Paul Conner wrote:

Hi, Paul....I made it to Sun-N-Fun this year, and was delighted to see

you

in action firing up the turbo rotary.  While touring Choppertown, I came
upon a 13B with an interesting manifold/throttlebody combination. I

could

see that the manifold was made by Atkins....I am not, however familiar

with

the rest of the components. The throttle body seemed neat and compact,

with

the injectors closely mounted in what appeared to me as a neat

lightweight

package. Here is a photo of the system. I would appreciate your comments

as

to the pros/cons of such a system, and any other info you might have
concerning the source of the other components.  Thanks in advance for

your

reply. Paul Conner, Mobile, AL

It is a bit short for 6000 RPM max. Might work well at 8500 RPM.
the rest of the parts are TWM. The injectors, being only two, must
be REAL high flow. Most Mazda's use four injectors and they are staged.
Two are used at low power and all four at high power.

Paul Lamar

I agree with Paul's assessment.  Some of the TWM throttle bodies have
mounting points for 4 injectors if you are stuck on this hardware.  I would
recommend going with 4 injectors for cost & reliability reasons.  If the TWM
you get only has 2 injector ports, use the two primary injectors in the 13B
center housing in addition to the TWM two.

Tracy Crook
tcrook@rotaryaviation.com
www.rotaryaviation.com

 
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