Marc Wiese wrote:

Subject: (rx7) [3] Other side feed fuel injectors

As other people have pointed out before, FD's seem to require the
largest possible fuel injectors ever made, and then some.  In
particular, the third gen uses side feed (also called "galley feed" and
"bottom feed") injectors which do not appear to be available in the
super-jugumbo sizes necessary for crazy-HP mods.  This leads people to
try one of two different approaches to upgrade the injectors: a) use a
new fuel rail and top feed injectors or b) take a stock injector and
bore it out.  As I understand it, each approach has it's drawbacks: a)
requires removal of the ACV and other fuel plumbing tricks, and b)
produces less reliable, perhaps lower-quality spray, injectors.

In a casual web search, I have found that GM's parts arm Delphi makes
some side feed (they call them "botom feed") injectors for methanol
powered race engines.  Since methanol has a lower specific energy than
gasoline, you must inject a much higher volume of fuel in an alcohol
engine, possibly even as high as a modded FD requires.  They also appear
to be designed for faster response and atomization without the diffuser
plates FD's use.

So, finally, here is my question to anyone still reading: does anyone
know anything about Delphi Multec bottom feed methanol electronic fuel
injectors? Information like flow, cost, availability, and physical size?
This is all I know about them:
http://www.delphi.com/pdf/racing/multecbottomfeed_meth.pdf
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Marc Wiese

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