Ok, before I dive into the meat of it, I just want to give thanks to anyone that helps.

Now to the meat of it. I'm doing a high school project with a few other guys in our tech class. We're basically building a hopped up off road go cart wannabe sand rail. Now the reason I'm here is because we want to try and run a weird turbo/super setup. The motor it will be on is a junkyard vw find that we are rebuilding, but not doing any major upgrades. The turbo in question is a hoslet off my dad's of dodge.

Now our plan is to use the cold side of the turbo attached to an electric motor. Before everyone says its stupid and wont work please hear me out. I know that the turbo has to spin at like 100k rpm and at best the electric motor could make it spin at 5000 rpm. That's part of the issue, spinning that slow can we get any boost. We just want a few psi, maybe a pound or two. We want to run it normally aspirated most of the time. This is the weird part, between the air filter and throttle body we planned on having an angled T that connected to the turbo and another air filter. Our theory is that we would be able to turn the charger on whenever we felt like it.

Does anyone think that this could reasonably work? If so would the turbo work or would it be too large? Once again thanks for any help you can give us.

 

i think what your saying is more work than just fabbing up a real turbo kit,if your building it in school im sure you have all the tools you could ever want,as for the electric motor thing i dont think thats going to work to well,why not just buy a leaf blower and wire it up on there? lol

 

Ditto, I think you'd be WAY better off to put together a properly sized normal turbo system. You can get Chinese turbos in that size range for as little as $150. I've got a similar pair on my 355 and they are working well.

 

It seems like it will only turn into a restriction the electric motor will only move so much air while the turbo will demand a lot more .

 

No it will not work.

 

It's not impossible, but you're up against more than you think. I'm going to assume your old man's Dodge was Cummins powered. The following is a compressor map for a turbo similar to yours:



As you can see, the map doesn't even start until 62,000rpm. You'll need to gear it up to spin that.

Also, as a general rule it takes about 1hp to move 10lb/min of air. So if you want to make 100hp, you'll need a 10hp electric motor.

 

What kinda vw engine? My personal opinion is find a turbo off a 4banger from the mid 80s to mid 90s depending on the power you are looking for then hit the welder or the torch and get some exhaust pipe together for any that is stockish you would probably be better off smaller and they typicaly arent an expensive turbo.

 

You are effectively doing this:

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I remember when people were trying to fit leaf blowers under their hoods to get a couple pounds of boost. It didn't work very well.

 

No, this won't work. Even if the electric motor would make some boost, your two air filter idea won't even begin to work. All of your boost would be lost through the second air filter.