Electric Supercharger

I was reading the Nitros thread from last week. I wish I had more money and time to play with things like this.

I was looking at airbox mods and their benefit. Do you Tweakers think a stock SV would take this as a shoehorn?



Here is the Ebay info (they are car electric superchargers): http://cgi.ebay.co.uk/Electric-Super...QQcmdZViewItem

It would need to be the pointy with FI to work (well?) I'd imagine, don't think the curvy carbs are suited to forced induction, unless anyone knows better!

[northwind]

If it's a constant blow, I reckon it could be made to work with carbs... But they've not got a very good rep for car use.

I thought a carb needs to be upstream of a turbo/supercharger. I'm sure I remember seeing old dragsters, etc. set up like that. The carb relies on a depression to draw mixture up out of the spray tube. It might not work too well if the pressure through the choke isn't what's expected - like possibly greater than atmospheric pressure? Normally, the pressure through the choke will be less than atmospheric pressure.

Depends on the design of the system, most turbos pressurise the air before supplying it to the carb or fuel injection system. IThe carb must be designed for operation under these pressurised conditions, for example on old Lotus Esprits etc.

However it is possible for a turbo (or supercharge) to compress an air fuel mixture, although this is a lot lees common.

At the end of the day it's about getting a higher pressure differential between the fuel/air supply and the space provided in the cylinder during the induction stroke. Given fixed valve size/geometry and timing the higher the delta P (difference in pressure) the greater the flow, and therefore more power.

There are a couple of problems to overcome before it could be fitted to an SV:
- it draws 30Amps!
- The SV doesn't have a Mass Airflow or Manifold Absolute Pressure sensor like cars do, so you would need to buy a separate boost computer to handle the different fuelling required when the unit is off or on boost. Getting it to cut in smoothly could be a real headache too.

[northwind]

Originally Posted by sdusk

There are a couple of problems to overcome before it could be fitted to an SV:
- it draws 30Amps!
- The SV doesn't have a Mass Airflow or Manifold Absolute Pressure sensor like cars do, so you would need to buy a separate boost computer to handle the different fuelling required when the unit is off or on boost. Getting it to cut in smoothly could be a real headache too.

Rig it to constant boost mapped against revs, then jet accordingly. You'd need to relocate the breathers in the carbs as they vent into the airbox, the slides wouldn't work with a pressurised box (which I reckon would be the sensible way to do it). And there's probably 10 million reasons it wouldn't work that I can't think of

Thing is, there's absolutely no point- you can take an SV to the point that the bottom end becomes unreliable with NA, why blow it?

Don't start me off with this Electric supercharger stuff....

Or them "performance resistors" etc....

[northwind]

Now, be nice- there's no reason in principle that an electric charger can't work. It's just that in practice, they're all ****.

Cannot put in front of carbs unless they are designed for the pressure (they are not) or you use a pressure box. Fuel will go everywhere.
Mass air sensor, as previously noted, needed for FI.