When watching drag racing I wanted to know what these are called. The ony word that comes to mind is an inducer.

They sometimes stick out of the front bumper/ headlight.

It is like a funnel. It starts out around 8" in diameter adn tappers down into the turbo compressor inlet.

What is the name, and what do they do?

It seems they make the turbo louder, since the turbo sound is more promiment when these are visible.

 

its to increase flow into the turbo

 

velocity stack or air horn for higher velocity of air flow. ity helps direct the air to the turbo instead of the turbo sucking in air around itself. just like open throttle body vs. cold air intake

 

+1


they are not suitable for street cars as a small rock can kill the turbo or worse the engine.

 

at first glance i thought he was talking about the anti surge device designed into the compressor housing but then I realized what he was talking about was an add on to the turbo itself

 

ya you're right, although i've seen some people's lame excuse for an air filer to get around this problem.. metal mesh.. or attempt i should say

 

well I was looking into one of these for my soon to be new HKS turbo.

Thing Is I was going to get some flat foam filter and sandwich it between some wire mesh.

Or cut my K&N filter and flatten it out.

IS the HP gain worth it??


BTW I would never use mesh only, I would def use a filter of some sort

 

All stupid ideas...

Pleated filter elements are superior, cause of all the cross sectional surface area.
The pleats is a good design to get more surface area in a very compact space.

Just as wrapping a piece of screen over the mouth of the turbo inlet, you just "magnefied" the mesh (wire) cause it's flat.

Put a proper filter on the turbo if you're going to street it, period.


-Ted

 

fair enough.

What about a GIANT conical filter to fit on the front of the velocity stack

 

larger filter should be better

im building a new airbox and am building around a large readly availble filter i can get though work

its an air filter for an 89 dodge 1tone. the filter measuers aprox 18-20" long and probly 10" wide (cylinder)

 

It's called a "bellmouth inlet", which is a subsonic duct that displays a vena contracta effect that eliminates contraction.

http://www.ec.erau.edu/cce/centers/e...entation.htm#b

http://www.velocity-of-sound.com/vel...bellmouths.htm

See #9
http://www.knfilters.com/faq.htm

 

I wasn't under the impression that it would allow the engine to breath more, i was just thinking pulling x air though larger surface area would draw less of a pressure loss, and lengthen the service left. so i was half right

interesting read if you read all the links posted

-Jacob