NoPistons -Mazda Rx7 & Rx8 Rotary Forum - oval track rotary application

I'm not aware of any mechanical injector kits for the rotary engine, but it's possible to set it up.

Take hilborn for example. The single throat application. Appears to be IDA mounted.

http://www.hilborninjection.com/product.as...45&CatId=36

That's 1 and 11/16 " bore, which is around 42 mm. Good sizing for a single rotor, so you could get two of these, and perhaps check out this website for an IDA manifold to bolt to whichever block you want to go with.

http://www.tweakit.net/shop/index.php?cPat...230d1262e7d8b57

They have an array of IDA manifolds (dual mount) for the 13B. That's pretty much a bolt on kit without doing much research. Better yet, two of those 42mm bore mechanical kits would work pretty slick on a peripheral ported 13B. The hardest part would be syncronizing the throttle plates, since it doesn't appear they sell them with a single throttle linkage for two throats. Still, not too difficult to fabricate. As far as the fuel pump goes, the mechanical units they sell appear to be pretty easy to work with. You wouldn't have a problem mounting it to the front cover / front iron mounts where the A/C compressor typically gets mounted. Even when not equipped, the 13B has a big "blank spot" on the driver's side for the A/C and power steering, where racers have been seen mounting their alternators for real estate to fit big intake manifolds or I/C piping. Even if it didn't fit properly on the drivers side, you could relocate the alternator in that spot (proven to fit), and mount the fuel pump where the alternator is typically, and run nice short lines right to the mechanical injectors. Although expensive, it's still possible for roughly half the cost of the same type of setup for a 4 cylinder engine.

Forgive any errors in my input, I've worked with a ton of diesel mechanical injection systems, and only one alcohol mechanical injection system on a drag car. The gasoline injection systems might have a few slight differences, but anyways there's something to think about.

I'd estimate the shortblock 13B (block with no manifolds) ~150lbs - ish. It's a pretty small package with alot of punch. There is dry sump kits out there for the 13B, can't remember exactly what website it's on. Might be on tweakit.net as well.

For more links, checkout the general rotary information thread in the FAQ section, it's got a ton of external links to parts manufacturers for the wacky/wild stuff that you don't see everywhere (helps you understand what is easily accomplishable).