Turbo Big Red 250 Project

[factoryX]

well you suck, you post all this crap to only sell and expect the new owner to post a video or something, lame thread...

[SYKO]

well you suck, you post all this crap to only sell and expect the new owner to post a video or something, lame thread...

COSIGNED

[Russell 350X]

Did it actually give it a boost in power? I'm surpirsed it could even spool it very well. Whats the turbo off of?

[3some]

Thats an extremly large turbo for a 250cc engine. That is like the siz of a garret t-25 and that big enough for a 2000cc car engine. Whats the inducer wheel size?. How is the waste gate operated? Is it internal or external gate?.

[vector292]

hmmmm.....


http://moncton.kijiji.ca/c-cars-vehi...AdIdZ130314716

haha monctons were i live.

[redneck250es]

haha monctons were i live.

want a cookie?

[big yeller]

well this tread did give me a ideal i never thought of though. im really in to diesel performance...know quiet a bit about turbos. now the question is where i could find a turbo that has a turbo with with a flippin small enough exhaust housing and compressor wheel for a 200 cc engine and how much fuel it will require with the added air what size of a jet. how to oil it...seperate tank with a electric oil pump??? how much air can you put to it till it pops a headgasket. would i have to lower the compression ratio. possibly a intercooler off of a volkswagen bug tdi also. has any one done this and made it work??? that shure would be cool a three wheeler with a turbo.

[factoryX]

there was a couple,I found this one on youtube: lt230 with a turbo running 17 pounds of boost and methanol : http://www.youtube.com/watch?v=GZuHjr2vQa8

http://www.youtube.com/watch?v=IwlBdbUftGY&NR=1

[sorefirst5]

would love to see more of this project in details? kinda feel like we are just being teased

[Grizzlypeg]

This project looks bogus. That turbo so far from the intake makes no sense. If the turbo draws through the carburetor, it would never idle having to draw through all that contraption before it reaches the cylinder. Alternatively, if the turbo blows through the carburetor, he would need a pressurized carb, presurized fuel system, and a fuel pressure regulator that matches carb need fuel pressure to added match boost. I see no indication of such sophistication. I used to have a turbo 650 bike and I can tell you its no simplicity to just turbo a gravity flow carb engine. It needs pressurized fuel even with a carb to flow against boost pressure instead of venturi vaccum. He probably just has a turbo charger hooked up to his exhaust outlet. If it simply blows into the airbox or carb the mixture will go lean and fuel delivery will stop the moment it develops boost. Fuel can't flow downhill against pressure and still meter properly or flow at all.

Edit: Looking at the pictures in his album, it appears to be a blow through system. If you pressurize the airbox inlet to the carb, the second you have any boost, fuel will stop flowing into the venturi. The more you give it boost, the leaner the mixture will get, and the second there is any boost of consequence, fuel flow will stop altogether. You got to remember the fuel has to flow downhill from the gravity feed of the fuel tank, and that flow is easily disturbed by the least pressure, secondly if its still vented to the atmosphere, the fuel in the float bowl that is at atmospheric pressure due to the vent, can't be drawn into the venturi against boost. He'd need a closed system operating at boost, and a pressured fuel system that varies pressure with boost to maintain continuous fuel mixture. Either that or a high pressure fuel injection system that compensates for boost. Anyone see that level of sophistication in this project?