banshee_turbo/

here is a helmet cam turbo banshee.

http://vids.myspace.com/index.cfm?fuseaction=vids.individual&VideoID=7592731

[oscarmayer]

they make turbos small emough to run on a 200cc motor. it's about the size of your fist. that would be a fun little turbo. run about 5-6psi and you'd get like 30-35hp out of the 200c motor.

[POS 250sx]

Turbos are so much better on diesels. I wanna see an SX with a small diesel running 35psi of boost and 4500rpms. And some monster tires to raise the gear ratio! itd be the ultimate mudding trike!