86Rx7GXL

Some of you all might have seen this but check it out


http://cgi.ebay.com/ebaymotors/ws/eB...me=rvi%3A1%3A1

YearsOfDecay

interesting

RETed

This has come up before (in another forum section).
I don't like it, because you do not get even airflow distribution to all the 4 runners.  This design will load the rear rotor more than the front rotor.


-Ted

NCGNETO90

iTrader: (3)

That is wierd lookin.

NZConvertible

That problem would probably be fixed or minimised if the plenum was bigger. Plenum volume should be roughly twice the engine's capacity, so for a 13B (which breathes similar a 2.5L piston engine) it should be ~5L. That looks far smaller.

You'd also need to be making a lot more than stock power to see significant gains over the stock manifold.

89rx7gtu

weird, but also intersting.

SnowmanSteiner

Isn't it better to have a curved manifold over a straight one, so that the air spreads evenly through the port? I'm not a fan of this design either.

- Steiner

mazdaverx713b

iTrader: (91)

a sweet looking setup..... i wonder....

NZConvertible

I don't know why you guys think that look wierd. It's a just log manifold similar to the stock intake manifolds on hundreds of different cars.

Curved or straight means very little. The reason manufacturers use curved runners is so they can be longer and still fit under the bonnet. Long runners improve low-rpm performance.